Tuning the Electrically Conductive Network of Grafted Nanoparticles in Polymer Nanocomposites by the Shear Field

Yan-Long Luo; Xiao-Hui Duan; Bin Li; Xian-Ling Chen; Yang-Yang Gao; Li-Qun Zhang

doi:10.1007/s10118-020-2467-x

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Tuning the Electrically Conductive Network of Grafted Nanoparticles in Polymer Nanocomposites by the Shear Field

ARTICLE | Updated：2020-08-11

- Tuning the Electrically Conductive Network of Grafted Nanoparticles in Polymer Nanocomposites by the Shear Field
- Tuning the Electrically Conductive Network of Grafted Nanoparticles in Polymer Nanocomposites by the Shear Field
- Chinese Journal of Polymer Science 2020年38卷第12期页码：1426-1434
- Affiliations：
  
  a.College of Science, Nanjing Forestry University, Nanjing 210037, China
  b.Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China
  c.State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
  d.School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
- Author bio：
  
  gaoyy@mail.buct.edu.cn
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (Nos. 51973012, 21704003, and 51903122), National 973 Basic Research Program of China (No. 2015CB654704), the Foundation for Innovative Research Groups of the NSF of China (No. 51521062). The authors acknowledge the National Supercomputer Center in Guangzhou, Lvliang, and Shenzhen.
- DOI：10.1007/s10118-020-2467-x
  中图分类号：
- 收稿：2020-05-12，
  
  修回：2020-6-1，
  
  录用：2020-6-1，
  
  网络首发：2020-08-11，
  
  纸质出版：2020-09-10
- Accepted：
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Luo, Y. L.; Duan, X. H.; Li, B.; Chen, X. L.; Gao, Y. Y.; Zhang, L. Q. Tuning the electrically conductive network of grafted nanoparticles in polymer nanocomposites by the shear field. Chinese J. Polym. Sci. 2020, 38, 1426–1434

Yan-Long Luo, Xiao-Hui Duan, Bin Li, et al. Tuning the Electrically Conductive Network of Grafted Nanoparticles in Polymer Nanocomposites by the Shear Field[J]. Chinese Journal of Polymer Science, 2020, 38(12): 1426-1434.
Luo, Y. L.; Duan, X. H.; Li, B.; Chen, X. L.; Gao, Y. Y.; Zhang, L. Q. Tuning the electrically conductive network of grafted nanoparticles in polymer nanocomposites by the shear field. Chinese J. Polym. Sci. 2020, 38, 1426–1434 DOI： 10.1007/s10118-020-2467-x.

Yan-Long Luo, Xiao-Hui Duan, Bin Li, et al. Tuning the Electrically Conductive Network of Grafted Nanoparticles in Polymer Nanocomposites by the Shear Field[J]. Chinese Journal of Polymer Science, 2020, 38(12): 1426-1434. DOI： 10.1007/s10118-020-2467-x.

摘要

Abstract

Controlling the formation of the conductive network in the polymer nanocomposites (PNCs) is very meaningful to enhance their electrical property. In this work

we investigated the effect of grafted nanoparticles (NPs) on the conductive probability of PNCs in the quiescent state as well as under the shear field

via

a coarse-grained molecular dynamics simulation. It is found that the smallest percolation threshold is realized at the moderate grafting density

the moderate length of grafted chains or the moderate interaction between grafted chains and free chains. Corresponding to it

the dispersion state of NPs varies from the contact aggregation to the uniform dispersion. By analyzing the connection mode among NPs

the probability of NPs which connect three other ones reaches the maximum value at their moderate dispersion state which is responsible for the optimal conductive probability. In addition

the main cluster size is characterized to better understand the conductive network which is consistent with the percolation threshold. It is interesting to find that the percolation threshold is smaller under the shear field than under the quiescent state. The shear field induces more NPs which connect three other ones. This benefits the formation of the new conductive network. Meanwhile

the anisotropy of the conductive probability is reduced with increasing the grafting density. In summary

this work provides a clear picture on how the conductive network of grafted NPs evolves under the shear field.

关键词

Keywords

references

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