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Induction of Physico-Chemical and Thermal Resistance on Saccharum spontaneum L by Grafting Under Microwave Irradiation

Grafting of methylmethacrylate (MMA) with acrylamide (AAm), acrylonitrile (AN), and acrylic acid (AA) in binary mixtures onto Saccharum spontaneum L (Ss), was carried out under microwave radiation (MW). The maximum graft yield (88.9%) was found with AAm binary mixture. Synthesized graft co-polymers were characterized with FT-IR, scanning electron microscopy (SEM), TGA/DTA/DTG, and X-ray diffraction (XRD) techniques. Thermal stability of Ss-g-poly(MMA+AAm) was found to be higher than that of S. spontaneum fiber and other graft co-polymers. Percentage crystallinity and crystallinity index decreased (85.32 − 77.11 and 0.82 − 0.70, respectively) after grafting but graft copolymers exhibited more moisture, chemical and thermal resistance.