The Use of Glycerol Carbonate in the Preparation of Highly Branched Siloxy Polymers

Yuya Tachibana, Xiangke Shi, Daniel Graiver, Ramani Narayan

    Research output: Contribution to journalArticle

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    Abstract

    Glycerol is an important biomass feedstock readily available as a by-product from the production of fatty acid methyl esters (FAME). Glycerol can be converted to glycerol carbonate, which readily reacts with many nucleophilic reagents including amines. Here, we demonstrate the reaction of glycerol carbonate and 3-aminopropylalkoxylsilane to yield hydroxyl alkyl terminated silanes. This reaction follows a second order rate constant irrespective of the type of aminosilane that was used. These hydroxyl alkyl terminated silanes were further polymerized to yield highly branched siloxy polymers via self-polycondensation through exchange of the ethoxy groups attached to the silicon atom with the terminal hydroxyl groups. The biobased content of these products was determined by ASTM 6866 to be as high as 69 %. The synthesis of the silane monomers as well as the structure and key properties of the hydroxyl alkyl terminated siloxy polymers were determined by DSC, 1H NMR, FTIR, TGA and GPC.

    Original languageEnglish (US)
    Pages (from-to)5-13
    Number of pages9
    JournalSilicon
    Volume7
    Issue number1
    DOIs
    StatePublished - Dec 2 2014

    Profile

    Glycerol
    Silanes
    Carbonates
    Polymers
    Polycondensation
    Fatty acids
    Feedstocks
    Byproducts
    Amines
    Rate constants
    Esters
    Biomass
    Monomers
    Nuclear magnetic resonance
    Silicon
    Atoms
    Panthera
    Aerospace Medicine
    Dapsone
    Cerebellar Ataxia

    Keywords

    • Biobased content
    • Branched siloxy polymers
    • Glycerol carbonate
    • Urethane

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials

    Cite this

    The Use of Glycerol Carbonate in the Preparation of Highly Branched Siloxy Polymers. / Tachibana, Yuya; Shi, Xiangke; Graiver, Daniel; Narayan, Ramani.

    In: Silicon, Vol. 7, No. 1, 02.12.2014, p. 5-13.

    Research output: Contribution to journalArticle

    Tachibana, Yuya; Shi, Xiangke; Graiver, Daniel; Narayan, Ramani / The Use of Glycerol Carbonate in the Preparation of Highly Branched Siloxy Polymers.

    In: Silicon, Vol. 7, No. 1, 02.12.2014, p. 5-13.

    Research output: Contribution to journalArticle

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