Abstract
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 nanocompoeites, and the MMT layers induced the formation of form II spherulites of nylon-66. The crystallite sizes L100 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.
Original language | English |
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Pages (from-to) | 2861-2869 |
Number of pages | 9 |
Journal | Journal of Polymer Science, Part B: Polymer Physics |
Volume | 41 |
Issue number | 22 |
DOIs | |
Publication status | Published - 15 Nov 2003 |
Externally published | Yes |
Keywords
- Crystallization
- Montmorillonite
- Nanocomposites
- Nylon
- Organoclay
ASJC Scopus subject areas
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Polymers and Plastics
- Materials Chemistry