US EPA

6666928 

Journal Article 

Copolymerization of glycidyl methacrylate with styrene and applications of the copolymer as paper-strength additive 

Zhang, XM; Tanaka, H; , 

2001 

Yes 

Journal of Applied Polymer Science
ISSN: 0021-8995
EISSN: 1097-4628 

JOHN WILEY & SONS INC 

NEW YORK 

80 

3 

334-339 

English 

10.1002/1097-4628(20010418)80:3<334::AID-APP1104>3.0.CO;2-H 

WOS:000167228200003 

https://www.scopus.com/inward/record.uri?eid=2-s2.0-0035313288&doi=10.1002%2f1097-4628%2820010418%2980%3a3%3c334%3a%3aAID-APP1104%3e3.0.CO%3b2-H&partnerID=40&md5=32081ebb28a8eac9adc3ff0e962b73de
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A copolymer of glycidyl methacrylate and styrene (PGS) was synthesized by emulsion polymerization. The effect of the polymer on paper dry- and wet-strength improvement was investigated. The polymer contains phenyl groups that provide hydrophobic character to fibers so as to improve paper wet performance, and glycidyl groups that react with nucleophilic groups in fibers and other polymers to increase paper strength. Results showed that other polymers, such as polyallylamine, polyacrylic acid, and modified polyacrylamide, could be used together with PGS for paper-strength improvement. Furthermore, three kinds of partially carboxymethylated pulps (CMP) were prepared and used for PGS treatment. Compared with original pulp sheet, the sheets containing CMPs were strengthened greatly both in dry and in wet strength after PGS treatment. It was confirmed that higher CMP content got higher strength improvement at the same addition level of PGS. The results showed that carboxyl groups in pulp participate in the reaction with PGS and the cocrosslinkings between fibers and polymers were formed for improving paper strength. (C) 2001 John Wiley & Sons, Inc.