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

The temperature dependence of the Flory–Huggins interaction parameter [Formula: see text] 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...

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Detalles Bibliográficos
Autores principales: Lee, Sang-In, Seo, Min-Guk, Huh, June, Paik, Hyun-jong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9785592/
https://www.ncbi.nlm.nih.gov/pubmed/36559934
http://dx.doi.org/10.3390/polym14245567
Descripción
Sumario:The temperature dependence of the Flory–Huggins interaction parameter [Formula: see text] 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: see text] estimation ([Formula: see text]) that the enthalpic contribution, [Formula: see text] , a measure for temperature susceptibility of [Formula: see text] , 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.

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