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题名: Crystallization of equimolar poly(L-lactide)/poly(D-lactide) blend below the melting point of alpha crystals under shear
作者: Song, Yan1; Zhang, Xiuqin2; Yin, Yongai1; Zhang, Chunbo1; de Vos, Sicco3; Wang, Ruyin4; Joziasse, Cornelis A. P.3; Liu, Guoming1; Wang, Dujin1
关键词: Poly(lactic acid) ; Stereocomplex ; Shear ; Crystallization kinetics
刊名: EUROPEAN POLYMER JOURNAL
发表日期: 2016-02-01
卷: 75, 页:93-103
收录类别: SCI
英文摘要: The isothermal crystallization behavior of a 1:1 poly(L-lactide)/poly(D-lactide) (PLLA/PDLA) mixture under pulsed shear was investigated by in-situ polarized light optical microscopy (POM) and wide angle X-ray scattering (WAXS). The effects of shear rate and temperature were studied. The results showed that application of shear flow increased the nucleation density, crystallization rate and degree of orientation for both stereocomplex crystals (SC) and alpha crystals. Interestingly, when the crystallization temperature was below the melting temperature of a crystals, the phase content of SC increased with shear rate, while the a content displayed a bell-shaped curve with regard to shear rate. The structure formation in this system was closely related to the shear-induced nucleation, phase mixing and chain mobility. (C) 2015 Elsevier Ltd. All rights reserved.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35832
Appears in Collections:工程塑料实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
2.Beijing Inst Fash Technol, Sch Mat Sci & Engn, Beijing 100029, Peoples R China
3.Corb Purac, POB 21, NL-4200 AA Gorinchem, Netherlands
4.Corb Purac China, Unit 08 09, 30F 6088 Humin Rd, Shanghai 201199, Peoples R China
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