Miscibility and Isothermal Crystallization of Poly(L-lactide) and Poly(trimethylene carbonate) Blends

Li-fen Zhao; Jun Cheng; Xiu-juan Tian; Ru-liang Zhang

doi:10.1007/s10118-015-1604-4

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Miscibility and Isothermal Crystallization of Poly(L-lactide) and Poly(trimethylene carbonate) Blends

PAPER | Updated：2021-06-21

- Miscibility and Isothermal Crystallization of Poly(L-lactide) and Poly(trimethylene carbonate) Blends
- Miscibility and Isothermal Crystallization of Poly(L-lactide) and Poly(trimethylene carbonate) Blends
- Chinese Journal of Polymer Science 2015年33卷第3期页码：499-507
- Affiliations：
  
  School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
- Author bio：
  
  **Li-fen Zhao (赵丽芬), E-mail: lfzhao2009@126.com
- Funds：
  
  Shandong Province High School Science & Technology Fund Planning Project(J13LA52)
- DOI：10.1007/s10118-015-1604-4
  中图分类号：
- 收稿：2014-07-04，
  
  修回：2014-09-19，
  
  录用：2014-09-27，
  
  纸质出版：2015-03
- Accepted：
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Li-fen Zhao, Jun Cheng, Xiu-juan Tian, 等. Miscibility and Isothermal Crystallization of Poly(L-lactide) and Poly(trimethylene carbonate) Blends[J]. Chinese Journal of Polymer Science, 2015,33(3):499-507.

Li-fen Zhao, Jun Cheng, Xiu-juan Tian, et al. Miscibility and Isothermal Crystallization of Poly(L-lactide) and Poly(trimethylene carbonate) Blends[J]. Chinese Journal of Polymer Science, 2015, 33(3): 499-507.
Li-fen Zhao, Jun Cheng, Xiu-juan Tian, 等. Miscibility and Isothermal Crystallization of Poly(L-lactide) and Poly(trimethylene carbonate) Blends[J]. Chinese Journal of Polymer Science, 2015,33(3):499-507. DOI： 10.1007/s10118-015-1604-4.

Li-fen Zhao, Jun Cheng, Xiu-juan Tian, et al. Miscibility and Isothermal Crystallization of Poly(L-lactide) and Poly(trimethylene carbonate) Blends[J]. Chinese Journal of Polymer Science, 2015, 33(3): 499-507. DOI： 10.1007/s10118-015-1604-4.

摘要

Abstract

Miscibility

isothermal crystallization kinetics

and morphology of poly(L-lactide)/poly(trimethylene carbonate) (PLLA/PTMC) crystalline/amorphous blends were studied by differential scanning calorimetry (DSC) and optical microscopy (OM). The heterogeneity of OM images and an unchanged glass transition temperature showed that PLLA was immiscible with PTMC. During isothermal crystallization

the crystallization rate of PLLA improved when the PTMC content was low (≤ 20%). However

when the PTMC content was high (≥ 30%)

the crystallization rate decreased significantly. The reason of these nonlinear changes in crystal kinetics was analyzed according to the nucleation and growth process by virtue of a microscope heating stage. The isothermal crystallization morphologies of the blends were also studied by polarized optical microscopy and the results confirmed the conclusions obtained from crystallization kinetics.

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