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
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