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Effect of mechanochemical degradation on gelation and mechanical properties of PVC
Author(s) -
Xu Xi,
Guo Shaoyun,
Wang Zeqiong
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(19970620)64:12<2273::aid-app2>3.0.co;2-i
Subject(s) - crystallinity , materials science , ultimate tensile strength , vinyl chloride , composite material , degradation (telecommunications) , fourier transform infrared spectroscopy , polyvinyl chloride , elongation , polymer , chemical engineering , copolymer , telecommunications , computer science , engineering
The effect of vibromilling or jet milling on gelation and mechanical properties of poly(vinyl chloride) (PVC) was studied through SEM, FTIR, DSC, and mechanical properties tests. The experimental results show that the size of the grain and apparent density of PVC are decreased. The grains become much more loosely aggregated and the crystallinity of PVC is decreased during milling. The extensional fracture of degraded PVC is obviously different from that of undegraded PVC, the tensile strength and degree of gelation of degraded PVC are increased as compared with undegraded PVC. The mechanical properties of PVC are improved quite a lot after blending it with a small amount of mechanochemically degraded PVC. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 64: 2273–2281, 1997