Slow Down Dewetting in Polymer Films by Isocyanate-treated Graphite Oxide

Yong Zhou; Pei Bai; Miao Huo; Yu-Jie Chen; Hua Li; Hong-Mei Kang; He-Zhou Liu; Yun-Long Guo

doi:10.1007/s10118-018-2147-2

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Slow Down Dewetting in Polymer Films by Isocyanate-treated Graphite Oxide

ARTICLE | Updated：2021-02-18

- Slow Down Dewetting in Polymer Films by Isocyanate-treated Graphite Oxide
- Chinese Journal of Polymer Science Vol. 36, Issue 9, Pages: 1070-1076(2018)
- Affiliations：
  
  a.The State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
  b.School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  c.University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China
- Author bio：
  
  yunlong.guo@sjtu.edu.cn
- Funds：
- DOI：10.1007/s10118-018-2147-2
  CLC：
- Received：25 December 2017，
  
  Revised：2018-2-28，
  
  Accepted：01 May 2018，
  
  Online First：01 June 2018，
  
  Published：2018-09
- Accepted：
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Yong Zhou, Pei Bai, Miao Huo, et al. Slow Down Dewetting in Polymer Films by Isocyanate-treated Graphite Oxide[J]. Chinese Journal of Polymer Science, 2018, 36(9): 1070-1076.
DOI：

Yong Zhou, Pei Bai, Miao Huo, et al. Slow Down Dewetting in Polymer Films by Isocyanate-treated Graphite Oxide[J]. Chinese Journal of Polymer Science, 2018, 36(9): 1070-1076. DOI： 10.1007/s10118-018-2147-2.

摘要

Abstract

Isocyanate-treated graphite oxides (

GOs) were well-dispersed into the polystyrene (PS) thin films and formed a novel network structure. With control in fabrication

GOs-web layer was horizontally embedded near the surface of the films and thus formed a composite slightly doped by

GOs. This work demonstrated that the

GOs network can remarkably depress the dewetting process in the polymer matrix of the composite

while dewetting often leads to rupture of polymer films and is considered as a major practical limit in using polymeric materials above their glass transition temperatures (

Via

annealing the 50–120 nm thick composite and associated neat PS films at temperatures ranging from 35 °C to 70 °C above

surface morphology evolution of the films was monitored by atomic force microscopy (AFM). The

GOs-doped PS exhibited excellent thermal stability

i.e.

the number of dewetting holes was greatly reduced and the long-term hole growth was fairly restricted. In contrast

the neat PS film showed serious surface fluctuation and a final rupture induced by ordinary dewetting. The method developed in this work may pave a road to reinforce thin polymer films and enhance their thermal stability

in order to meet requirements by technological advances.

关键词

Keywords

references

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