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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

✍ Scribed by Jing Sheng; Feng-kui Li; Jing Hu

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
167 KB
Volume
67
Category
Article
ISSN
0021-8995

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✦ Synopsis

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.

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