Graft copolymerization of acrylonitrile and methacrylonitrile onto gelatin by mutual irradiation method

Abstract

SYNOPSISIn order to improve upon certain properties of gelatin graft copolymerization of acrylonitrile ( A N ) and methacrylonitrile (MAN) onto gelatin has been studied in aqueous medium using y rays as a source of initiation. Optimum conditions for affording maximum percentage of grafting have been evaluated as a function of various reaction parameters. The grafted polyacrylonitrile (PAN) was isolated from the graft copolymer by acid hydrolysis, and the average molecular weight ( M u ) of the isolated polymer has been determined viscometrically. The graft copolymers were characterized by IR spectroscopic methods and thermogravimetric analysis (TGA) . Acrylonitrile was found to be more reactive than methacrylonitrile toward graft copolymerization.

Graft copolymerization of methyl methacrylate onto gelatin using KMnO4‐H2SO4 redox system

“…Vinyl monomers such as methacrylonitrile, 1 acrylonitrile, 1,4 methyl acrylate, 9 butyl acrylate, 10 and ethyl acrylate 11 can be grafted onto gelatin by various techniques. There are also some studies concerned with grafting methyl methacrylate (MMA) onto gelatin in the literature.…”

“…Graft copolymerization is one of the methods to improve the properties of the natural [1][2][3][4] and synthetic polymers. [5][6][7][8] When using graft copolymerization, it is a goal that the host polymer gains some of the desired properties of monomer(s) used for grafting.…”

Development and assessment of the advanced graft copolymers obtained from Hibiscus sabdariffa biomass

“…X-ray diffraction studies were performed on X-ray diffractometer (Bruker D8 Advance) under ambient conditions using Cu Ka (1.5418 Å ) radiation, Ni-filter and scintillation counter as detector at 40 KV and 40 mA on rotation between 13 (2y) and 25 (2y) at 1s accumulation time and step size of 0.01 with 0.5 or 1.0 mm of divergent and antiscattering slit. Each sample was homogenously mixed and mounted on PMMA holder.…”

“…1-10 Misra et al have extensively studied the modification of natural and synthetic fibers such as wool, 11,12 gelatin, 13,14 poly(vinyl alcohol), 15,16 rayon, and polyamide-6. 17 The potential applications of graft copolymerization could be immensely increased by selecting various initiators like ceric ammonium nitrate (CAN), potassium per sulphate (KPS), and ammonium per sulphate (APS).…”

Synthesis, characterization, and evaluation of novel Hibiscus sabdariffa‐g‐poly(EA) copolymer

“…Because natural fibers occur in abundance in nature and are renewable resource, various workers have focused on the graft copolymerization of different cellulosic backbones using vinyl monomers through various chemical and radiation techniques. [1][2][3][4][5][6][7][8][9][10] Misra and co workers 11,12 have extensively studied the modification of natural and synthetic fibers such as wool, gelatin, 13,14 poly(vinyl alcohol), 15,16 rayon, and polyamide-6. 17 The potential applications of graft copolymerization could be immensely increased by selecting various initiators such as ceric ammonium nitrate (CAN), potassium per sulfate, and ammonium per sulfate.…”