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Structure and properties of phase boundaries in block copolymers

✍ Scribed by Gronski, Wolfram ;Annighöfer, Frank ;Stadler, Reimund

Publisher
Wiley (John Wiley & Sons)
Year
1984
Weight
512 KB
Volume
6
Category
Article
ISSN
0025-116X

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✦ Synopsis

A method is described to prepare poly(isoprene-b-(isoprene-co-styrene+-b-styrene) three-block copolymers in which the interphase thickness is varied by the molecular weight of a random copolymer center block. The interphase width was determined by electron microscopy, small angle X-ray scattering and dynamic mechanical measurements. In addition a report is given on the influence of internal phase boundaries on strain induced crystallization of partially hydrogenated poly(styrene-b-1,4butadiene-b-styrene) elastomers which were studied by stress relaxation experiments in dependence of molecular weight.

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