Nanoscale friction and wear of a polymer coated with graphene

被引：0
作者：
Vacher R. [1 ]
de Wijn A.S. [2 ]
机构：
[1] Corrosion and tribology, SINTEF, Richard Birkelands vei 2B, Trondheim
[2] Institutt for maskinteknikk og produksjon, NTNU, Richard Birkelands vei 2B, Trondheim
来源：
Beilstein Journal of Nanotechnology | 2022年 / 13卷
关键词：
Friction; Graphene; Molecular dynamics; Polymer;
D O I：
10.3762/BJNANO.13.4
中图分类号：
学科分类号：
摘要：
Friction and wear of polymers at the nanoscale is a challenging problem due to the complex viscoelastic properties and structure. Using molecular dynamics simulations, we investigate how a graphene sheet on top of the semicrystalline polymer polyvinyl alcohol affects the friction and wear. Our setup is meant to resemble an AFM experiment with a silicon tip. We have used two different graphene sheets, namely an unstrained, flat sheet, and one that has been crumpled before being deposited on the polymer. The graphene protects the top layer of the polymer from wear and reduces the friction. The unstrained flat graphene is stiffer, and we find that it constrains the polymer chains and reduces the indentation depth © 2022 Vacher and de Wijn; licensee Beilstein-Institut. License and terms: see end of document
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页码：63 / 73
页数：10
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