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Study on the relaxation of polystyrene, ethylene–propylene diene monomer, and the blends of polystyrene with ethylene–propylene diene monomer by thermally stimulated current
Author(s) -
Sheng Jing,
Li Fengkui,
Hu Jing
Publication year - 1998
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/(sici)1097-4628(19980214)67:7<1199::aid-app5>3.0.co;2-b
Subject(s) - polystyrene , materials science , ethylene propylene rubber , epdm rubber , copolymer , monomer , polymer chemistry , natural rubber , styrene , ethylene , diene , polymer blend , composite material , polymer , organic chemistry , chemistry , catalysis
A thermally stimulated current (TSC) was used to study the relaxation of polystyrene (PS), the ethylene–propylene diene monomer (EPDM), and the grafted copolymer of EPDM with styrene (EPDM‐ g ‐St). The effect of the measuring conditions on the relaxation of PS is discussed. Some relaxation parameters of PS, EPDM, and EPDM‐ g ‐St were calculated in two different ways. In addition, the TSC spectra of PS/EPDM and PS/EPDM‐ g ‐St showed that PS/EPDM was an immiscible system, but there existed a special interaction between the plastic phase and the rubber one in PS/EPDM‐ g ‐St blends. The compatibility of PS blends was evaluated in terms of their compositions. The results of inverse gas chromatography (IGC) agreed well with those of the TSC measurements. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 67:1199–1204, 1998