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Analysis of the isothermal crystallization of isotactic polypropylene nucleated with sorbitol derivatives
Author(s) -
Marco C.,
Ellis G.,
Gómez M. A.,
Arribas J. M.
Publication year - 2003
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.11935
Subject(s) - crystallization , tacticity , nucleation , materials science , isothermal process , sorbitol , polypropylene , polymer chemistry , chemical engineering , kinetics , thermodynamics , chemistry , polymerization , composite material , organic chemistry , polymer , physics , quantum mechanics , engineering
The isothermal crystallization kinetics of isotactic polypropylene (iPP) and iPP nucleated with the sorbitol derivatives 1,3:2,4‐bis(4‐methyldibenzylidene)sorbitol and 1,3:2,4‐bis(3,4‐dimethylbenzylidene)sorbitol was studied, along with the subsequent melting behavior, as a function of the nucleating agent concentration. The influence of the agents on the crystallization rate, crystallization temperature, and crystallization range was examined. The isothermal crystallization temperature increased, along with the crystallization rate, with increasing nucleating agent concentration. The maximum effect of the additives occurred at concentrations of 0.3% or greater. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 88: 2261–2274, 2003