Mechanical and thermal properties of glycidyl methacrylate grafted cotton cellulose

Abstract

SYNOPSISUV-radiation-induced graft-copolymerization of cotton cellulose was carried out with glycidyl methacrylate (GMA) using ceric ammonium nitrate (CAN) as a photoinitiator as well as a chemical initiator. With increase in the graft add-on, breaking load and moisture regain of cotton decreased, so also its thermal stability. The fiber surface changes due to grafting were ascertained by X-ray diffraction and scanning electron microscopy. 0 1995

Reactivity ratios during radiation‐induced grafting of comonomer mixtures onto polyester fabrics

“…Graft copolymerization onto natural and synthetic polymers of binary mixtures of vinyl monomers having different functional groups is of special importance with respect to simple grafting of individual monomers 1–5. This is because grafting of monomer mixtures has the advantage of introducing different types of polymer moieties with different properties.…”

Adsorption of chromium (VI) from aqueous solutions by cellulose modified with β-CD and quaternary ammonium groups

“…The exothermic peak at 350 • C is due to some reactions of the epoxy group. The degradation of poly(GMA) occurs at 360 • C at first and completely at 435 • C [20]. The endothermic peak of DTA curve at 250 • C is due to the fusion of the Cell-g-GMA-␤-CDN + and epoxy groups grafted [21,22].…”

Bacterial cellulose nanowhiskers to enhance the properties of plastics and bioplastics of interest in food packaging

“…As BCNW were intended for use as nanofillers in conventional plastic matrices, it was important to determine the degradation temperature of the material to define the temperature range in which the nanofiller could be processed without suffering thermal degradation. PGMA was grafted onto cotton cellulose (Shukla & Athalye, 1995) and nanofibrillated cellulose (Littunen et al, 2011).…”

“…Surface chemical modification by reaction of the hydroxyl groups present on the surface of cellulose nanocrystals with organomodifying agents has been proposed as one approach to overcome this shortcoming. In this regard, CNW have been successfully modified by acetylation (Goffin et al, 2011a;Sassi & Chanzy, 1995;Tomé et al, 2011), oxidation (Cao et al, 2012;Montanari et al, 2005), silanization (Goussé et al, 2002;Pei et al, 2010;Raquez et al, 2012) and polymer grafting reactions (Cao et al, 2009;Goffin et al, 2011a, b;Littunen et al, 2011;Shukla & Athalye, 1995) and incorporation of modified CNW into polymeric matrixes, such as PLA has also been reported (Goffin et al, 2011a;Lin et al, 2011;Pei et al, 2010;Raquez et al, 2012;Tomé et al, 2011).…”

“…The epoxy group in the GMA chains was expected to react with the carboxylic group of PLA, thus promoting interfacial adhesion between BCNW and the polyester matrix. While cellulose modification by graft copolymerization of (GMA) has been reported (Littunen et al, 2011;Shukla & Athalye, 1995), information on the incorporation of the grafted filler into polymeric matrixes is lacking. The morphology, thermal properties, oxygen barrier, water affinity and mechanical properties of BCNW and BCNW-PGMA loaded PLA nanocomposites were investigated and compared to determine the influence of surface modification on the nanocomposites performance.…”