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Inverse Vulcanization of Styrylethyltrimethoxysilane–Coated Surfaces, Particles, and Crosslinked Materials

Scheiger, Johannes M.; Direksilp, Chatrawee; Falkenstein, Patricia; Welle, Alexander; Koenig, Meike; Heissler, Stefan; Matysik, Jörg; Levkin, Pavel A.; Theato, Patrick

Sulfur as a side product of natural gas and oil refining is an underused resource. Converting landfilled sulfur waste into materials merges the ecological imperative of resource efficiency with economic considerations. A strategy to convert sulfur into polymeric materials is the inverse vulcanization reaction of sulfur with alkenes. However, the materials formed are of limited applicability, because they need to be cured at high temperatures (>130 °C) for many hours. Herein, we report the reaction of elemental sulfur with styrylethyltrimethoxysilane. Marrying the inverse vulcanization and silane chemistry yielded high sulfur content polysilanes, which could be cured via room temperature polycondensation to obtain coated surfaces, particles, and crosslinked materials. The polycondensation was triggered by hydrolysis of poly(sulfur‐r‐styrylethyltrimethoxysilane) (poly(S$_{n}$‐r‐StyTMS) under mild conditions (HCl, pH 4). For the first time, an inverse vulcanization polymer could be conveniently coated and mildly cured via post‐polycondensation. Silica microparticles coated with the high sulfur content polymer could improve their Hg$^{2+}$ ion remediation capability.

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Verlagsausgabe §
DOI: 10.5445/IR/1000125910
Veröffentlicht am 10.11.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Zukunftscampus (CAMPUS)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 10.2020
Sprache Englisch
Identifikator ISSN: 1433-7851, 1521-3773
KITopen-ID: 1000125910
Erschienen in Angewandte Chemie / International edition
Band 59
Heft 42
Seiten 18639–18645
Vorab online veröffentlicht am 05.10.2020
Nachgewiesen in Scopus
Web of Science
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