Effects of Shear Stress on Crystallization Behavior of Polylactide

doi:10.19491/j.issn.1001-9278.2016.06.015

China Plastics ›› 2016, Vol. 30 ›› Issue (06): 74-78 .DOI: 10.19491/j.issn.1001-9278.2016.06.015

Effects of Shear Stress on Crystallization Behavior of Polylactide

Received:2016-01-19 Revised:2016-03-12 Online:2016-06-26 Published:2016-06-26

Abstract

Abstract: The influences of shearing stress on crystallization behavior of polylactide (PLA) resin and casting sheet were investigated by changing heating and cooling circle times, aging time and temperature. It showed that the entanglement or the extent of relative order of PLA molecules affected the crystallization behavior. Under the influence of shearing stress, the disentanglement of PLA molecules happened or the extent of relative order increased, which made the cold crystallization process occur easier.

Key words: polylactide, thermal history, shear stress, crystallization

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Effects of Shear Stress on Crystallization Behavior of Polylactide

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