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Determination of Binary Interaction Parameters for Ternary Polymer–Polymer–Solvent Systems Using Raman Spectroscopy

Gracia‐Medrano‐Bravo, Víctor‐Alfonso; Merklein, Lisa; Oberle, Nikolas; Batora, Manuel; Scharfer, Philip; Schabel, Wilhelm

Abstract:
Multilayer coatings and drying of polymer films are widely used to produce different applications like organic electronics or barrier foils. If the product quality requires separated layers, partial or immiscible systems can be used to avoid interdiffusion between the layers. For the prediction of a possible phase separation of a ternary polymer–polymer–solvent system, it is required to measure or obtain from a data bank the three binary interaction parameters of the system to describe its thermodynamic behavior. This poses a challenge due to the scarce data and measurement techniques for polymer–solvent interaction parameters, but even more for polymer–polymer interaction parameters. In this work, a numerical routine is developed to predict the phase separation for given interaction parameters and is validated with literature results. Subsequently, different ternary polystyrene–poly(methyl methacrylate)–toluene mixtures are prepared and the resulting composition of the phase (or phases) is measured via Raman spectroscopy. The determined equilibrium data are used to fit the binary interaction parameters, which can be used afterward as input parameters for the numerical routine in order to predict the ternary phase diagram of the system.

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Verlagsausgabe §
DOI: 10.5445/IR/1000120002
Veröffentlicht am 05.06.2020
Originalveröffentlichung
DOI: 10.1002/admt.202000149
Scopus
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Thermische Verfahrenstechnik (TVT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 2365-709X, 2365-709X
KITopen-ID: 1000120002
HGF-Programm 43.22.03 (POF III, LK 01) Printed Materials and Systems
Erschienen in Advanced materials technologies
Verlag Wiley
Seiten Article no: 2000149
Vorab online veröffentlicht am 04.06.2020
Nachgewiesen in Scopus
Web of Science
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