Miscibility and Phase Separation in PMMA/SAN Blends Investigated by Nanoscale AFM-IR

The miscibility and phase separation of poly(methyl methacrylate) (PMMA) and styrene-acrylonitrile (SAN) have already been investigated using various methods. However, these methods have limitations that often result in inconsistent characterization. Consequently, the reasons for the dependence of m...

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Autores principales:	Julia Resch, Julia Dreier, Christian Bonten, Marc Kreutzbruck
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	PMMA/SAN blends miscibility phase separation nanoscale AFM-IR Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/4645c13c8841498ca2de8d67d2ba445a
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spelling	oai:doaj.org-article:4645c13c8841498ca2de8d67d2ba445a2021-11-11T18:47:56ZMiscibility and Phase Separation in PMMA/SAN Blends Investigated by Nanoscale AFM-IR10.3390/polym132138092073-4360https://doaj.org/article/4645c13c8841498ca2de8d67d2ba445a2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3809https://doaj.org/toc/2073-4360The miscibility and phase separation of poly(methyl methacrylate) (PMMA) and styrene-acrylonitrile (SAN) have already been investigated using various methods. However, these methods have limitations that often result in inconsistent characterization. Consequently, the reasons for the dependence of miscibility on composition as well as on processing temperature have not yet been proved. The phase separation of PMMA/SAN blends was therefore investigated for the first time using a novel technique, nanoscale AFM-IR. It couples nanoscale atomic force microscopy (AFM) with infrared (IR) spectroscopy. Therefore, the phase morphology can be chemically identified and precisely classified within the nm-regime. The PMMA/SAN blends, on the other hand, were analyzed of their changes in morphology under different thermal treatments. It was possible to visualize and define the phase separation, as well as dependence of the miscibility on the mixing ratio. In the miscible domain, no two individual phases could be detected down to the nanometer range. It was shown that with increasing temperature, the morphology changes and two different phases are formed, where the phase boundaries can be sharply defined. The onset of these changes could be identified at temperatures of about 100 °C.Julia ReschJulia DreierChristian BontenMarc KreutzbruckMDPI AGarticlePMMA/SAN blendsmiscibilityphase separationnanoscale AFM-IROrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3809, p 3809 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	PMMA/SAN blends miscibility phase separation nanoscale AFM-IR Organic chemistry QD241-441
spellingShingle	PMMA/SAN blends miscibility phase separation nanoscale AFM-IR Organic chemistry QD241-441 Julia Resch Julia Dreier Christian Bonten Marc Kreutzbruck Miscibility and Phase Separation in PMMA/SAN Blends Investigated by Nanoscale AFM-IR
description	The miscibility and phase separation of poly(methyl methacrylate) (PMMA) and styrene-acrylonitrile (SAN) have already been investigated using various methods. However, these methods have limitations that often result in inconsistent characterization. Consequently, the reasons for the dependence of miscibility on composition as well as on processing temperature have not yet been proved. The phase separation of PMMA/SAN blends was therefore investigated for the first time using a novel technique, nanoscale AFM-IR. It couples nanoscale atomic force microscopy (AFM) with infrared (IR) spectroscopy. Therefore, the phase morphology can be chemically identified and precisely classified within the nm-regime. The PMMA/SAN blends, on the other hand, were analyzed of their changes in morphology under different thermal treatments. It was possible to visualize and define the phase separation, as well as dependence of the miscibility on the mixing ratio. In the miscible domain, no two individual phases could be detected down to the nanometer range. It was shown that with increasing temperature, the morphology changes and two different phases are formed, where the phase boundaries can be sharply defined. The onset of these changes could be identified at temperatures of about 100 °C.
format	article
author	Julia Resch Julia Dreier Christian Bonten Marc Kreutzbruck
author_facet	Julia Resch Julia Dreier Christian Bonten Marc Kreutzbruck
author_sort	Julia Resch
title	Miscibility and Phase Separation in PMMA/SAN Blends Investigated by Nanoscale AFM-IR
title_short	Miscibility and Phase Separation in PMMA/SAN Blends Investigated by Nanoscale AFM-IR
title_full	Miscibility and Phase Separation in PMMA/SAN Blends Investigated by Nanoscale AFM-IR
title_fullStr	Miscibility and Phase Separation in PMMA/SAN Blends Investigated by Nanoscale AFM-IR
title_full_unstemmed	Miscibility and Phase Separation in PMMA/SAN Blends Investigated by Nanoscale AFM-IR
title_sort	miscibility and phase separation in pmma/san blends investigated by nanoscale afm-ir
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4645c13c8841498ca2de8d67d2ba445a
work_keys_str_mv	AT juliaresch miscibilityandphaseseparationinpmmasanblendsinvestigatedbynanoscaleafmir AT juliadreier miscibilityandphaseseparationinpmmasanblendsinvestigatedbynanoscaleafmir AT christianbonten miscibilityandphaseseparationinpmmasanblendsinvestigatedbynanoscaleafmir AT marckreutzbruck miscibilityandphaseseparationinpmmasanblendsinvestigatedbynanoscaleafmir
_version_	1718431698428887040

Miscibility and Phase Separation in PMMA/SAN Blends Investigated by Nanoscale AFM-IR

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