Crystallization and Melting Behaviors of Polylactic Acid/Thermoplastic Polyurethane Blends

Tien Wei Shyr; Jung Yang; Chun Chieh Hu; Jian Ren Wang; Chia Hsin Tung

doi:10.4028/www.scientific.net/AMR.627.156

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 627Crystallization and Melting Behaviors of...

Crystallization and Melting Behaviors of Polylactic Acid/Thermoplastic Polyurethane Blends

Abstract:

A series of blends were prepared by different ratios of polylactic acid (PLA) and thermoplastic polyurethane (TPU) with a crosslinking agent of dicumyl peroxide (DCP). This study focused on the crystal structure, morphology, crystallization, and melting behaviors of PLA/TPU blends using a wide angle x-ray diffractometer (WAXD), a polarizing optical microscope (POM) and a differential scanning calorimeter (DSC). A Modified Avrami equation was applied to analyze non-isothermal crystallization kinetics of PLA/TPU blends. Results show that the nucleation of PLA was enhanced by the added TPU. The spherulitic growth rate, crystallization rate, and crystallinity of the PLA/TPU blends increased with an increase of TPU content. WAXD results show that all of the crystal reflections of PLA/TPU blends related to those of PLA.

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Periodical:

Advanced Materials Research (Volume 627)

Pages:

156-159

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.627.156

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Online since:

December 2012

Authors:

Tien Wei Shyr, Jung Yang, Chun Chieh Hu, Jian Ren Wang, Chia Hsin Tung

Keywords:

Cold Crystallization, Polylactic Acid /thermoplastic Polyurethane Blends

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