Ultrasmall Nanoparticles Diluted Chain Entanglement in Polymer Nanocomposites

Sheng-Chao Chai; Tian-Yang Xu; Xiao Cao; Gang Wang; Quan Chen; Hao-Long Li

doi:10.1007/s10118-019-2262-8

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Ultrasmall Nanoparticles Diluted Chain Entanglement in Polymer Nanocomposites

ARTICLE | Updated：2021-02-18

- Ultrasmall Nanoparticles Diluted Chain Entanglement in Polymer Nanocomposites
- Chinese Journal of Polymer Science Vol. 37, Issue 8, Pages: 797-805(2019)
- Affiliations：
  
  a.State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
  b.State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- Author bio：
  
  qchen@ciac.ac.cn (Q.C.)
  hl_li@jlu.edu.cn (H.L.L.)
- Funds：
- DOI：10.1007/s10118-019-2262-8
  CLC：
- Received：01 February 2019，
  
  Revised：2019-3-12，
  
  Accepted：25 March 2019，
  
  Online First：25 April 2019，
  
  Published：2019-08
- Accepted：
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Citation: Chai, S. C.; Xu, T. Y.; Cao, X.; Wang, G.; Chen, Q.; Li, H. L. Ultrasmall nanoparticles diluted chain entanglement in polymer nanocomposites. Chinese J. Polym. Sci. 2019, 37, 797–805

Sheng-Chao Chai, Tian-Yang Xu, Xiao Cao, et al. Ultrasmall Nanoparticles Diluted Chain Entanglement in Polymer Nanocomposites[J]. Chinese Journal of Polymer Science, 2019, 37(8): 797-805.
Citation: Chai, S. C.; Xu, T. Y.; Cao, X.; Wang, G.; Chen, Q.; Li, H. L. Ultrasmall nanoparticles diluted chain entanglement in polymer nanocomposites. Chinese J. Polym. Sci. 2019, 37, 797–805 DOI： 10.1007/s10118-019-2262-8.

Sheng-Chao Chai, Tian-Yang Xu, Xiao Cao, et al. Ultrasmall Nanoparticles Diluted Chain Entanglement in Polymer Nanocomposites[J]. Chinese Journal of Polymer Science, 2019, 37(8): 797-805. DOI： 10.1007/s10118-019-2262-8.

摘要

Abstract

Nanoparticle-polymer composites exhibit unusual mechanical properties and chain dynamics when the nanoparticle size is smaller than the entanglement mesh size of the matrix polymer chains

corresponding to the ultrasmall regime defined by de Gennes. However

the mechanism is still ambiguous due to the lack of suitable model systems. Here

we develop an ultrasmall nanoparticle system by using a bimodal grafting strategy to graft both short alkyl chains and long polystyrene chains onto the polyoxometalate molecular nanoparticles with a tunable repulsive potential between the nanoparticles

thus facilitating their uniform dispersion in polystyrene matrices. Linear viscoelasticity of the resultant nanocomposites changes with increasing the filler content

which shows a decrease in both plateau modulus and terminal relaxation time

indicative of a dilution effect of the nanoparticles. Namely

the entanglement network becomes sparser with increasing the filler content.

关键词

Keywords

references

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