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Development of ion exchanger by modification of polypropylene fibre waste using radiation–induced graft polymerization of acrylamide and subsequent amination

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Title Development of ion exchanger by modification of polypropylene fibre waste using radiation–induced graft polymerization of acrylamide and subsequent amination
 
Creator Gupta, Bhuvanesh
Kanda, Vivek
Sethi, Puneet
Saxena, Shalini
 
Subject Acrylamide
Amination
Graft polymerization
Hoffmann degradation
Polypropylene
 
Description 431-437
Radiation-induced graft polymerization of acrylamide onto polypropylene fibre waste has been carried out using pre-irradiation technique to develop material with different degrees of grafting. The influence of reaction conditions, such as pre-irradiation dose, monomer concentration, reaction time and ferrous sulfate, on the degree of grafting has also been studied. The addition of ferrous sulfate beyond 0.4% concentration leads to the homopolymer free grafting reaction. The degree of grafting increases with the increase in monomer concentration, reaches maximum at 30% monomer concentration and then decreases with the further increase in the monomer concentration. A continuous increase in the grafting is achieved with the pre-irradiation dose. The replacement of the ferrous sulfate with acetone as an organic solvent causes complete homopolymer inhibition but a much lower graft levels as compared to the ferrous sulfate addition. The grafted fibre is subsequently aminated by Hoffmann degradation method and the fibre with a maximum ion exchange capacity up to
6.2 meq/g for a graft level of 198% is achieved. The modified fibre also shows excellent water uptake which increases as the degree of grafting increases.
 
Date 2008-12-16T07:07:19Z
2008-12-16T07:07:19Z
2008-12
 
Type Article
 
Identifier 0971-0426
http://hdl.handle.net/123456789/2605
 
Language en_US
 
Relation Int. Cl. ⁸ D06M14/00
 
Publisher CSIR
 
Source IJFTR Vol.33(4) [December 2008]