[KSCI] Korea Science Citation Index Service

Microphase Separation and Crystallization in Binary Blends Consisting of Poly (methyl methacrylate)-block-Polystyrene Copolymer and Poly (vinylidene fluoride)

김지선 (인하대학교 나노시스템공학부)
이광희 (인하대학교 나노시스템공학부)
조성무 (KIST 고분자하이브리드연구센터)
류두열 (포항공과대학교 화학공학과)
김진곤 (포항공과대학교 화학공학과)

Publication Information

Polymer(Korea) / v.28, no.6, 2004 , pp. 509-518 More about this Journal

Abstract

Microdomain structures and crystallization behavior of the binary blends consisting of an asymmetric block copolymer and a homopolymer were investigated using small-angle X-ray scattering (SAXS), optical micro scope (OM) and differential scanning calorimetry (DSC). Poly(methyl methacrylate)-block-polystyrene block copolymer (PMMA-b-PS) (weight fraction of PMMA =0.53) was mixed with low molecular weight poly(vinylidene fluoride) (PVDF). As the PVDF concentration was increased, the morphological change from a lamellar to a cylindrical structure occurred. The crystallization of PVDF significantly disturbed the orientation of the pre-existing microdomain structure, resulting in a poorly ordered morphology. In the blends, PVDF exhibited unique crystallization behavior due to the PMMA block which is preferentially miscible to PVDF and the space constraint imposed by the microdomains.

Keywords

block copolymer; homopolymer; blend; microphase separation; crystallization;

Citations & Related Records

Times Cited By Web Of Science : 1 (Related Records In Web of Science)
Times Cited By SCOPUS : 0

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