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Effect of chain length on nanoscratching of polystyrene-A molecular dynamics study

  • Junjie Zhang*
  • , Junjie Du
  • , Fangda Xu
  • , Tao Sun
  • , Yongjian Tang
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In current study we perform molecular dynamics simulations of nanoscratching of amorphous polystyrene. The AIREBO potential is utilized to describe intermolecular and intramolecular interactions in simulated polystyrene system. In addition, the effect of chain length on the deformation behavior of polystyrene chains, force variation, and increment of temperature and potential energy is studied. Our simulations results demonstrate the permanent deformation of polystyrene during nanoscratching is governed by chain sliding and deformation of chain itself, i.e.. change in chain structure and rotation of phenyl group. There is strong chain length dependence of the mobility of the chain, which in turn affects deformation behavior of polystyrene and machining force. The influence of chain mobility on temperature and potential energy variations is also discussed.

Original languageEnglish
Title of host publication6th International Symposium on Advanced Optical Manufacturing and Testing Technologies
Subtitle of host publicationDesign, Manufacturing, and Testing of Smart Structures, Micro- and Nano-Optical Devices, and Systems
DOIs
StatePublished - 2012
Event6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Smart Structures, Micro- and Nano-Optical Devices, and Systems - Xiamen, China
Duration: 26 Apr 201229 Apr 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8418
ISSN (Print)0277-786X

Conference

Conference6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Smart Structures, Micro- and Nano-Optical Devices, and Systems
Country/TerritoryChina
CityXiamen
Period26/04/1229/04/12

Keywords

  • Polystyrene
  • molecular dynamics
  • nanoscratching

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