Hossein Barani

University of Birjand · Department of Carpet

Opuntia ficus-indica well adapts to extreme climate conditions and grows rapidly in low water and poor soil requirement. In this study, the Opuntia ficus-indica fruit was used for natural dyeing of wool yarn. The Opuntia ficus-indica fruit has a reddish-purple color, due to the presence of water-soluble betalain colorants. When using this fruit as...

In this study, a facile approach successfully developed a new Pd nanocatalyst supported by magnetic bentonite–chitosan with easy accessibility to active sites and a high surface area. The synthesized Fe3O4/Bentonite/Chitosan/Pd nanocatalyst indicated a good catalytic activity for the reduction of nitroarene compounds and the Suzuki–Miyaura reaction...

This study reports the preparation of a novel type of support based on magnetically recyclable bentonite functionalized with divinylbenzene-polyvinyl pyridine (PVP-DVB) for Pd (II) nanocatalyst by a simple cost-effective method. Firstly, the conventional co-precipitation method synthesized Fe 3 O 4 nanoparticles (NPs) onto bentonite sheets. Then th...

In this study, graphene oxide used as a stable support to adsorb and stabilize palladium nanoparticles for preparing a heterogeneous nanocatalyst. In order to increase the palladium adsorption, the surface of graphene oxide was functionalized with β-Cyclodextrin and cyanoguanidine compounds. The prepared nanocatalyst was defined by various characte...

The fluorescent silver nanoparticles were synthesized using trisodium citrate as a reducing and stabilizing agent in a microwave-assisted reduction process. The influence of synthesizing parameters such as reaction duration, temperature, and trisodium citrate concentration (100, 200, and 400 ppm) were examined on the characteristics and fluorescent...

The electrical conductivity of cotton fabrics was enhanced using an in situ synthesis of graphene or polymerization of conductive polymer. The impact of conductive materials concentration and monomer to oxidant molar ratio examined on the sheet resistance of coated cotton fabric. The polypyrrole coating resulted in a continuous layer consisting of...

Antibacterial and UV-protective cotton fabrics were produced with an in-situ synthesis of silver nanoparticles using trisodium citrate as reductive agent and microwave irradiation for starting the synthesis reaction. The creation of silver nanoparticles with different morphologies such as quasi-spherical and cubic nanoparticles was confirmed by the...

Antibacterial fiber mats of poly(lactic‐co‐glycolic acid) (PLGA) were produced in the presence of different amounts of the thiosemicarbazone (TSC) N 4‐(S )‐(1‐phenylethyl)‐2‐(pyridin‐2‐ylmethylene)hydrazine‐1‐carbothioamide (HfpyTSCmB) through electrospinning. Increasing amounts (0, 2.5, 5, and 10 wt%) of TSC in the PLGA spinning solution in 2,2,2‐...

Mats of polyvinyl alcohol (PVA) core–shell nanofibers were produced using coaxial electrospinning in the presence of a thiosemicarbazone (TSC) N4-(S)-1-phenylethyl)-2-(pyridin-2-yl-ethylidene)hydrazine-1-carbothioamide (HapyTSCmB). Monolithic fibers with 0% or 5% TSC and core–shell fibers with 10% TSC in the spinning solution were studied to compar...

The wool fiber is a suitable medium for growing different microorganism. In recent years, the treatment of textiles with silver compounds as an active antibacterial agent has gained increased attention to produce advanced medical and hygiene textiles. The current work aims to synthesize silver nanoparticles through two different methods, which are...

Purpose Finding blue colorants from natural sources is extremely difficult and, usually, the anthocyanin compounds are used for producing the blue color. This study aims to apply the Red Cabbage as a natural colorant to obtain different colors on wool yarn, as well as specify the optimum dyeing condition by response surface methodology for obtainin...

The stereocomplex formation is a promising method to improve the properties of poly(lactide) (PLA)-based products due to the strong interaction of the side-by-side arrangement of the molecular chains. Recently, electrospinning method has been applied to prepare PLA stereocomplex, which is more convenient. The objective of the current study is to ma...

A new method for biosynthesis of silver nanoparticles is proposed. A biochemical reduction method was used to synthesize AgNPs from silver nitrate solution using an aqueous solution of Safflower extract (Carthamus tinctorius L.) as a reducing and stabilizing agent. Effects of process parameters such as reaction time, temperature and extract solutio...

Poly(l-lactide) nano/micro fibres were produced using the electrospinning technique. The influence of solvent type and solution concentration on the morphology and structure of electrospun fibres were investigated. For this purpose, the electrospinning was performed using 2, 2, 2-trifluoroethanol (TFE) or dichloromethane (DCM) solvents at solution...

The keratin macromolecule in wool fiber may be found in α-helix or β-sheet conformations besides a disordered portion. The physical and chemical treatments may cause transformations between α-helix and β-sheet conformations. The aim of this study was to investigate the influence of lecithin treatment on the wool fiber using the micro-Raman spectros...

A new source of natural dye was introduced to obtain different colors on woolen yarn by varying the dyeing condition and formulation recipe. The fruit extract of Berberis integerrima was used as a natural dye for coloration of wool fibers. Response surface methodology (RSM) has been applied to design experimental runs to evaluate the interactive ef...

The potential application of any nanoparticles, including silver nanoparticles (AgNPs), strongly depends on their stability against aggregation. In the current study, an aqueous extract of pomegranate peel was used as a stabilizer during synthesis of AgNPs. Nanoparticles have been prepared by the chemical reduction method from an aqueous solution o...

Surfactant-clay interaction is very important for the development of their applications in different industries. The aim of this work was to evaluate the use of modified bentonite as a promising substitute for metallic mordants in the natural dyeing process. Therefore, the domestic bentonite was modified with different surfactants types such as a n...

The yellow flower of Achillea pachycephala plant, a new source of natural dye, was introduced and its dyeability on wool yarn fibers was studied. Central composite design (CCD) and response surface methodology (RSM) have been applied to design experimental runs to evaluate the interactive effects of the operating variables. The four independent num...

In this study, the continuous twisted PLLA yarns were produced using an electrospinning device consists of two oppositely charged nozzles. The electrospinning process was performed at different twist rates. The electrospun twisted yarns were drawn at different extension ratios of 50% and 100% and their morphological and mechanical properties of pos...

Madder is a natural colorant which is commonly applied with metal salts as a mordant to improve its affinity to fibers and color fastness. Madder produces an insoluble complex or lake in the presence of metal ions on mordanted fabric. In this study, wool fabric was pretreated with AgNPs (silver nanoparticles) as a mordant, then dyed with madder. Th...

Silver nanoparticles (AgNPs) have been synthesized for their antibacterial efficacy in various methods. Different methods have been used for stabilization of AgNPs which most of them are imperfect candidates for biological applications. Here we demonstrate a clean method for stabilizing of AgNPs that exhibit antibacterial function. Nanoparticles ha...

In this study, an in-situ approach was used to synthesise zinc oxide nanoparticles on the surface of cotton fabric. The effect of alkaline pre- and after-treatment and Zn2+ concentration was studied on the morphological, structural, thermal, photocatalytic, and antibacterial properties of loaded cotton fabrics. Scanning electron microscopy, energy...

In this paper, a brief survey is made on several studies made by the authors on improvement of antibacterial activity of cotton and wool textiles after plasma pretreatment. Acrylic acid was grafted on the surface of cotton using plasma technology as a means to enhance the loading efficiency of silver nanoparticles and impart antibacterial activity...

The aim of this study was to investigate the influence of oxygen plasma procedure at different time treatments on wool fiber using the micro-Raman spectroscopy as a non-destructive vibrational spectroscopic technique and Fourier transform infrared spectroscopy. The amide I and III regions, CC skeletal vibration region, and SS and CS bonds vibration...

The use of silver nanoparticle on various substrates has been widespread because of its good antibacterial properties that directly depend on the stability of the silver nanoparticles in a colloidal suspension. In this study, the colloidal solutions of the silver nanoparticles were synthesised by a simple and safe method by using lecithin as a stab...

ABSTRACT Silver nanoparticles (AgNPs) were synthesized with lecithin through a simple chemical reduction method. The prepared AgNPs/lecithin was then loaded into the wool fabric by exhaustion and pad-dry-cure methods. The surface morphology of the loaded wool fabrics was characterized by low-voltage scanning electron microscopy, and the loading eff...

The aim of this study was to evaluate the effect of oxygen plasma treatment on the surface roughness, morphology, chemical surface structure, crystallinity and tensile properties of wool fiber yarn. The wool fibers were treated with oxygen plasma at a different treatment time. The morphological surface characterization of wool fibers was realized a...

In this study, the antibacterial cotton fabric was prepared using zinc oxide/silicon dioxide (ZnO/SiO2) nanocomposite. The ZnO nanoparticles were synthesized with an in situ approach using two different methods on the cotton fabric. One of the methods was to synthesize ZnO nanoparticles into the prepared sol solution, and then coating on the cotton...

Nanofibrous hybrid yarns of polyvinyl alcohol (PVA) and poly-l-lactide acid (PLLA) with the antibacterial activity were prepared that contains 0, 5, 10, 20, and 30 wt.% of silver nanoparticles according to the PVA polymer content. This was performed by electrospinning using distilled water and 2, 2, 2-trifluoroethanol as a solvent for PVA and PLLA...

The paper describes the study of the photocatalytic oxidation and antibacterial properties of cotton fabric treated with zinc oxide-silver (ZnO-Ag) nanocomposites. The ZnO nanoparticles were synthesized by an in situ approach on the surface of activated cotton fibers seeded with Ag nanoparticles. The effect of Ag nanoparticle-seeding and synthesis...

In this study, the dyeing procedure of wool fibers with Prangos ferulacea was evaluated and optimized by response surface methodology (RSM). Using this method, the quantitive relationship between dye concentration of Prangos ferulacea, mordant concentration, dyeing temperature, and dyeing time on the dyeing procedure was investigated. The effect of...

Hydrophilization of wool fabrics was performed by silver nanoparticles with different surface charge using three different methods: exhausting, pad–dry–cure and in situ synthesis. Dynamic wetting measurements and surface topography analysis were used to evaluate surface changes on wool fabrics. The wool samples in situ loaded revealed the highest f...

Silver nanoparticles were synthesised on the modified cotton fibres using an in situ method. Acrylic acid was grafted on the surface of cotton using plasma technology as a means to enhance the loading efficiency of nanoparticles. The loading efficiency of silver nanoparticles into the cotton fabric was examined by an atomic absorption spectrometer....

Silver nanoparticles are being used increasingly in various applications due to their antibacterial properties. Cotton fiber can act as a template to stabilize and control the growth of silver nanoparticles. Silver nanoparticles were synthesized on cotton fibers by in situ method in presence of TiO 2 nanoparticles. Sodium Hypophosphite (SHP) (NaPO2...

Cotton fiber can act as a template to stabilize and control the growth of silver nanoparticles. Silver nanoparticles were synthesized on cotton fibers by in situ method in presence of TiO 2 nanoparticles. Sodium Hypophosphite (SHP) (NaPO 2 H 2) was used as a reducing agent. The surface of loaded cotton fabric was characterized by low voltage scanni...

The response surface method (RMS) was used to optimize the color strength (K/S) of the wool fibers dyed with Isatis tinctoria. The eight independent variable terms, in which two of them are categorical and the other six numerical, were selected at two levels (low and high). The ANOVA test results of the linear model showed that the model terms, inc...

Silver nanoparticles are being used increasingly in various applications because of their antibacterial properties. It is necessary to lower their direct contact with the skin by embedding in a polymer reducing their side effects. In this study, silver nanoparticles were synthesized inside the wool fibers acted as a polyfunctional ligands. Lecithin...

The environmental safe treatment methods were used to improve the penetrability of wool fibers with natural dye (Madder) in the presence of chemical and physical modified natural soybean lecithin. The dyeing conditions of wool fiber with madder were optimized by response surface methodology (RSM). The five independent variables were selected at low...

The antimicrobial property of stabilized silver nanoparticles (AgNPs) with phospholipid membrane was investigated on both Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) bacterial strains. The influence of phospholipid concentrations on antibacterial kinetics actions of AgNPs was studied with two different methodologies i...

Silver nanoparticles were synthesized and stabilized by a simple, environment-friendly method in a liposomes structure. Liposomes were prepared by facing lecithin to the aqueous-phase solutions while stirring vigorously. The ratio of lecithin concentration to silver nitrate (K(Lec/Ag) = [Lecithin]/[AgNO(3)]) is the influencing factor in the synthes...

Color strength of polyethylene terephthalate (PET) fabrics, which were constructed by microfibers, was can be increased by various pre and after treatment and also changing the condition of dyeing procedure. Alkali and plasma pretreatment on micro polyester fabric leave an insignificant effect on spectral reflectance of the treated colored fabric....

This review discusses the properties of liposomes and their role in the textile process, including textile preparation and dyeing. Liposomes have a surface activity effect due to a hydrophilic head group and hydrophobic hydrocarbon tail. Its preparations do not tend to foam, which advantageously distinguishes them from other textile auxiliaries. Ac...

The molecular interactions of polyacrylonitrile (PAN) and cellulose acetate (CA) were investigated thoroughly via dilute solution viscometry in dimethylformamide (DMF) as a common solvent at 30°C. The intrinsic viscosities and viscometric interaction parameters were experimentally determined for both binary (polymer/ dimethylformamide) and ternary...

Fibers containing both polyacrylonitrile (PAN) and cellulose acetate (CA) were prepared through wet-spinning by using N,N-dimethylformamide (DMF) as a solvent. Compatibility of PAN and cellulose acetate blend (PCB) fibers was investigated by means of scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and infrared (IR) spec...