Curable benzoxazine/siloxane hybrid networks from renewable phenolics and glycerol

Cansin Birsen Buldum, Sevinc Gulyuz, Yusuf Yagci, Baris Kiskan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Siloxane bearing benzoxazines from renewable phenolics such as vanillin and coumarin were prepared and reacted with glycerol by silyl ether exchange reactions to yield processable, soft, and curable bio-hybrid gels. Moreover, these benzoxazine-based gels were cured below 200 °C favored by the catalytic effect of hydroxyl groups present on glycerol moieties to yield bio-hybrid polybenzoxazines. All the synthesized intermediates, gels, and ultimate networks were characterized by 1H, 13C NMR, FTIR, and UV–Vis analyses. The curing behavior and thermal stabilities of the monomers, glycerol-based gels and related polybenzoxazines were investigated by differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA). Moreover, the activation energies of polymerization of benzoxazine monomers were determined by DSC using the Kissinger and Ozawa methods.

Original languageEnglish
Article number111329
JournalEuropean Polymer Journal
Volume174
DOIs
Publication statusPublished - 5 Jul 2022

Bibliographical note

Publisher Copyright:
© 2022 Elsevier Ltd

Funding

The authors would like to thank Istanbul Technical University Research Fund. This paper is derived from undergraduate thesis studies of the author C.B. Buldum.

FundersFunder number
Istanbul Teknik Üniversitesi

    Keywords

    • Benzoxazine
    • Bio-hybrid
    • Coumarin
    • Glycerol
    • Polybenzoxazine
    • Vanillin

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