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Domain structure and miscibility studies of blends of styrene–butadiene–styrene block copolymers (SBS) and styrene–glycidyl methacrylate statistical copolymers (PS‐GMA) using SAXS and DMTA by LB Canto; IL Torriani; TS Plivelic; E Hage Jr; LA Pessan is a Materials Science article available to read on EtoBox.

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## Abstract The domain structure and miscibility in the solid state of a series of blends of styrene‐butadiene‐styrene (SBS) block copolymers and styrene‐glycidyl methacrylate (PS‐GMA) statistical copolymers with varying molecular weights and compositions were studied using small angle X‐ray scattering and dynamic mechanical thermal analysis. Depending on the molecular characteristics of each component, different types and degrees of solubilization of PS‐GMA in SBS were found which, in addition to the initially SBS phase morphology, lead to materials with multiphase domain morphologies with differences in size and structure. The degree of solubilization of PS‐GMA into the PS domains of SBS was found to be higher for blends containing PS‐GMA with lower molecular weight (__M__~w~ = 18 100 g mol^−1^) and lower GMA content (1 wt%) and/or for SBS with higher PS content (39 wt%) and longer PS blocks (__M__~w~ = 19 600 g mol^−1^). Localized solubilization of PS‐GMA in the middle of PS domains of SBS was found to be the most probable to occur for the systems under study, causing swelling of PS domains. However, uniform solubilization was also observed for SBS/PS‐GMA blends containing SBS w

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Author

LB Canto; IL Torriani; TS Plivelic; E Hage Jr; LA Pessan

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0959-8103)

Published

2006

Language

EN

Field

Materials Science (Physical Sciences)