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Modeling of effective crosslinking density of the gel in free‐radical copolymerization of vinyl/divinyl monomers
Author(s) -
Luo Yingwu,
Weng Zhixue,
Huang Zhiming,
Pan Zuren
Publication year - 1997
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19970531)64:9<1691::aid-app4>3.0.co;2-a
Subject(s) - copolymer , polymer chemistry , monomer , vinyl chloride , materials science , swelling , polymer , radical polymerization , polymerization , chemical engineering , composite material , engineering
The concept of effective crosslinking density proposed by Scanlan is extended to heterogeneously crosslinking polymer. A kinetic‐statistical model of effective crosslinking density of the gel is developed in free‐radical heterogeneously crosslinking polymerization. The model is applied to the vinyl chloride (VC)/dially phthalate (DAP) suspension process. It is concluded that the model successfully predicts the development of effective crosslinking density of the gel. It is suggested that the degree of swelling of the gel is determined by its effective crosslinking density. However, when the crosslinking density is high, the physical entanglements would greatly influence the degree of swelling. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 64: 1691–1699, 1997