Microphase separation and crystallization in binary blends consisting of poly(methyl methacrylate)-block-polystyrene copolymer and poly(vinylidene fluoride)

Seon Kim Ji, Kwang Hee Lee, Mu Jo Seong, Yeol Ryu Du, Kon Kim Jin

Research output: Contribution to journalArticle

1 Citation (Scopus)

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 microscope (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.

Original languageEnglish
Pages (from-to)509-518
Number of pages10
JournalPolymer (Korea)
Volume28
Issue number6
Publication statusPublished - 2004 Nov 1

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Polymers and Plastics
  • Materials Chemistry

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