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Water-superabsorbent polymers through gamma radiation-induced graft-copolymerization of acrylonitrile on guargum

โœ Scribed by H. T. Lokhande; P. V. Varadarajan; Vatsala Iyer

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
379 KB
Volume
45
Category
Article
ISSN
0021-8995

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โœฆ Synopsis

Superabsorbent polymers based on guargum have been prepared through a graft-copolymerization reaction using acrylonitrile as the monomer by a gamma ray-induced irradiation technique. Various grafting parameters have been studied. The grafted products have been characterized using infrared spectroscopy, thermogravimetric, and differential thermal analysis. The thermograms reveal the superior thermal stability of the grafted product over the control a t all stages of its degradative cycle. The maximum absorbency obtained of the superabsorbent product was around 300 g/g.

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## SYNOPSIS Methyl methacrylate was grafted onto polypropylene films using gamma radiation. Effects of different parameters, such as radiation dose, inhibitor concentration, monomer concentration, and type of solvents on the graft yield were investigated. It was established that the graft yield de