The Crystallization Kinetics of Polypropylene/Organo Montmorillonite Nanocomposites Modified with Calcium Pimelate

Nattha Thanomchaem; Wunpen Chonkaew

doi:10.4028/www.scientific.net/AMR.747.749

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 747The Crystallization Kinetics of...

The Crystallization Kinetics of Polypropylene/Organo Montmorillonite Nanocomposites Modified with Calcium Pimelate

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 Kissingers 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.

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Periodical:

Advanced Materials Research (Volume 747)

Pages:

749-752

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.747.749

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Online since:

August 2013

Authors:

Nattha Thanomchaem, Wunpen Chonkaew

Keywords:

Crystallization Behavior, Differential Scanning Calorimeter (DSC), Polypropylene (PP)

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