US EPA

6618829 

Journal Article 

Effects of the molecular structure of styrene-isoprene block copolymers on the interfacial characteristics of polystyrene/polyisoprene blends 

Jo, WH; Nam, KH; Cho, AC; , 

1996 

Yes 

Journal of Polymer Science. Part B, Polymer Physics
ISSN: 0887-6266 

JOHN WILEY & SONS INC 

NEW YORK 

34 

13 

2169-2175 

English 

10.1002/(SICI)1099-0488(19960930)34:13<2169::AID-POLB6>3.0.CO;2-R 

WOS:A1996VE10700010 

https://www.scopus.com/inward/record.uri?eid=2-s2.0-0030244087&doi=10.1002%2f%28SICI%291099-0488%2819960930%2934%3a13%3c2169%3a%3aAID-POLB6%3e3.0.CO%3b2-R&partnerID=40&md5=f91b300cbfeafc9e0073b71a79d6d8a5
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The effects of the molecular structure of the styrene-isoprene block copolymer on the interfacial tension, the morphology and the interfacial adhesion of polystyrene/polyisoprene were investigated. A reduction in interfacial tension is observed with the addition of a small amount of copolymer, followed by a leveling off as the copolymer concentration exceeds the critical micelle concentration. The reduction in interfacial tension between polystyrene and polyisoprene is more significant when the isoprene-rich diblock copolymer is added than the cases when the symmetric or styrene-rich diblock copolymer is added. The interfacial tension data seem to be consistent with the phase morphology and the interfacial adhesion: the lower the interfacial tension, the smaller the domain size of dispersed phase and the better the interfacial adhesion. (C) 1996 John Wiley & Sons, Inc. 

Block copolymers; Interfacial adhesion; Interfacial tension; Molecular structure; Morphology; Pendant drop method; Polymer interface