The crystallization kinetics of polypropylene/organo montmorillonite nanocomposites modified with calcium pimelate

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Publication Details

Author list: Thanomchaem N., Chonkaew W.

Publisher: Trans Tech Publications

Publication year: 2013

Volume number: 747

Start page: 749

End page: 752

Number of pages: 4

ISBN: 9783037857717

ISSN: 1022-6680

eISSN: 1662-8985

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884784085&doi=10.4028%2fwww.scientific.net%2fAMR.747.749&partnerID=40&md5=9083b32ea171cbbdfb41d383b968e9b8

Languages: English-Great Britain (EN-GB)

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Abstract

Polypropylene/organo montmorillonite nanocomposites modified with 0.001-0.1 wt% calcium pimelate, a β-nucleating agent, were prepared using twin screw extruder. The effects of calcium pimelate content on crystallization behavior were investigated using differential scanning calorimeter (DSC). The crystallization kinetics were studied using both nonisothermal and isothermal methods. The development of relative crystallinity with the crystallization time was analyzed by the Avrami equation. For nonisothermal studies, the Kissinger's theory was employed and the crystallization activation energy was calculated. The results showed that the crystallization temperature shifted to a higher temperature range when calcium pimelate was added. The alpha crystal form of polypropylene nanocomposite was suppressed, by the additions of calcium pimelate, while beta crystallization reaction was accelerated. © (2013) Trans Tech Publications, Switzerland.

Keywords

Crystallization behavior, Differential scanning calorimeter (DSC)