Small-Angle X-ray Scattering Analysis on the Estimation of Interaction Parameter of Poly(n-butyl acrylate)-b-poly(methyl methacrylate)

Sang In Lee, Min Guk Seo, June Huh, Hyun Jong Paik

Research output: Contribution to journalArticlepeer-review

Abstract

The temperature dependence of the Flory–Huggins interaction parameter (Formula presented.) for poly(n-butyl acrylate)-b-poly(methyl methacrylate) (PBA-b-PMMA) was quantified from small-angle X-ray scattering (SAXS) analysis using random phase approximation (RPA) theory. It was found from the (Formula presented.) estimation ((Formula presented.)) that the enthalpic contribution, (Formula presented.), a measure for temperature susceptibility of (Formula presented.), is 1.7–4.5 folds smaller for PBA-b-PMMA than for the conventional styrene-diene-based block copolymers, which have been widely used for thermoplastic elastomers. This finding suggests that these fully acrylic components can be a desirable chemical pair for constituting terpolymers applied for thermally stable and mechanically resilient elastomers.

Original languageEnglish
Article number5567
JournalPolymers
Volume14
Issue number24
DOIs
Publication statusPublished - 2022 Dec

Keywords

  • acrylic block copolymer
  • Flory–Huggins interaction parameter
  • small-angle X-ray scattering
  • thermoplastic elastomer

ASJC Scopus subject areas

  • Chemistry(all)
  • Polymers and Plastics

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