Effects of Functionalized Graphenes on the Isothermal Crystallization of Poly(L-lactide) Nanocomposites

Li-fen Zhao; Qi Li; Ru-liang Zhang; Xiu-juan Tian; Lei Liu

doi:10.1007/s10118-016-1732-5

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Effects of Functionalized Graphenes on the Isothermal Crystallization of Poly(L-lactide) Nanocomposites

Updated：2021-06-21

- Effects of Functionalized Graphenes on the Isothermal Crystallization of Poly(L-lactide) Nanocomposites
- Chinese Journal of Polymer Science Vol. 34, Issue 1, Pages: 111-121(2016)
- 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：
- DOI：10.1007/s10118-016-1732-5
  CLC：
- Received：19 July 2015，
  
  Revised：2015-09-19，
  
  Accepted：21 September 2015，
  
  Published：2016-01
- Accepted：
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Li-fen Zhao, Qi Li, Ru-liang Zhang, et al. Effects of Functionalized Graphenes on the Isothermal Crystallization of Poly(L-lactide) Nanocomposites[J]. Chinese Journal of Polymer Science, 2016, 34(1): 111-121.
DOI：

Li-fen Zhao, Qi Li, Ru-liang Zhang, et al. Effects of Functionalized Graphenes on the Isothermal Crystallization of Poly(L-lactide) Nanocomposites[J]. Chinese Journal of Polymer Science, 2016, 34(1): 111-121. DOI： 10.1007/s10118-016-1732-5.

摘要

Abstract

The effects of graphene oxide (GO) with polar groups and functionalized GO (fGO) with nonpolar groups on the isothermal crystallization of poly(

-lactide) (PLLA) were compared. Functionalized GO was obtained by grafting octadecylamine and characterized by FTIR

WAXD and TGA. Isothermal crystallization kinetics of PLLA/GO and PLLA/fGO nanocomposites were investigated by combining DSC data and Avrami equation. The results showed that fGO could improve PLLA crystallization rate more obviously than GO. By analyzing the morphology obtained from POM

SEM and TEM

it was found fGO with large layer space dispersed better in PLLA and supplied more nucleation sites than GO. Therefore

for the multilayer graphene

increasing the layer spaces is important to improve its dispersion in polymers

which will cause the crystal kinetics changing of polymers.

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