Počet záznamů: 1  

Emulsion templated poly(thiol-enes): selective oxidation improves mechanical properties

  1. 1.
    SYSNO ASEP0569582
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevEmulsion templated poly(thiol-enes): selective oxidation improves mechanical properties
    Tvůrce(i) Hobiger, V. (SI)
    Koler, A. (SI)
    Kotek, Jiří (UMCH-V) RID
    Krajnc, P. (SI)
    Číslo článku105551
    Zdroj.dok.Reactive and Functional Polymers. - : Elsevier - ISSN 1381-5148
    Roč. 186, May (2023)
    Poč.str.6 s.
    Jazyk dok.eng - angličtina
    Země vyd.NL - Nizozemsko
    Klíč. slovapolyHIPE ; porous polymers ; poly(thiol-enes)
    Vědní obor RIVCD - Makromolekulární chemie
    Obor OECDPolymer science
    Způsob publikováníOmezený přístup
    Institucionální podporaUMCH-V - RVO:61389013
    UT WOS000953269400001
    EID SCOPUS85149380692
    DOI10.1016/j.reactfunctpolym.2023.105551
    AnotacePorous 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.
    PracovištěÚstav makromolekulární chemie
    KontaktEva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
    Rok sběru2024
    Elektronická adresahttps://www.sciencedirect.com/science/article/pii/S1381514823000548?via%3Dihub
Počet záznamů: 1  

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