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Orientation in uniaxially drawn polystyrene plasticized by CO 2 sorption
Author(s) -
Kajitani Takahiro,
Uosaki Yasuhiro,
Moriyoshi Takashi
Publication year - 1995
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.1995.070570508
Subject(s) - polystyrene , sorption , dichroic glass , orientation (vector space) , composite material , polymer chemistry , materials science , plasticizer , expanded polystyrene , chemistry , analytical chemistry (journal) , chemical engineering , polymer , organic chemistry , adsorption , geometry , mathematics , nanotechnology , engineering
Uniaxial drawing experiments of the polystyrene films plasticized by a sorption of compressed CO 2 gas at pressures up to about 18 MPa were carried out with strain rates ε of 0.0290 and 0.0079 s −1 . The drawing was performed successfully with draw ratio λ up to 4 at the temperatures of 308.15, 318.15, 328.15, and 338.15 K. The Hermans orientation function f of the drawn samples was determined from the dichroic ratio measured by an infrared spectrophotmeter. While f value increases with increasing ε or λ, it decreases with increasing CO 2 pressure or temperature. © 1995 John Wiley & Sons, Inc.