Duangdao Aht-ong

• Chulalongkorn University

Bacterial nanocellulose (BNC) is a natural polymer gel with unique properties that are suitable for developing advanced film applications such as edible coating and packaging. However, transforming BNC gel into a suspension and applying it as a film still lacks knowledge of the condition and method since BNC film performance depends on many paramet...

Food spoilage, which often leads to food waste, occurs throughout the entire food supply chain, from the upstream to downstream stages of food production. Biobased hydrogels made from cellulose nanofiber (CNF) have emerged as potential materials for extending food shelf-life. Despite this potential, the impact of defibrillation time during the prod...

Extracting microplastics from natural sources is challenging, especially microplastics with sizes smaller than 100 μm. The flotation method is the most common microplastic extraction, but it struggles with fine particles due to the difficulty in collecting floating plastic particles from the liquid during the separation process. This study proposes...

The aim of this study was to utilize cassava pulp to prepare biocomposites comprising microcrystalline cellulose from cassava pulp (CP-MCC) as a filler and polyhydroxybutyrate (PHB) synthesized in-house by Cupriavidus necator strain A-04. The CP-MCC was extracted from fresh cassava pulp. Next, the CP-MCC surface was modified with butyryl chloride (...

Pineapple leaf fibres are an abundant agricultural waste product that contains 26.9% cellulose. The objective of this study was to prepare fully degradable green biocomposites made of polyhydroxybutyrate (PHB) and microcrystalline cellulose from pineapple leaf fibres (PALF-MCC). To improve compatibility with PHB, the PALF-MCC was surface modified u...

Bamboo leaves are a resource of cellulose fibers that can be further developed into value-added products. In this research, cellulose nanofibers were obtained from Tinwa bamboo leaves, and then chemically modified with (i) hexadecyltrimethoxysilane (HDTMS) and (ii) perfluorooctyltriethoxysilane (POTS). The modified nanofibers were then used as a hy...

In this work, activated materials were successfully prepared by pyrolyzing various ratios of Nipa palm husk powder to potassium hydroxide (1:1, 1:2, and 1:3) at predetermined temperatures (500℃, 600℃, and 700℃). The surface area was obtained from nitrogen isotherms using the Brunauer-Emmett-Teller (BET) equation. The surface area of the prepared ac...

Cassava pulp residue (CPR) is one of the most interesting renewable materials that is widely used as active precursors for many applications. Based on its characteristic, cellulose is a typical component locally found in CPR in which it plays an important role in various potential fileds such as reinforcing fillers, stabilizing agents, and dietary...

Nosocomial infection from hospital garment contamination is an important issue in health institutes. Functional textile containing antimicrobial agents is one potential solution to eliminate bacteria on textile surfaces. Despite their advantages there are concerns that antimicrobial agents have a detrimental impact on the environment, therefore in...

In recent years, there has been an increasing interest in finding alternative material to replace fossil-oil based product due to the environmental concern. Lignocellulosic biomass has emerged as the promising candidate due to its low-cost and sustainability. The objective of this work was to prepare cellulose nanofibers (CNFs) from empty palm frui...

This study was to investigate the influence of incorporating poly(lactic acid) (PLA) with different stereo-regularities into poly(butylene succinate-co-adipate) (PBSA)/poly(butylene succinate) (PBS). The PBSA/PBS matrix phase was fixed at 70/30 wt%, whereas the PLA contents were varied from 10 to 30 wt%. Two grades of PLAs with different D-lactide...

Bio-based polylactide (PLA) derived from fermented corn starch was blended with poly(butylene adipate-co-terephthalate) (PBAT) and triethyl citrate (TEC) plasticizer using a twin screw extruder. PLA-grafted-maleic anhydride (PLA-g-MA) synthesized via reactive maleation and toluene diisocyanate (TDI) were used as compatibilizers for these blends. Im...

In recent work, the antibacterial packaging film from biodegradable polymer was prepared. Poly(butylene succinate) (PBS) composite films containing three different antibacterial agents; silver zeolite A (AgZA), silver zeolite Y (AgZY) and silver zeolite ZSM-5 (AgZSM-5), at the concentration of 0.5-4 %wt were produced by solvent casting and melt ext...

Various fillers (commercial, nipa palm, sisal activated carbon, zeolite) were incorporated with regenerated cellulose matrix that dissolved using lithium chloride/N, N-dimethylacetamide solution. The biosorbent films were successfully prepared via solution casting and then characterized by Fourier transform infrared spectrometer (FTIR), X-ray Diffr...

In this work, Sacha inchi (Plukenetia volubilis L.) residues were used as biomass feedstocks in catalytic upgrading pyrolysis with SBA-15, which is a substance synthesized from coal fly ash (CFA), using alkali fusion, followed by hydrothermal treatment (SBA-15-FA). The catalytic activity of fly ash-derived SBA-15 was investigated through the fast p...

Sugarcane bagasse waste, consisting of approximately 40-50% cellulose, has been widely used in a number of industries. The extraction and defibrillation of nanometer-scale cellulose fibers from such waste using strong chemical solutions have been extensively investigated. However, the using of strong chemical solutions can cause adverse effects to...

In this work, we described an effective approach to prepare nanofibrillated cellulose (NFC) with cellulose II structure under mild condition. Firstly, the water hyacinth (WH) was subjected to a series of a two-step chemical treatment, NaOH/urea pretreatment, and mechanical defibrillation at different defibrillation times. After that, raw water hyac...

Moringa oleifera Lam. leaves is the popular plant which provides an impressive range of medicinal uses because of major phytoconstituents in leaves. Such phytoconstituents contents are highly affected by extraction conditions. Therefore, the effects of different solvent extraction, temperature and time of extraction on antibacterial activity and to...

This work was focused on the effects of filler concentration on the antibacterial activity and biodegradable behavior of poly (butylene succinate) (PBS) composite films containing silver exchanged zeolite ZSM-5 (SZSM-5). The composite films were prepared by chill roll cast film extrusion, by varying the silver zeolite content from 0.5 to 4 %wt. The...

Bacterial growth on food is a main factor in the reduction of food quality, leading to short-term food shelf life. Development of antibacterial packaging can inhibit the bacterial growth and extend food shelf life. Silver loaded zeolite was used as the antibacterial agent in this work. Three zeolites (different Si/Al ratio) such as zeolite A, zeoli...

The utilization from biomass feedstocks to fabricate the advanced nanomaterials has greatly attracted a great interest due to their low cost and sustainability. This work aimed to explore a simple way to prepare cellulose nanofibers using water-based approach via mechanical defibrillation. Cellulose fibers were first extracted from water hyacinth t...

Activated carbon/cellulose composite (ACC) biosorbent films were fabricated via solution casting by combining 1–3% w/v of activated carbon with the cellulose solution which dissolved by lithium chloride/N, N-dimethylacetamide. Both cellulose solution and activated carbon were prepared from sisal fiber. These films were characterized by scanning ele...

Food loss is a global concern nowadays. Fresh produce has the highest rate of loss among food products. In this study, nanocellulose suspensions were employed to coat on a perishable vegetable (spinach) for extending its shelf life during postharvest storage. Two mechanical defibrillation methods were studied to obtain a suitable preparation of nan...

Upgrading of pyrolysis vapors from fast pyrolysis of Sacha inchi shell biomass (SiS) over SBA-15 catalyst (5.81 nm pore diameter) were investigated. SiS had carbon of 41.08% with combustible compounds of 82.25%. Fast pyrolysis of SiS at 400-600°C using SBA-15 as catalyst were performed by Py-GC/MS. The effects of SiS particle size, pyrolysis temper...

Purpose In this work, the surface of Parawood sawdust (Hevea brasiliensis) microcrystalline cellulose (PW-MCC) used as reinforcing agent in polypropylene composites was modified with benzoyl chloride under mechanochemistry process. Design/methodology/approach The acetylated PW-MCC was produced from heterogeneous condition using planetary ball mi...

Surface treated parawood microcrystalline cellulose (PW-MCC) performed under mechanochemical reaction using planetary ball milling at ambient temperature was used as a reinforcing material in polypropylene composites. Initially, PW-MCC was prepared by acid hydrolysis of parawood sawdust pulp. After that, PW-MCC was treated with vinyltrimethoxysilan...

Polylactide (PLA) films blended with poly(butylene adipate-co-terephthalate) (PBAT) were hot melted using a twin screw extruder with the addition of triethyl citrate (TEC) as a plasticizer and toluene diisocyanate (TDI) as a compatibilizer. The synergistic effects of the two additives on the mechanical, thermal, and morphological properties of the...

This work focused on the effects of compatibility techniques [i.e., modification of filler and addition of an l‐lysine diisocyanate (LDI) coupling agent] and filler content on the properties of bio‐nanocomposite films prepared using poly(butylene succinate) (PBS) as a matrix and starch nanocrystals (SNC) as filler by chill‐roll cast film extrusion....

Poly(butylene succinate) (PBS) nanocomposites filled with nanoprecipitated calcium carbonate (NPCC) were prepared via melt blending. The hybrid materials were crystallized under isothermal and non-isothermal conditions in order to understand the influence of NPCC on the crystallization behavior of PBS matrix. For both of these conditions, the nucle...

Microcrystalline cellulose (MCC) from parawood sawdust (PWS) was successfully prepared by acid hydrolysis method. In this work, parawood sawdust waste was obtained from furniture factory. Initially, PWS was subjected to an alkali pulping and bleaching processes, respectively. After that, the microcrystalline cellulose was prepared from bleached pul...

The poly(butylene succinate) (PBS) is a biodegradable polymer widely employed in the industry and its microstructure is strongly determined by its crystallization. Consequently, this paper investigates the nonisothermal crystallization behavior of PBS nanocomposites filled with NaY zeolite. The samples were prepared by melt blending with the insert...

For fresh-cut and ready-to-eat packaging films, antifog additives (AFs) are commonly used to suppress the formation of water droplets on film surface. To date, the type and dosage of antifogging for PLA based film are less studied. Therefore, in this research, films incorporated with antifog additive were fabricated by cast extrusion technique. The...

Due to an insufficiency of fossil fuels and environmental pollution, sustainable and efficient material utilization has become the greatest importance. This work aimed to produce nanosized filler for biobased materials from renewable resource by an efficient production. Banana and tapioca starch nanocrystals (SNCs) were prepared from mild acid hydr...

In this research, poly(lactic acid) (PLA) blend with poly(butylene adipate-co-terephthalate) (PBAT) were selected to fabricate peelable lidding films. In general, blending PLA with PBAT results in hazy films; however, desirable low haze films (<10%) could be achieved in this study by designing proper blend composition and cast film process under op...

Fast Scanning Calorimetry (FSC) was employed to analyse the crystallization kinetics of Poly(butylene succinate) (PBS) graphene nanocomposites. The emphasis of the present study is made on the heterogeneous nucleation of the PBS crystals in the presence of graphene nanosheets. Graphene oxide nanosheets were first synthesized, then reduced and homog...

Nanocellulose is a natural polymer containing abundant hydroxyl groups which can create the network of hydrogen bonds between intra- and inter-molecular cellulose chains and also react with many other functional molecules. These interactions are helpful to film formation and surface modification. Silylation is a well-known modification, in which si...

Controllable morphology of polypyrrole wrapped graphene hydrogel composites in nano scale has been successfully developed via in-situ electrochemical co-deposition in an aqueous solution containing pyrrole monomers (Py), graphene hydrogel (GH) and surfactant. The presence of different surfactants (sodium dodecylbenzenesulfonate (SDBS) or poly (sodi...

A large and increasing amount of polymeric wastes, including plastic, rubber and tyres, are produced each year causing increasing disposal and environmental problems. The recycling of these wastes is an alternative way to solve the problem of polymeric waste management. Thermal/catalytic degradation of these wastes (pyrolysis) is of interest for li...

Nucleated polylactide (PLA) blend films with various types and contents of nucleating agent were prepared in a twin-screw extruder. The influences of type and level of nucleating agent on the tensile, thermal, and morphological properties of the blend films were investigated. Furthermore, effects of different cooling rates (1–10 °C min⁻¹) on non-is...

Industrial hemp is a green economic plant for biogas and fuel. It is also used mainly in construction, paper, and textile industries. After harvested, the stubs of hemp are left as wastes. Therefore, the added value of this part is considered in this study. Mechanical defibrillation is an interesting method which does not require any harmful chemic...

The hybrid layer of homo poly (pyrrole/3, 4-ethylenedioxythiophene)/reduced graphene hydrogel (PPy/ PEDOT/rGH) was fi rstly successfully fabricated via cyclic voltammetry. The results reveal the highly micro-nanoporous morphology of PPy/PEDOT/rGH electrode which is the ef fi cient pathways for sup- porting ion diffusion into interior surface. The c...

Polylactide (PLA) and its blend films with and without a compatibilizer in the presence of poly(butylene adipate-co-terephthalate) (PBAT) and talc were prepared through a twin-screw extruder. The effects of PBAT, talc, and various contents of compatibilizer on thermal and morphological properties as well as crystallization of these blends were inve...

Two types of agricultural wastes, Bagasse (BG) and Banana Stem (BS) were extracted and hydrolyzed into Microcrystalline Cellulose (MCC) by acid hydrolysis using HCl and H2SO4. The suitable condition for preparing MCC from each agricultural waste was investigated. From the results of Thermogravimetric Analysis (TGA), the suitable NaOH concentrations...

Banana is one of the most important tropical fruits in Thailand. It is available throughout the year, i.e., no specific growing season, resulting to the low cost. All parts of banana plant can be used, particularly its fruit has several adaptable in term of how to eat it. However, banana is ripe and perishable easily. Therefore, it is a potential r...

Metal based-zeolite catalysts were successfully prepared by two different methods including ion-exchange and wet impregnation. HZSM-5 synthesized by hydrothermal method at 160 °C was used as a support for loading metals including Co, Ni, Mo, Ga and Pd. The metal/HZSM-5 had surface area and pore size of 530–677 m2/g and 22.9-26.0 Å. Non- and catalyt...

Physic nut waste is selected as the biomass feedstock for fast pyrolysis as it is available in large amounts from biodiesel production in Thailand. The volatile matter and fixed carbon contents are 73.8% and 13.6% while ash contents are 5.8%. Carbon is the main element with 49.03 wt%. The oxygen content of 39.0 wt% is considerably high which could...

The catalytic fast pyrolysis of Jatropha waste using synthesized HZSM-5 zeolites was investigated using an analytical pyrolysis-GC/MS (Py-GC/MS) technique. HZSM-5 zeolite was successfully synthesized by hydrothermal method at 160 A degrees C with various synthesis times of 0, 24, and 72 h. From the XRD results, the as-synthesized powder before crys...

This research focused on the utilization of modified banana leaf sheath (BS) to be used as the compatibilizer for biocomposite films based on poly(lactic acid) (PLA) and 40 wt.% banana leaf sheath microcrystalline cellulose (BS MCC). Two types of cellulose ester, i.e. cellulose butyrate and cellulose laurate were used as a compatibilizer. The cellu...

The purpose of this research was to improve the flame retardant properties of PET using silatrane complex synthesized from silica through one pot process. In addition, the synergistic effect of flame retardant agents between silatrane complex and montmorillonite (MMT) at various concentrations was investigated. The characteristics of the obtained s...

HZSM-5 with high surface area of 625 m(2)/g was successfully synthesized by hydrothermal method at 160 degrees C for 72 h. The metal promoted on HZSM-5 catalyst was prepared by liquid ion exchange method. From XRD results, the addition of metals such as Co and Ni did not change the HZSM-5 structure. The metal/HZSM-5 showed lower crystallinity and s...

Fly ash from pulp and paper industries was used as a raw material for synthesizing zeolite catalyst. Main compositions of fly ash consisted of 41 wt%SiO2, 20 wt%Al2O3, 14 wt%CaO, and 8 wt% Fe2O3. High content of silica and alumina indicated that this fly ash has potential uses for zeolite synthesis. Fly ash was mixed with 1–3 M NaOH solution. Sodiu...

Biocomposite films from polylactic acid (PLA) and 40wt% banana stem microcrystalline cellulose (BS MCC) were prepared by a twin screw extruder. Two types of cellulose ester, i.e. cellulose butyrate and cellulose laurate were used as a compatibilizer. The cellulose esters were prepared via acylation process under microwave heating. The proper condit...

Wood flour/high density polyethylene (HDPE) composites were prepared by an internal mixer and a compression molding, respectively. The HDPE composites were mixed with four types of wood flour at various contents with and without coupling agent. Polyethylene grafted maleic anhydride (PE-g-MA) was used as a coupling agent. The effects of type (hardwo...

Perovskite-type oxide with transition metal as active site presented a promising potential catalyst for tar elimination in gasification process. LaNi1-xCoxO3 (x= 0, 0.3, 0.5, 0.7, and 1) were prepared by sol-gel method. The XRD profiles of the calcined catalysts revealed the mixed metal oxide forms including LaNiO3 and LaCoO3 rhombohedral structure...

Poly (ethylene terephthalate) or PET was used in many applications such as packagings, textiles, electrical devices, and auto parts as well due to its good mechanical properties and dimensional stabilities, etc. However, the main drawback of PET is poor flame retardant and melt-dripping, which needed to be solved. Therefore, the aim of this researc...

Biodegradable ternary blend films of nucleated polylactide (PLA), poly (butylene adipate-co-terephthalate) (PBAT), and thermoplastic starch (TPS) with the presence of nucleating agent and compatibilizer were prepared via a twin screw extruder. The effects of compatibilizer types and starch contents on the thermal, morphological, and tensile propert...

High molecular weight PLA was successfully synthesized by chain extension reaction of hydroxylated prepolymer using succinic anhydride as a chain extender. Hydroxylated prepolymer was prepared by direct condensation polymerization of L-lactic acid in the presence of 1,4-butanediol. Various molar ratios between hydroxylated prepolymer and succinic a...

Perovskite-type mixed oxides La1−xCexCoO3 (x = 0, 0.2, 0.4) were synthesized by sol–gel method via polyvinyl alcohol (PVA) as gelating agent. LaCoO3 and CeO2 phases were presented while intermediate phase, La(OH)3, disappeared during LaCoO3 transformation. Introduction of Ce decreased crystal size of catalyst from 22.18 to 13.38 nm. Particle size a...

Catalytic pyrolysis of Jatropha waste was investigated by using analytical pyrolysis-GC/MS technique at 500 °C. Jatropha waste is selected as the biomass feedstock for fast pyrolysis as it is available from biodiesel production in large amounts and leads to the disposal and environmental problems. Pyrolytic products of Jatopha waste without catalys...

NaZSM-5 and HZSM-5 zeolite were synthesized by hydrothermal method at 160 °C with crystallization time of 24 h and then calcined at 540 °C for 5 h. Phase analysis of synthesized zeolites determined by XRD technique confirmed the characteristic peaks of synthesized NaZSM-5 and HZSM-5 zeolite presented at 2 of 7−9° and 23–25°. The particles of NaZSM...

The development of a suitable sensing material for a high-sensitivity detection method for ethylene is needed to enhance the efficiency of estimating the life expectancy of agricultural products. A novel sensor for ethylene gas comprised of a polyaniline/multiwall carbon nanotube/tin oxide nanoparticle (PANi/MWCNT/SnO2NP) was successfully synthesiz...

Polylactide (PLA) blends with 0–40 wt % gelatinized starches (GSs) in the presence of plasticizers and compatibilizer for improving interfacial bonding between two phases were prepared. The effects of compatibilizer, type and amount of starch, including type and concentration of plasticizer on the physical, morphological, thermal, and mechanical pr...

Hybrid metal ion and polyvinyl alcohol (PVA) was prepared to obtain La1−xCexNiO3 (x = 0, 0.2, and 0.4) perovskite-type catalyst powder by sol-gel method. Metal ion to PVA monomer molar ratio was assigned at 1:1. The metal ion formed into complex precursors with alkoxide to improve the elemental dispersion and prevent agglomeration of obtained catal...

The objectives of this research were to prepare self-reinforcement biocomposites films from sisal cellulose by solvent casting using NaOH complex solution and to investigate the effect of reinforcement content (i.e., 0, 5, 10, 15, and 20 wt %) in various forms, i.e., sisal microcrystalline cellulose (MCC), commercial MCC, and short sisal fiber, res...

Long chain cellulose ester (LCCE) synthesized by acylation reaction via microwave process was used as a compatibilizer for banana stem microcrystalline cellulose/polylactic acid (BS MCC/PLA) composite. The proper reaction time and power output for LCCE synthesis were 150 second and 160 watt, respectively, which resulted in the highest weight increa...

Biodegradable plastic reinforced natural fiber composites are finding applications in many fields ranging from construction industry to food industry. The use of natural bio based fillers as reinforcements in composites has several advantages over inorganic fillers including lower density, renewability, and biodegradability. In this research, polyl...

Polylactide biodegradable composite films were prepared via melt extrusion using a twin screw extruder. The effects of type and content of nucleating agent and cooling rate on the thermal and tensile properties of these films were investigated. Two types of nucleating agent, talc and nano precipitated calcium carbonate (NPCC), were studied at vario...

The biodegradability of polylactide (PLA) and gelatinized starches (GS) blend films in the presence of compatibilizer was investigated under controlled soil burial conditions. Various contents (0–40 wt%) of corn and tapioca starches were added as fillers; whereas, different amounts of methylenediphenyl diisocyanate (MDI) (0–2.5 wt%) and 10 wt% base...

The esterification of cellulose from waste cotton fabric in a N,N-dimethylacetamide/lithium chloride solvent system was carried out using different types of fatty acid chloride including butyryl chloride, capryloyl chloride, and lauroyl chloride as esterifying agents, and N,N-dimethyl 1-4-aminopyridine as a catalyst under conventional and microwave...

Currently solid wastes generated from manufacturing process of thermosetting composite have caused environmental problems because they are non biodegradable product and cannot be recycled or remolded due to chemically crosslinked. Thus, the aim of this research is to convert glass fiber reinforced epoxy composite waste to fuel gases by gasification...

Biodegradable blend films of polylactide (PLA), thermoplastic starch (TPS), and poly(butylene adipate-co-terephthalate) (PBAT) were prepared through reactive modification. Three types of compatibilizers, methylenediphenyl diisocyanate (MDI), maleic anhydride (MA), and MA-g-PE, were studied. PLA and PBAT were blended in the presence of the compatibi...

This work focused on the preparation of the biocomposite films of polylactic acid (PLA) reinforced with microcrystalline cellulose (MCC) prepared from agricultural waste, banana stem fiber, and commercial microcrystalline cellulose, Avicel PH 101. Banana stem microcrystalline cellulose (BS MCC) was prepared by three steps, delignification, bleachin...

The release of ethylene gas from agricultural products such as fruits, vegetables, and flowers during storage and transportation is the main cause of blooming of flowers and ripeness of fruits before their ripening phase. The ethylene gas acts as hormone plant leading to a decrease in the life time of agricultural products and a deterioration of pr...

This work involved a study of polymer-fiber composites as biodegradable packaging made from recycled polyethylene (r-PE) and chemical-treated cotton fabric waste micro fibers. A compatibilizer, polyethylene-graft-maleic anhydride (PE-g-MA), was used to improve properties of the composites. Factors affecting composite properties were investigated in...

This paper studied the effects of 4 types of additives, UV-absorber, antioxidant, carbon black, and fl ame retardant, on mechanical properties and UV- stability of glass fiber reinforced epoxy (GRE) pipes prepared by filament winding process using a MTHPA (Methyl Tetrahydrophthalic Anhydride) as a catalyst. The amount of additives used was varied f...

. La1-xCexCoO3 (x=0, 0.2, and 0.4) perovskite-type mixed oxides using polyvinyl alcohol (PVA) as complexing agent at two molar ratio of metal ion to PVA (1:1 and 1:2) were successfully prepared by sol-gel process. The precursor included lanthanum (II) nitrate hexahydrate, cerium (II) nitrate hexahydrate, and cobalt (II) nitrate hexahydrate where po...

Pyrolysis is one form of energy recovery process which has the potential to generate oil, gas and char products. The char becomes an attractive by-product, with applications including production of activated carbons that is useful as a sorbent for wastewater treatment and air pollution control. In this work, activated carbon was prepared from Coffe...

IntroductionExperimental ProcedureResults and DiscussionConclusion Acknowledgement

Ethylene gas is released from plants as a hormone during a certain stage of life cycle and induces ripeness in fruits and blooming of flowers. The early detection and control amount of ethylene gas in storage can prevent wastage of the entire stock. The aims of this research were to fabricate ethylene sensor based on polyaniline (PANi) and to inves...

Three types of unsaturated polyester matrix, ortho phthalic, iso phthalic, and vinyl ester, reinforced with glass fiber laminated composite waste have been subjected to investigate thermal decomposition behavior and kinetic parameters using non-isothermal thermogravimetric analysis from an ambient to temperature 900°C under nitrogen atmosphere at t...

Blend films containing two types of starch, various amounts of methylenediphenyl diisocyanate (MDI), and polylactide were prepared. The effects of MDI level and starch type on the tensile, thermal, and morphological properties of these films were investigated. The MDI amount was varied from 0 to 10 wt % on the basis of gelatinized starch (GS) conte...

Perovskite-type oxides catalyst are of interest for various application such as auto-thermal reforming (ART), catalytic wet air oxidation (CWOA) and piezoelectric (PZT). In this paper, La1-xCexNiO3 (x= 0-0.4) perovskite-type oxides have been prepared b sol-gel process using PVA. The precursor was mixed metal ion and PVA with a mole ratio of 1:1 and...

The aim of this work is to fabricate an ethylene gas sensor based on polyaniline (PANi). The conductive layer of emeraldine base PANi was prepared by electrochemical synthesis. The aqueous aniline solution in sulfuric acid was electrolyzed by repeating potential cycling between -0.4 and 1.0 V relative to the silver reference electrode and platinum...

This work focused on an improvement of flame retardant properties of acrylonitrile-butadiene-styrene (ABS) by varying amount of silica and organomontmorillonite (OMT). The silica was extracted from agricultural waste such as rice husk by chemical treatment. The obtained silica was characterized by SEM-EDX, XRF, FTIR, laser particle size analysis, a...

The modified cellulose film was synthesized from corn husk and waste cotton fabrics in LiCl/DMAc solvent system by esterification reaction under microwave energy using lauroyl chloride and DMAP as an esterifying agent and a catalyst, respectively. By varying microwave power and reaction time used in the esterification reaction, modified cellulose p...

Polylactic acid (PLA), one of the most promising bio-based materials currently available on the market, has gained much attention recently as an alternative to non-biodegradable synthetic polymers due to its comparable properties and biodegradability. The objectives of this work were to prepare a green composite between PLA and coconut fiber (CF) t...

The synthesis of cellulosic plastic films from waste cotton fabrics under homogeneous conditions by microwave heating using lauroyl chloride as an esterifying agent was studied. Nevertheless, the cellulose laurate film obtained was quite brittle than some other commercial synthetic polymers. Thus, the aim of this work was to investigate the effects...

Poly (ethylene terephthalate) (PET)/montmorillonite (MMT) nanocomposites were prepared by solution technique using 50/50 phenol/tetrachloroethane as a solvent, assisted with the ultrasonic power to promote the compatibility and dispersion of the montmorillonite in the PET solution. The PET concentrations were varied from 5, 7, and 9 %w/v. Two types...

Char derived from pyrolysis of physic nut waste at 400-800°C was used for the preparation of activated carbon by chemical impregnation of phosphoric acid and potassium hydroxide. The original char exhibited the BET surface area in the range of 120-250 m2·g-1. The surface area increased to 480 and 532 m2·g-1 when activated with H3PO4 and KOH, respec...

The possibility for preparation of biodegradable film from cellulose-enrich waste was studied. This work dealt with the synthesis of cellulose film in LiCl/DMAc solvent system by microwave-induced esterification of cellulose from waste cotton fabric using DMAP and lauroyl chloride as a catalyst and esterifying agent, respectively. The cellulose lau...

A regression model was constructed to elucidate the effects of various additives on the UV- stability of glass fiber reinforced epoxy (GRE) pipes by applying a four-factor central composite design (CCD) statistical approach. Four factors investigated were amount of UVabsorber, antioxidant, carbon black, and flame retardant. The ANOVA showed that mo...

Use of waste as raw material for producing porous carbon was investigated in this work. Physic nut (Jatropha curcas L.) residue from oil extraction for biodiesel production was pyrolyzed at 400–800 °C with hold times of 15, 120, and 240 min to obtain char precursors. Activated carbon, with favorable Brunauer–Emmett–Teller surface area in a narrow r...