Novel jute yarns grafted with methyl methacrylate

Abstract

This research work involves graft copolymerization of jute fibers with methyl methacrylate (MMA), initiated by cerric ions, and optimization of the grafting parameters as a function of different polymerization conditions. It was considered to produce a hydrophobic jute fiber with enhanced properties. To achieve this, the effects of monomer concentration and grafting percentage on FTIR spectra, mechanical properties, moisture regain, oil-adsorption capacity, and surface morphology were investigated, and optimum percentage of MMA with reasonable properties was suggested. The results indicated that cerric ions initiated graft copolymerization of MMA onto jute with 30% of weight of monomers at optimum conditions of acid concentration and temperature. The FTIR studies proposed grafting of MMA onto jute at hydroxyl groups. The results showed that mechanical properties and moisture regain (%) of samples decrease with increasing of graft percentage. The most remarkable features of this investigation include reducing oil-adsorption capacity with increasing of lipophilic monomer percentages after one limitation.

Key differences on the compaction response of natural and glass fiber preforms in liquid composite molding

“…Furthermore, these natural fibers are highly hydrophilic as a consequence of their chemical composition. Many authors studied the effect of the distinctiveness on the mechanical properties of the fibers 14,15 and the composites. 16–20 Li et al 21 conducted a very interesting review on the processing by RTM of natural fiber based composites and their mechanical properties.…”

Chemically induced graft copolymerization of acrylonitrile onto lignocellulosic fibers

“…Among these methods, graft copolymerization is most extensively used for natural‐fiber surface modification. Many workers have carried out the graft copolymerizations of different monomers on various natural fibers with different initiator systems 18–24. Mishra et al25 studied the graft copolymerization of acrylonitrile onto sisal fibers in the presence of NaIO 4 and CuSO 4 as initiator systems in aqueous media.…”

“…Many workers have carried out the graft copolymerizations of different monomers on various natural fibers with different initiator systems. [18][19][20][21][22][23][24] Mishra et al 25 studied the graft copolymerization of acrylonitrile onto sisal fibers in the presence of NaIO 4 and CuSO 4 as initiator systems in aqueous media. The reaction medium, treatment time, initiator concentration, monomer concentration, and even fiber loading influenced the graft yield.…”

Application of laccases with cellulases on denim for clean effluent and repeatable biowashing

“…Another laccases application is the oxidative transformation or polymerization of dye precursors to improve dyeing efficiency. [6][7][8][9] The biodegradability of indigo and its industrial effluents by fungi have been studied with Phellinus gilvus, Phone Rochaete Chrysporiwn, Pvcnoporus sanguineus, and Pleurotus sajor-caju. Tests of immediate biodegradability have proved that indigo can be classified easily as biodegradable by fungi, and toxicity is greatly reduced.…”

“…Tests of immediate biodegradability have proved that indigo can be classified easily as biodegradable by fungi, and toxicity is greatly reduced. 9,10 The indigo degradation product is isatin (indole-2, 3-dione), which further decomposes to anthranilic acid (2-aminohenzoic acid). Oxidation of substrates by laccases was believed to involve the reduction of molecular oxygen.…”