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Emulsion templated poly(thiol-enes): selective oxidation improves mechanical properties
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SYSNO ASEP 0569582 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Emulsion templated poly(thiol-enes): selective oxidation improves mechanical properties Author(s) Hobiger, V. (SI)
Koler, A. (SI)
Kotek, Jiří (UMCH-V) RID
Krajnc, P. (SI)Article number 105551 Source Title Reactive and Functional Polymers. - : Elsevier - ISSN 1381-5148
Roč. 186, May (2023)Number of pages 6 s. Language eng - English Country NL - Netherlands Keywords polyHIPE ; porous polymers ; poly(thiol-enes) Subject RIV CD - Macromolecular Chemistry OECD category Polymer science Method of publishing Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 000953269400001 EID SCOPUS 85149380692 DOI 10.1016/j.reactfunctpolym.2023.105551 Annotation Porous thiol-ene polymer networks were prepared with different sulfur contents from high internal phase emulsions (HIPEs). A rigid thiol, tris [2-(3-mercaptopropionyloxy) ethyl] isocyanurate (TEMPIC), together with 1,6-hexanediol diacrylate (HDDA), was employed for this study. A modification of the polymer network was performed via the oxidation of the thioethers present in the polymer backbone to sulfoxides and sulfones. Infrared spectroscopy measurements confirmed that the selective oxidation of thioether groups was possible. Furthermore, the changes in thermomechanical properties were determined by dynamic mechanical analysis and thermogravimetric analysis. A significant increase in glass transition temperature from 4.9 to 41.5 °C for the resulting sulfone could be observed for networks with the highest sulfur content. Changes in mechanical properties were determined via tensile and compression testing and showed considerable improvement of tensile and compressive strength after the oxidation. The behavior of the materials upon hydrolytic stress was investigated and led to the highest mass loss for sulfone materials. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2024 Electronic address https://www.sciencedirect.com/science/article/pii/S1381514823000548?via%3Dihub
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