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Morphology, Crystallinity and Thermal Properties of Polyamide 66/Polyoxometalate Nanocomposites Synthesised Via an in situ Sol/Gel Process
Author(s) -
Cheval Nicolas,
Xu Fang,
Gindy Nabil,
Brooks Richard,
Zhu Yanqiu,
Fahmi Amir
Publication year - 2011
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201000443
Subject(s) - crystallinity , nanocomposite , materials science , crystallization , polyamide , chemical engineering , morphology (biology) , polymer chemistry , in situ , in situ polymerization , composite material , polymer , polymerization , chemistry , organic chemistry , biology , engineering , genetics
Abstract The in situ sol/gel synthesis of PA66/POM nanocomposites and their thermal and structural properties are reported. The morphology of POM and its influence on the crystallinity and thermal properties of PA66 have been investigated by means of SEM, TEM, DSC and XRD. The Liu and Kissinger models have been applied to study the non‐isothermal crystallisation kinetics and the crystallisation activation energy of the nanocomposite. The results reveal that polyoxometalates obtained in situ (5.5 nm) alter the thermal and crystallisation properties of PA66 significantly. The presence of POM leads to a thermodynamically more stable nanocomposite by reducing the amount of the metastable γ‐crystalline form of PA66.