Počet záznamů: 1  

Polyhedral oligomeric silsesquioxane (POSS)-based epoxy nanocomposite involving a reversible Diels–Alder-type network as a self-healing material

  1. 1.
    SYSNO ASEP0549416
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevPolyhedral oligomeric silsesquioxane (POSS)-based epoxy nanocomposite involving a reversible Diels–Alder-type network as a self-healing material
    Tvůrce(i) Strachota, Beata (UMCH-V) RID
    Matějka, Libor (UMCH-V) RID
    Hodan, Jiří (UMCH-V)
    Kobera, Libor (UMCH-V) RID, ORCID
    Mahun, Andrii (UMCH-V) ORCID
    Dybal, Jiří (UMCH-V) RID, ORCID
    Šlouf, Miroslav (UMCH-V) RID, ORCID
    Zdroj.dok.Journal of Adhesion Science and Technology. - : Taylor & Francis - ISSN 0169-4243
    Roč. 35, č. 24 (2021), s. 2736-2757
    Poč.str.22 s.
    Jazyk dok.eng - angličtina
    Země vyd.NL - Nizozemsko
    Klíč. slovaPOSS ; epoxy nanocomposite ; physical crosslinking
    Vědní obor RIVCD - Makromolekulární chemie
    Obor OECDPolymer science
    CEPGA19-04925S GA ČR - Grantová agentura ČR
    Způsob publikováníOmezený přístup
    Institucionální podporaUMCH-V - RVO:61389013
    UT WOS000693272100001
    EID SCOPUS85114254109
    DOI10.1080/01694243.2021.1970367
    AnotaceEpoxy-polyhedral oligomeric silsesquioxane (POSS) nanocomposites were prepared by incorporating POSS nanofiller into the epoxy-amine network. The monofunctional epoxy-POSS monomer or nonfunctional octaphenyl POSS unit were applied to reinforce the epoxy network by producing the nanocomposite with chemically bound pendant POSS or physically admixed POSS. The combination of reactive and unreactive POSS, leads to a synergistic effect and to the most efficient reinforcement of the epoxy network. Both polymer-POSS and POSS–POSS interactions are present in the system and lead to a strong physical crosslinking through the path polymer-bound POSS-unbound POSS domain. The nanocomposite was modified by incorporation of the thermoreversible Diels–Alder (DA) type network. The produced interpenetrating network composed of the irreversible reinforced epoxy and the reversible DA networks exhibits an efficient self-healing capability. This strong nanocomposite, showing a modulus of 800 MPa at room temperature, was healed with an efficiency of 61%. The developed stiff nanocomposite is shown to be a promising material because self-healing of strong thermosets is still a big challenge. With the increasing content of POSS nanofiller and heterogeneity of the nanocomposite, however, the healing efficiency diminishes. The insufficient contact of crack surfaces due to involved inhomogeneities results in a worse sealing of the material crack.
    PracovištěÚstav makromolekulární chemie
    KontaktEva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
    Rok sběru2022
    Elektronická adresahttps://www.tandfonline.com/doi/full/10.1080/01694243.2021.1970367
Počet záznamů: 1  

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