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Radiation stability of PTFE with different crystallinity
Author(s) -
Zhong Xiaoguang,
Yu Li,
Zhao Wenwei,
Zhang Yuefang,
Sun Jiazhen
Publication year - 1993
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/app.1993.070480416
Subject(s) - crystallinity , polytetrafluoroethylene , materials science , bond cleavage , polymerization , polymer chemistry , composite material , radiation , chain scission , polymer , chemistry , organic chemistry , optics , physics , catalysis
Abstract In this work, the effects of radiation on polytetrafluoroethylene (PTFE) samples with different crystallinity were studied. Using Suwa's equation for calculating the number‐average molecular weight of PTFE, the radiation‐induced reduction in molecular weight was followed and the G values of scission of PTFE were also obtained on the basis of the changes in molecular weight. The G (scission) for as‐polymerized PTFE was 2.15 ± 0.01, whereas for sintered sample, which has a relative low crystallinity, G (scission) = 6.0 ± 0.14. © 1993 John Wiley & Sons, Inc.