Abstract
Introduction:Graft copolymerization is one of the most promising technique uses to modify the properties of naturally available polymers with a minimum loss in their native characteristics. Methods and Materials:Graft copolymerization is a very significant technique to add hybrid properties in backbone of polymers. The grafting generally initiated through the formation of free radical centers on the polymer backbone as well as monomer. Results:Grafted polysaccharides have various applications in different important scientific areas such as drug delivery, pharmaceutical field, plastic industry, waste water treatment, tannery effluent treatment, textile industry, agriculture area, etc. all of this fascinated us to summarize the major research articles over the last two decades outlining different methods of grafting, surface modification, graft copolymerization of synthetic and natural polymers. Conclusion:Various redox initiator systems viz. Ceric ammonium nitrate, per sulfate, Irradiation, FAS-H2O2 etc. is also explored for grafting of vinyl through conventional and non-conventional techniques.
Highlights
Graft copolymerization is one of the most promising technique uses to modify the properties of naturally available polymers with a minimum loss in their native characteristics
One of the most effective ways of modification of psyllium is by graft copolymerization with suitable monomers [8 - 10], and the properties of the grafted product can be suitably modulated in terms of percentage grafting
Reported that the tetracycline hydrochloride drug was released from the modified psyllium with polymethacrylamide polymeric networks by using N,N-MBAAm as crosslinker and ammonium persulfate (APS) as initiator which used in colon specific drug delivery
Summary
Graft copolymerization is one of the most promising technique uses to modify the properties of naturally available polymers with a minimum loss in their native characteristics. Some special types of polymers have high category as a very useful class of polymers and have their own special chemical properties and applications in various areas. Grafting of synthetic polymers onto natural polymers has invited great interest of many researchers because of their applications to biomedical and bio-degradable materials. It is one of the easy methods to increase the compatibility between synthetic polymers and natural polymer. Graft copolymerization is a significant technique to add the advanced properties of backbone polymers It is a chemical technique which modifies the desired features in natural fiber without affecting their inherent behavior. Graft copolymerization of vinyl monomers is a universal, effective and accessible method of chemical modification in grant molecules in natural polymer. Considerable work is done on graft co- polymerization of natural polysaccharide such as starch, chitosan, cellulose etc. with the vinyl monomers [12]
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