Deformation behavior of Kevlar fibers studied by Raman spectroscopy | Zendy

Prasad Keshav | Zendy; Grubb David T. | Zendy

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Deformation behavior of Kevlar fibers studied by Raman spectroscopy

Author(s) -

Prasad Keshav,

Grubb David T.

Publication year - 1990

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.1990.070410923

Subject(s) - kevlar , raman spectroscopy , materials science , paracrystalline , composite material , deformation (meteorology) , stress (linguistics) , optics , crystallography , chemistry , composite number , linguistics , physics , philosophy

The tensile deformation of Kevlar fibers has been studied using Raman spectroscopy. The Raman bands shifted to lower wavenumbers and broadened with stress. The shift of the 1610 cm −1 Raman band per unit stress was about −2.5 cm −1 /GPa in both Kevlar 29 and Kevlar 49. A simple one phase paracrystalline model is used to explain the observed shifts. The total increase in the width of the 1610 cm −1 Raman band was about 2.5 cm −1 and the increase in width was negligible till a stress of about 0.5 GPa.

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