期刊
FIBERS AND POLYMERS
卷 14, 期 10, 页码 1688-1698出版社
KOREAN FIBER SOC
DOI: 10.1007/s12221-013-1688-9
关键词
Polylactide (PLA); Polyamide elastomer (PAE); Miscibility; Crystallization kinetics; Physical aging
资金
- Open Project Program of State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Dong Hua University [LK1216]
- Public Technology Applied Research Projects of Science Technology Bureau of Shaoxing [2012B70009]
- Nantong Application Research Program [K2010030]
The PLA/PAE blends with four different weight ratios were prepared by melt mixing. PLA and PAE in PLA/PAE blends were almost immiscible while the weak interaction between PLA and PAE existed. The sub-micrometer PAE domains were dispersed in PLA matrix uniformly. The physical aging of PLA could be inhibited by introducing PAE. For PLA/PAE, the structure formed by physical aging at room temperature induced the accelerated crystallization of PLA during heating. However, for neat PLA, the tructure formed by physical aging had a negligible effect on the crystallization of PLA during heating. The isothermal crystallization kinetics of neat PLA and PLA/PAE were analyzed by Avrami theory. The values of Avrami exponent were within the range 2.1-3.0. The crystallization rate of PLA was enhanced significantly by addition of PAE.
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