期刊
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
卷 41, 期 22, 页码 2861-2869出版社
JOHN WILEY & SONS INC
DOI: 10.1002/polb.10608
关键词
montmorillonite; nanocomposites; crystallization; nylon; organoclay
Nylon-66 nanocomposites were prepared by melt-compounding nylon-66 with organically modified montmorillonite (MMT). The organic MMT layers were exfoliated in a nylon-66 matrix as confirmed by wide-angle X-ray diffraction (WAXD) and transmission electron microscopy. The presence of MMT layers increased the crystallization temperature of nylon-66 because of the heterogeneous nucleation of MMT. Multiple melting behavior was observed in the nylon-66/MMT nanocomposites, and the MMT layers induced the formation of form II spherulites of nylon-66. The crystallite sizes L-100 and L-010 of nylon-66, determined by WAXD, decreased with an increasing MMT content. High-temperature WAXD was performed to determine the Brill transition in the nylon-66/MMT nanocomposites. Polarized optical microscopy demonstrated that the dimension of nylon-66 spherulites decreased because of the effect of the MMT layers. (C) 2003 Wiley Periodicals, Inc.
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