Raman study of uniaxial deformation of single-crystal mats of ultrahigh molecular weight linear polyethylene

23rd International Laser Physics Workshop

Zavgorodnev, Yu.V.^1 ; Chvalun, S.N.^2 ; Nikolaeva, G.Yu.^3 ; Sagitova, E.A.^3 ; Pashinin, P.P.^3 ; Gordeyev, S.A.^4 ; Prokhorov, K.A.^3

MATT - Tsiolkovsky Russian State Technological University, 3 Orshanskaya St., Moscow

121552, Russia^1

Karpov Physico-Chemical Institute, 10 Obukh St., Moscow

105064, Russia^2

Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov St., Moscow

119991, Russia^3

UWI Technology Ltd, 3 Lochside Way, Edinburgh

EH12 9DT, United Kingdom^4

关键词: Deformation process;    Linear polyethylene;    Raman investigations;    Raman spectroscopic study;    Raman studies;    Ultra-high molecular weight;    Uniaxial deformation;    Uniaxial molecular orientation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/594/1/012010/pdf
DOI  :  10.1088/1742-6596/594/1/012010

来源: IOP

【 摘 要 】

We present for the first time a Raman spectroscopic study of the deformation process of solution-crystallized single-crystal mats of ultrahigh molecular weight linear polyethylene (UHMW PE). We study the deformed regions of the films, drawn only until the formation of the neck, and the films of much higher draw ratios, just before rupture starts. For comparison, we have also carried out Raman investigations of films produced by compression of UHMW PE powder. We have found that the uniaxial molecular orientation in the neck region of the single-crystal mat films develops more slowly as compared to the films, prepared by compression of the UHMW PE powder.