NON-ISOTHERMAL CRYSTALLIZATION OF ETHYLENE-VINYL ACETATE COPOLYMER CONTAINING A HIGH WEIGHT FRACTION OF GRAPHENE NANOSHEETS AND CARBON NANOTUBES

Huan Pang; Gan-ji Zhong; Jia-zhuang Xu; Ding-xiang Yan; Xu Ji; Zhong-ming Li; Chen Chen

doi:10.1007/s10118-012-1170-y

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NON-ISOTHERMAL CRYSTALLIZATION OF ETHYLENE-VINYL ACETATE COPOLYMER CONTAINING A HIGH WEIGHT FRACTION OF GRAPHENE NANOSHEETS AND CARBON NANOTUBES

PAPER | Updated：2023-01-03

- NON-ISOTHERMAL CRYSTALLIZATION OF ETHYLENE-VINYL ACETATE COPOLYMER CONTAINING A HIGH WEIGHT FRACTION OF GRAPHENE NANOSHEETS AND CARBON NANOTUBES
- Chinese Journal of Polymer Science Vol. 30, Issue 6, Pages: 879-892(2012)
- Affiliations：
  
  a.College of Polymer Science and Engineering and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
  b.Analytical and Testing Center, Sichuan University, Chengdu 610065, China
  c.College of Chemical Engineering, Sichuan University, Chengdu 610065, China
- Author bio：
  
  **Zhong-ming Li (李忠明), E-mail: zmli@scu.edu.cn
  Chen Chen (陈晨), E-mail: cdcc@scu.edu.cn
- Funds：
- DOI：10.1007/s10118-012-1170-y
  CLC：
- Received：19 March 2012，
  
  Revised：2012-04-09，
  
  Accepted：12 April 2011，
  
  Published：2012-11
- Accepted：
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Huan Pang, Gan-ji Zhong, Jia-zhuang Xu, et al. NON-ISOTHERMAL CRYSTALLIZATION OF ETHYLENE-VINYL ACETATE COPOLYMER CONTAINING A HIGH WEIGHT FRACTION OF GRAPHENE NANOSHEETS AND CARBON NANOTUBES[J]. Chinese Journal of Polymer Science, 2012, 30(6): 879-892.
DOI：

Huan Pang, Gan-ji Zhong, Jia-zhuang Xu, et al. NON-ISOTHERMAL CRYSTALLIZATION OF ETHYLENE-VINYL ACETATE COPOLYMER CONTAINING A HIGH WEIGHT FRACTION OF GRAPHENE NANOSHEETS AND CARBON NANOTUBES[J]. Chinese Journal of Polymer Science, 2012, 30(6): 879-892. DOI： 10.1007/s10118-012-1170-y.

摘要

Abstract

The effect of the different geometrical dimensionality of two dimensional graphene nanosheets (2D GNSs) and one dimensional carbon nanotubes (1D CNTs) on the non-isothermal crystallization of an ethylene-vinyl acetate (EVA) copolymer at high loading (5 wt%) was studied. Transmission electron microscopy indicated a homogeneous dispersion of GNSs and CNTs in EVA obtained by a solution dispersion process. Fourier-transform infrared spectroscopy and differential scanning calorimetry measurements showed that 1D CNTs and 2D GNSs acted as effective nucleating agents

with a noticeably increased onset crystallization temperature of EVA. A high weight fraction of nano-fillers slowed the overall crystallization rate of composites. At the same crystallization temperature

the crystallization behavior of GNS/EVA composites was slowed compared to that of the CNT/EVA ones owing to larger nucleus barrier and activation energy of diffusion. Dynamic mechanical relaxation and rheology behavior of CNT/EVA and GNS/EVA composites demonstrated that the planar structure of the GNSs had an intensively negative effect on EVA chain mobility due to interactions between nanofillers and polymer chains

as well as spatial restriction.

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