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Morphology development and non‐isothermal crystallization behavior of polyamide 11/ethylene‐vinyl alcohol blends
Author(s) -
Li Yingchun,
Hu Guosheng,
Wang Biaobing
Publication year - 2010
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.32495
Subject(s) - crystallization , polyamide , vinyl alcohol , materials science , morphology (biology) , scanning electron microscope , lamellar structure , chemical engineering , isothermal process , polymer chemistry , ethylene , composite material , polymer , chemistry , organic chemistry , catalysis , thermodynamics , physics , biology , engineering , genetics
High‐barrier polyamide 11 (PA11) was prepared by in situ co‐crosslinking technology using ethylene‐vinyl alcohol (EVOH) as the barrier layer, and the morphology development and non‐isothermal crystallization behavior were investigated. The scanning electron microscope (SEM) observations demonstrated that the morphology development was greatly dependent on the concentration of dicumyl peroxide (DCP). A pronounced lamellar morphology was obtained at 1.5% DCP loading level. The analysis of non‐isothermal crystallization kinetics indicated that the addition of EVOH and DCP affected the crystallization mode of PA 11. Notably, the crystallization rate of PA 11 was related with the morphology of EVOH and the interaction between EVOH and PA 11. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010