Effect of a polystyrene-polyisoprene diblock layer on the adhesion between polystyrene and polyisoprene

The adhesion between polystyrene and crosslinked polyisoprene homopolymers was found to be increased by the presence of a thin layer of polystyrene-polyisoprene block copolymer at the interface. The interfacial toughness was a function of both the layer thickness and molecular weight of the copolyme...

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Bibliographic Details
Published in:Polymer (Guilford) 1993, Vol.34 (11), p.2289-2296
Main Authors: Reichert, Werner F., Brown, Hugh R.
Format: Article
Language:English
Subjects:
adhesion
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
polyisoprene
polystyrene
Properties and characterization
Surface properties
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Summary:The adhesion between polystyrene and crosslinked polyisoprene homopolymers was found to be increased by the presence of a thin layer of polystyrene-polyisoprene block copolymer at the interface. The interfacial toughness was a function of both the layer thickness and molecular weight of the copolymer. If the homopolyisoprene was crosslinked before the joint was made, the joint failed at a relatively low toughness by the polyisoprene of the diblock pulling out of the polyisoprene homopolymer. Joints that failed by pull-out could be reformed by contact at room temperature. A high degree of interfacial toughness was found when the homopolymer and copolymer polyisoprene were crosslinked together.
ISSN:0032-3861
1873-2291
DOI:10.1016/0032-3861(93)90810-W