Edcleide M. Araujo

Universidade Federal de Campina Grande (UFCG) | UFCG · Centro de Ciências e Tecnologia – CCT

Formulating polymer blends is of vital scientific and industrial interest because of their low cost and the possibility of producing new materials with tailored properties. In this research, polypropylene (PP)/acrylonitrile–butadiene–styrene (ABS) polymer blends were prepared using styrene-ethylene-butylene-styrene (SEBS) and styrene-ethylene-propy...

Blends of polyamide 6 (PA6) and polyethylene-grafted acrylic acid (PE-g-AA) in contents 90/10, 80/20, and 70/30 were processed in a torque rheometer. Fourier transform infrared spectroscopy spectra showed secondary hydrogen bond interactions between COOH (PE-g-AA) and NCOH (PA6) groups. Addition of PEg -AA did not promote significant changes in the...

Low‐density biopolyethylene (BioLDPE) ecocomposites added with particles of eggshell (ES) residue were produced using linear low‐density polyethylene grafted with maleic anhydride (LDPE‐g‐MA) as a compatibilizing agent. BioLDPE/ES and BioLDPE/ES/LDPE‐g‐MA compounds were processed in a twin‐screw extruder, and the specimens were injection molded. To...

Poly (lactic acid) (PLA) compounds with castor oil (CO) and epoxidized castor oil (ECO) were produced via formic acid, with levels of 5% CO, 3 and 5% ECO. The contribution of this study lies in the detailed analysis of thermal degradation and degradation kinetics of PLA/CO and PLA/ECO. Chemical changes were evidenced by Fourier transform infrared (...

This work explores the synthesis of the isosorbide-based curing agent with methyltetrahydrophthalic anhydride (MTHPA). Synthesized for the first time, the isosorbide methylphthalate acid (IMPA) and its effects on the crosslinking of epoxidized soybean oil (ESO) are investigated. The curing and degradation kinetics of the synthesized compounds were...

Acrylonitrile‐EPDM‐styrene (AES) was applied as an impact modifier for poly(lactic acid) (PLA), and the combined effect of dicumyl peroxide (DCP) crosslinking and annealing heat treatment was investigated. Torque rheometry, melt flow index (MFI), mechanical properties (impact, tensile, and Shore D hardness), X‐ray diffraction (XRD), infrared spectr...

The postconsumer waste of vulcanized styrene–butadiene rubber (SBRr) is a raw material rich in additives with potential reuse in the plastics processing industry. The present investigation evaluated the effectiveness of styrene–ethylene/butylene–styrene copolymer (SEBS) in the compatibilization of biopolyethylene (BioPE)/SBRr blends. The blends wer...

The development of polymeric biocomposites containing natural fibers has grown over the years due to the properties achieved and its eco-friendly nature. Thus, biocomposites involving a polymer from a renewable source (Biopolyethylene (BioPE)) and babassu fibers (BFs), compatibilized with polyethylene grafted with maleic anhydride (MA) and acrylic...

Antistatic packaging has gained great importance for protecting sensitive electronic devices against static charges. In this work, polyamide 6 (PA6)/carbon nanotubes (MWCNT) nanocomposites were developed in the molten state, aiming to evaluate the potential for dissipation of static charges. The properties of torque rheometry, melt flow index (MFI)...

There is a need to develop environmentally friendly materials, especially plastics, that minimize environmental pollution. In this sense, polypropylene (PP) composites were produced with 20 wt% of Macaiba almond powder (MA*) and compatibilized with SEBS-MA and EPDM-MA to carry out a biodegradation investigation of these composites. Mechanical prope...

Epoxy thermosets, sourced from plant oils and compatible curing agents, have emerged as environmentally friendly alternatives to fossil-based polymers. The choice of curing agent strongly influences the curing kinetics and final properties. Compounds based on epoxidized soybean oil (ESO) were cured with carboxylic acids, i.e., salicylic (SA), malei...

Polystyrene (PS)/acrylonitrile-butadiene-styrene (ABS) blends were processed in a corrotational twin-screw extruder and molded by injection. Styrene-(ethylene-propylene) (SEP), styrene-(ethylene-butylene)-styrene (SEBS), and styrene-butadiene-styrene (SBS) copolymers were tested as compatibilizing agents. The rheological, mechanical, thermal, therm...

In this work, polyhydroxybutyrate (PHB) was maleic anhydride (MA)-grafted in the molten state, using dicumyl peroxide (DCP) as a reaction initiator. Tin(II) 2-ethylhexanoate (Sn(Oct)2) and styrene monomer (St.) were used to maximize the maleic anhydride grafting degree. When PHB was modified with MA/DCP and MA/DCP/Sn(Oct)2, viscosity was reduced, s...

The effect of four mixing protocols was investigated in blends of polystyrene (PS) with recycled copolymer polypropylene (PPr), using 10% by weight of styrene-(ethylene-butylene)-styrene (SEBS) as a compatibilizing agent. The polymeric blends were processed in a co-rotational twin-screw extruder and injection molded. The melt flow index (MFI), Izod...

In this work, blends based on poly (lactic acid) (PLA)/acrylonitrile-butadiene-styrene (ABS) compatibilized with maleic anhydride-grafted (SEBS-g-MA) were prepared in a co-rotational twin-screw extruder by varying the concentrations of the compatibilizing agent. The influence of the compatibilizing agent on the morphology, mechanical, thermal, ther...

The residue of coconut flour (RCF) was used as a bioadditive to evaluate its technological potential as an accelerator of polycaprolactone (PCL) biodegradation. PCL/RCF biocomposites (5-30% by weight) were processed using an internal mixer, and further on, specimens were molded by compression and injection. Experiments such as contact angle, torque...

High-performance blends based on polyamide 6 (PA6) were prepared using a hybrid mixture of acrylonitrile/EPDM/styrene (AES) and maleic anhydride grafted ethylene–propylene–diene (EPDM-MA). Samples were processed in a twin-screw extruder and injection molded. The torque curves of the PA6/AES/EPDM-MA blends shifted to higher torque values with added...

Poly(lactic acid) has been gaining prominence in academia and industry, mainly due to being a biopolymer and biodegradable material. Nevertheless, mainly due to its high fragility, work has been carried out in order to seek alternatives to improve this drawback. Hence, this work aims to evaluate the effect of the vinyl acetate content using two typ...

Polypropylene/Syagrus Cearensis fiber composites compatibilized with polypropylene-graft-maleic anhydride (PP-g-MA) and styrene(ethylene-butylene)-styrene copolymer (SEBS-g-MA) were successfully produced using a corotating twin-screw extruder followed by injection molding. The composites were characterized by X-ray diffraction (XRD), Fourier transf...

The reactivity of different polyethylene modifiers based on acrylic acid (AA) and maleic anhydride (MA) with polyamide 6 (PA6) is investigated, using several degrees of functionalization. The polymer blends are processed in an internal mixer and injection molded. Mechanical, rheological, infrared spectroscopy, thermal, thermomechanical properties,...

Poly(lactic acid) (PLA)/natural rubber (NR) blends were compatibilized with elastomeric ethylene grafted with glycidyl methacrylate (EE-g-GMA), and poly(ethylene octene) grafted with glycidyl methacrylate(POE-g-GMA), aiming at the PLA toughening. The blends were processed using a twin-screw extruder and then injection molded. The mechanical, therma...

Polypropylene (PP) compounds with styrene–butadiene rubber residue (SBRr) from the footwear industry were produced, adding styrene-(ethylene–butylene)-styrene (SEBS) as a compatibilizer, with 20% and 30% of styrene (St.). The PP/SBRr and PP/SBRr/SEBS compounds were processed in a co-rotating twin-screw extruder and injection molded. The addition of...

Poly (lactic acid) (PLA) is one of the most currently investigated polymers due to its production from renewable sources and biodegradability. Being a brittle polymer, PLA has low toughness, limiting its use for commercial applications. Therefore, the present work aims to produce PLA blends, using the ethylene‐vinyl acetate copolymer (EVA), dynamic...

The vulcanized residue of styrene-butadiene rubber (SBRr) is a raw material with potential for re-addition in the production chain, adding value and reducing environmental impact. Polypropylene (PP) compounds with SBRr from the footwear industry were produced, adding styrene-(ethylene-butylene)-styrene (SEBS) as compatibilizer, with 20% and 30% of...

The industrial residue of Jatobá wood flour (JWF) was reused during production of biocomposites based on polycaprolactone (PCL), 50% by weight of JWF was added to PCL matrix. Initially, maleic anhydride-grafted polycaprolactone compatibilizer (PCL-g-MA) was synthesized and characterized using X-ray diffraction (XRD), nuclear magnetic resonance (NMR...

Nylon 6/acrylonitrile-butadiene-styrene nanocomposites were prepared by mixing in a molten state and injection molded for application in electromagnetic interference shielding and antistatic packaging. Multi-wall carbon nanotubes (MWCNT) and maleic anhydride-grafted ABS compatibilizer were incorporated to improve the electrical conductivity and mec...

Poly(lactic acid) (PLA) is one of the most important ecological thermoplastics due to its good mechanical properties. In light of this, investigations related to the effects of PLA processing parameters are important as they affect the final product performance. This work aimed to determine the viscosity-temperature coefficient (β) and pseudoplasti...

In this work, the copolymers ethylene-glycidyl methacrylate (E-GMA), ethylene methyl methacrylate-glycidyl methacrylate (EMA-GMA), and styrene-(ethylene-butylene)-styrene grafted with maleic anhydride (SEBS-g-MA) were used to compatibilize polystyrene (PS)/poly(caprolactone) (PCL) blends. The blends were processed in a co-rotating twin-screw extrud...

This work investigated the effect of thermo-oxidation aging in blends of copolymer polypropylene (PPc)/recycled copolymer polypropylene (PPcr) from industrial container waste, coded as PPc/PPcr blends. All compounds were melt extruded, and the injection molded specimens were characterized by mechanical properties (tensile and impact), Fourier-trans...

Flat membranes composed of blends have been studied in the treatment of wastewater due to the influence on their properties. The objective of this study is to develop flat membranes from pure polymers and polymeric blends of polyestersulfone/polysulfone, improving morphology and permeability, making them suitable for the treatment of oily waters. I...

The mixing protocol effect was investigated in nanocomposites based on polyamide 6 (PA6) and maleic anhydride grafted ethylene‐propylene‐diene (EPDM‐MA), using Ni‐Zn ferrite as filler. The nanocomposites were processed using an internal mixer and specimens were injection molded. Compounds properties were investigated through Izod impact strength, t...

Herein, we prepared toughened and electrical nanocomposites of polyamide 6 (PA6)/acrylonitrile‐butadiene‐styrene (ABS) compatibilized with maleic anhydride‐grafted acrylonitrile‐butadiene‐styrene (ABS‐MA). Functionalized multi‐walled carbon nanotubes (MWCNTf) were used as conductive nanofillers. Nanocomposites were processed in an internal mixer an...

In this work, polyamide 6 (PA6) properties were tailored and improved using a maleic anhydride-grafted acrylonitrile-butadiene-styrene terpolymer (ABS-MA). The PA6/ABS-MA blends were prepared using a co-rotational twin-screw extruder. Subsequently, the extruded pellets were injection-molded. Blends were characterized by torque rheometry, the Molau...

Wastewater treatment and saltwater desalination are ways to confront water scarcity in the world. The objective of this research is the development of polysulfone (PSf) hollow fiber membranes and their respective hybrids with attapulgite clay (UBM) for effluents treatment. Membranes were produced by PSf, with 10, 15 and 20% of clay, from the phase...

This work aimed to investigate the biopolyethylene (BioPE)/wood powder (WP) composites compatibilized with polyethylene-grafted maleic anhydride (PE-g-MA), using macaíba oil (OM) as a processing aid. The composites were prepared, fist, in an internal mixer and, later, the crushed flakes were molded by injection. Mechanical properties (impact, tensi...

The present investigation aimed to produce ecological composites of biopolyethylene (BioPE) with macaíba shell (MS), using polyethylene‐graft‐maleic anhydride (PE‐g‐MA) and polyethylene‐graft‐acrylic acid (PE‐g‐AA) as compatibilizers, as well as macaíba almond oil as a plasticizing agent. The composites were processed in a co‐rotational twin‐screw...

Nowadays, there is a need to obtain eco-friendly materials, especially plastics that are responsible for most of the environmental pollution. In this regard, poly(ɛ-caprolactone) PCL biocomposites with 10wt% of the oil (O) and/or 10wt% of the flour (F) extracted from the macaíba almond were produced in order to carry out a study of this polymer bio...

PLA has aroused industrial and scientific interest in recent years, mainly due to its biodegradable character. However, PLA is brittle and displays low impact strength which has motivated researches to improve its toughness. The present work aims to produce PLA/EVA blends, and to investigate the EVA effect on PLA as well as the annealing which carr...

The heat treatment effect on kaolin waste from mining was evaluated on the structural and thermal behavior of poly(ε-caprolactone) (PCL). The PCL/KW (kaolin waste) and PCL/HTKW (heat-treated kaolin waste) composites were processed in an internal mixer and subsequently characterized by X-ray diffraction (XRD) and differential scanning calorimetry (D...

Poly(ethylene-octene) grafted with glycidyl methacrylate (POE-g-GMA) and ethylene elastomeric grafted with glycidyl methacrylate (EE-g-GMA) were used as impact modifiers, aiming for tailoring poly(lactic acid) (PLA) properties. POE-g-GMA and EE-g-GMA was used in a proportion of 5; 7.5 and 10%, considering a good balance of properties for PLA. The P...

Atualmente, os polímeros vêm sendo reforçados com fibras naturais, visando a geração de uma classe de novos materiais menos agressivos ao meio ambiente. Portanto, este trabalho teve como objetivo desenvolver compostos de biopolietileno (BioPE)/línter de algodão, compatibilizados com o polietileno enxertado com anidrido maleico (PE-g-MA). Os compost...

Motivated by environment preservation, the increased use of eco-friendly materials such as biodegradable polymers and biopolymers has raised the interest of researchers and the polymer industry. In this approach, this work aimed to produce bioblends using poly (lactic acid) (PLA) and high-density biopolyethylene (BioPE); due to the low compatibilit...

Given the need to produce biodegradable materials, especially plastics that contribute to environmental pollution, in this work poly(ɛ‐caprolactone) (PCL) biocomposites were produced with 10%, 15%, and 20% by weight of macaíba fiber (MF) which was treated by toluene and by plasma, aiming at compounds production with high performance and biodegradab...

Magnetic and flexible nanocomposites of polyamide 6 (PA6)/styrene-(ethylene-butylene)-styrene grafted with maleic anhydride (SEBS-MA) were prepared using Ni-Zn ferrite synthesized by combustion reaction. Thermal treatment was applied to the Ni-Zn ferrite to form a more crystalline phase. The nanocomposites were processed in an internal mixer and la...

Biocompounds based on poly(butylene adipate‐co‐terephthalate) (PBAT) and polylactic acid (PLA) were produced at 50:50 with 1% and 5% of Babassu. Modulated differential scanning calorimetry was employed to elucidate their complex melt and cold crystallizations and recrystallization. Heat flow signals under applied amplitudes/frequencies did not sign...

Carbon fiber (CF) is a difficult material to recycle, generating accumulation and environmental impacts when disposed of incorrectly. The practice of reuse is being encouraged, aiming to minimize socio-environmental impacts. The present research aimed to develop polypropylene (PP) composites with CF waste, using styrene-(ethylene-butylene)-styrene...

Polypropylene (PP) blends with acrylonitrile-butadiene-styrene (ABS) were prepared using the styrene-ethylene-butylene-styrene copolymer (SEBS) as a compatibilizing agent. The blends were prepared in a co-rotational twin-screw extruder and injection molded. Torque rheometry, Izod impact strength, tensile strength, heat deflection temperature (HDT),...

The development of new ecological materials to promote sustainability is being encouraged. Crosslinked biopolyethylene (BioPE)/noni flour (Morinda citrifolia) biocomposites were prepared using maleic anhydride‐grafted polyethylene (PE‐g‐MA) and dicumyl peroxide (DCP). The biocomposites were processed in an internal mixer and injection molded. Torqu...

A polisulfona é um material promissor para produção de membranas. Porém, visando promover uma maior resistência à formação de incrustações e melhorias na permeabilidade, seletividade e resistência (mecânica e química) à estes tipos de membranas, a adição de nanopartícula inorgânicas como dióxido de titânio, têm sido propostos para obter propriedade...

The functionalization of the ethylene–vinyl acetate copolymer (EVA) was carried out in an internal mixer, using maleic anhydride (MA), dicumyl peroxide (DCP) and styrene monomer (St) as additives. Torque rheometry, Fourier transform infrared spectroscopy (FTIR), titration, gel content, thermogravimetry (TG) and differential scanning calorimetry (DS...

Neste trabalho, a poliamida 6 (PA6) foi tenacificada com o terpolímero de acrilonitrila-EPDM-estireno (AES), utilizando o etileno-propileno-dieno enxertado com anidrido maleico (EPDM-MA), como agente compatibilizante. As blendas foram preparadas em uma extrusora de rosca dupla corrotacional e, posteriormente, moldadas por injeção. As propriedades d...

Blendas de poliamida 6 (PA6) com poliestireno de alto impacto (HIPS) foram preparadas, utilizando-se o copolímero de estireno-(etileno-butileno)-estireno enxertado de anidrido maleico (SEBS-MA), como agente compatibilizante. As blendas foram preparadas em uma extrusora de rosca dupla corrotacional e, posteriormente, moldadas por injeção. As proprie...

In this work, PA6/EPDM-MA was added as an impact modifier for high-performance polypropylene (PP) production. PA6/EPDM-MA compounds were processed in an internal mixer, aiming at chemical reaction between maleic anhydride of EPDM-MA and the amine terminal groups of PA6. Afterward, PP/(PA6/EPDM-MA) blends were processed by extrusion and injection mo...

A produção de materiais ecológicos está sendo incentivada, visando minimizar os impactos ambientais e promover uma maior sustentabilidade. Portanto, esse trabalho, teve como objetivo desenvolver biocompósitos de biopolietileno (BioPE)/farinha de madeira (FM), utilizando como compatibilizante o polietileno enxertado com anidrido maleico (PE-g-MA). O...

Poly (lactic acid) (PLA) is widely used biodegradable thermoplastic in the additive manufacturing, mainly on manufactured products through 3D printing. However, PLA is highly fragile and presents low impact strength; hence improvements on this way are industrially and technologically important. Aiming to develop proper methodology for higher PLA pe...

In order to reduce the impacts of the industrial effluent on the environment, silicon carbide hollow fiber membranes were prepared by the precipitation-immersion technique and sintered at 1450 and 1500 °C. The membranes were characterized by X-ray diffraction, their surface structure was characterized by scanning electron microscopy and atomic forc...

In this work, an experimental design was applied in the injection molding process of polycaprolactone (PCL), aiming to evaluate the mechanical properties (impact strength, tensile strength and Shore D Hardness), thermal (differential scanning calorimetry (DSC)) and thermomechanical (heat deflection temperature (HDT)), in PCL injected specimens. A t...

Biocomposites based on macaíba shell (MS) and Polycaprolactone (PCL) were melting processed in this work; seeking better compatibility between PCL, MS was chemically treated with maleic anhydride (MA) and sodium hydroxide (NaOH), in addition, PCL‐g‐MA was used as compatibilizer. The biocomposites' performance was evaluated through Fourier transform...

This work aimed to investigate the biopolyethylene (BioPE)/wood powder (WP) composites compatibilized with polyethylene-grafted maleic anhydride (PE-g-MA), using macaíba oil (OM) as a processing aid. The composites were prepared, initially, in an internal mixer and, later, the crushed flakes were molded by injection. Mechanical properties (impact,...

Use of fiber reinforced composites derived from renewable sources has increased in recent years, aiming at a balance between sustainability and technological development. This research sought to develop poly (lactic acid) (PLA)/poly (ε-caprolactone) (PCL) composites using wood powder (WP) as reinforcement. The composites were initially prepared in...

Membrana pode ser definida como uma barreira, que separa duas fases e restringe o transporte de vários produtos químicos de forma seletiva, apresentando diferentes classificações, morfologias e geometrias. Esses materiais são utilizados em aplicações como: ultrafiltração, microfiltração, pervaporação, separação de gases, órgãos artificiais e outros...

Motivado pelas necessidades tecnológicas e ambientais, os processos de separação por membranas têm exibido uma grande melhora em relação às técnicas tradicionais. Estes benefícios incentivam a aplicação de separações por membranas e estimulam o desenvolvimento em processos de purificação e esterilização nas indústrias farmacêutica e alimentícia, em...

Additive manufacturing is growing rapidly in the automotive, medical, and aerospace industries as an option for the manufacturing of products. However, there is a continuous growth in the amount of waste generated by 3D filaments, thus, the reuse practice becomes important, since it brings environmental and economic gains. The present research eval...

A demanda do mercado por polímeros biodegradáveis tem aumentado rapidamente, e a policaprolactona (PCL) aponta como opção interessante para indústria e a comunidade científica. O presente trabalho teve como objetivo avaliar o efeito do tratamento térmico de recozimento nas propriedades mecânicas (impacto, tração, flexão e dureza), termomecânicas (t...

Environmental damage promoted trough post‐consumer waste from the wood industry has worried the society, while its inadequate disposal has raised concerns of the scientific community. Environmentally and economically effective alternative is reusing this residue to produce smart composites. Therefore, this work aimed to investigate the performance...

Acrylonitrile‐butadiene‐styrene (ABS) functionalization is industrially important since it can wide the ABS application range. However, grafting of functional groups must be effective. This work aimed evaluating the effectiveness of ABS functionalization in an internal mixer, using maleic anhydride (MA) and dicumyl peroxide (DCP) as initiator, at 2...

The membrane separation process has been significantly highlighted for the treatment of water and effluents in a scenario of water resource scarcity. Effective treatments capable of reducing costs and waste are always necessary, with the planning of the experiments before their execution of interest. The purpose of this work was to evaluate, throug...

The practice of recycling over the years has been increasingly encouraged, with the aim being the manufacturing of materials that contribute to sustainable development. In light of this, the present work evaluated the potential of mixtures of polystyrene (PS)/recycled copolymer polypropylene (PPr), using styrene-(ethylene/butylene)-styrene (SEBS) a...

The aim of the present work is to evaluate the effect of NaOH solution as a stress cracking agent on the thermal and tensile properties of PET and PET/ZnO composites. The solutions were applied during tensile testing and the effects were monitored by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and testing the actual me...

Reusing rubber waste from footwear industry emerges as great practise in order to reduce environmental damage on natural ecosystems. Based on this target, the present work aimed to apply the response surface methodology (RSM) to polystyrene/styrene-butadiene PS/SBRr blends compatibilized with styrene-ethylene-butylene-styrene (SEBS). A mixture plan...

In this study, blends of copolymer polypropylene (PPCop /recycled polypropylene (PPRec) from industrial containers after consumption were evaluated in three different ratios (80:20, 60:40 and 40:60 wt.%). The blends were evaluated by melt flow index, torque rheometry and rheology in a dynamic oscillatory regime. The results from the melt flow index...

Polyamide 6 (PA6) is a widely applied thermoplastic, however, drawbacks as low notch impact strength and high moisture absorption hinder its commercialization. Seeking improvements for PA6, this work investigated blends based on PA6/maleic anhydride grafted ethylene propylene diene copolymer (EPDM-MA) with 1% maleic anhydride (MA). In the first ste...

Polypropylene is one of the most consumed thermoplastics in the transformation industry, generating a large volume of post-consumer waste. The practice of reusing materials presents an opportunity for the revaluation of post-consumer plastic waste, aiming to minimize the negative impacts of its disposal. In this work, blends of copolymer polypropyl...

Intelligent use of raw materials has been encouraged in both academia and industry; biodegradable polymers have been used for bio-composites development seeking the generation of new environmentally safe compounds. Therefore, this work aimed to develop poly (ϵ-caprolactone) (PCL) biocomposites upon wood powder (WP) addition and compatibilized by ma...

Large waste amounts from wood industries as powder and sawdust are daily produced, and reusing these materials otherwise would be discharged to the environment has become an economically viable and environmentally friendly alternative to produce new materials. Based on these arguments, polypropylene (PP)/Jatobá wood powder composites upon addition...

Researches of polymer blends based on biological and biodegradable polymers appear as a viable alternative to develop environmentally friendly materials. Therefore, the aim of this research was to produce compounds made with biological polyethylene, i.e., Biopolyethylene, Bio-PE, added to the biodegradable Polycaprolactone (PCL) and functionalized...

In this work, compounds based on two grades of polypropylene (PP), i.e., PP H503 or PP H103 with residues of Big bag fabrics (RBB) were processed in a corrotational twin screw extruder with RBB content ranging from 10% to 50% of the weight. Then, their thermal properties were investigated through Differential Scanning Calorimetry (DSC) and Thermogr...

The development of ceramic membranes with different geometries and compositions extends the possibilities of industrial applications, inducing advantages in terms of increased permeability, membrane area by volume module and chemical, thermal and mechanical resistance. The use of low-cost raw materials is a trend that has grown in scientific resear...

Biocomposites of poly (ϵ-caprolactone)/Macaiba (PCL/MF) upon fiber addition ranging from 10% to 20% were successfully extruded and thoroughly characterized by torque rheometry, thermogravimetry (TG), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), contact angle, heat deflection temperature (HDT), scanning el...

The aim of this study was to evaluate the photooxidative stability of polystyrene/vulcanized rubber waste blends, compatibilized with styrene–butadiene–styrene. High-impact polystyrene (HIPS) was used for comparison. All samples were exposed to ultraviolet (UV) radiation for 8 weeks and then analyzed for mechanical properties (tensile and impact),...