Preferential side chain scission of polytetrafluoroethylene by bending stress

Kaito Fujitani,Yuichi Utsumi,Akinobu Yamaguchi,Hirosuke Sumida,Satoru Suzuki

Applied Surface Science（2023）

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摘要

•Chemical composition of PTFE under bending stress observed by HAXPES and TFY-XAS.•Flexural tensile stress induced side-chain C-F cleavage and the conspicuous appearance of main-chain C–C on the surface.•Breaking of C-F bonds depends on tensile strain caused by bending.•Side chain scission via the force acting toward the center of the curvature owing to bending, which does not occur under uniaxial tensile stress.

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关键词

Polytetrafluoroethylene, PTFE, Bending stress, Tensile stress, HAXPES

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