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Comparative study of orientation in hot‐drawn poly(ethylene terephthalate) by means of refractive index and microhardness measurements
Author(s) -
Lorenzo V.,
Pereña J. M.
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.1990.070390705
Subject(s) - indentation hardness , materials science , refractive index , composite material , anisotropy , refractometer , birefringence , deformation (meteorology) , polymer , optics , polymer chemistry , optoelectronics , microstructure , physics
Refractive index and microhardness of drawn samples of poly(ethylene terephthalate) were measured by means of an Abbé refractometer and a microindentation hardness equipment. The optical and mechanical anisotropies determined from these measurements were compared with the birefringences obtained by using compensators and fitted to the affine deformation scheme, showing that microhardness anisotropy is a suitable technique for studying the overall orientation in polymers.