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Isothermal crystallization of PP‐ g ‐GMA copolymer
Author(s) -
Yin Zhihui,
Zhang Yalie,
Zhang Xiaomin,
Yin Jinghua
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(19970321)63:12<1565::aid-app7>3.0.co;2-m
Subject(s) - copolymer , crystallization , materials science , isothermal process , polymer science , polymer chemistry , chemical engineering , thermodynamics , composite material , polymer , physics , engineering
The overall isothermal crystallization kinetics for neat polypropylene and grafted polypropylene systems were investigated. The rate constants were corrected assuming the heterogeneous nucleation and three dimensional growth of polypropylene spherulites. A semiempirical equation for the radial growth rate of polypropylene spherulites was developed as a function of temperature, and was used to determine the number of effective nuclei of different temperatures. The number of nuclei in grafted samples was estimated to be 10 2 –10 3 times larger than that of neat polypropylene. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 63: 1565–1569, 1997