Preparation and Properties of Biodegradable Foams

Jacqueline Stagner, Ramani Narayan

    Research output: Research - peer-reviewArticle

    • 3 Citations

    Abstract

    Foam extrusion of biodegradable polyester [poly(butylene adipate-co-terephthalate) (PBAT)] and its blends with maleated thermoplastic starch (MTPS) using a chemical blowing agent was performed. The effect of MTPS and percentage of chemical blowing agent on various foam properties is discussed. In general, an increased amount of PBAT in the foams improves the properties of the foams. The foam samples were characterized by measurements of density, expansion ratio, specific length, compressive strength, resiliency, moisture sorption, and imaging using digital light microscopy. Density, expansion ratio, and specific length measurements show that the best characteristics of lowest density, highest expansion ratio, and highest specific length are exhibited by the PBAT samples. The compressive strength and foam density exhibit a power-law relationship. Greater amounts of PBAT in the samples increase the resiliency and decrease the steady state weight gain during moisture sorption. All samples show regions of unfoamed material when only 3% chemical blowing agent is used, but when 5 and 7% chemical blowing agent is used, the samples exhibit cells throughout the matrix.

    LanguageEnglish (US)
    Pages598-606
    Number of pages9
    JournalJournal of Polymers and the Environment
    Volume19
    Issue number3
    DOIs
    StatePublished - Sep 2011

    Profile

    Foams
    Blowing agents
    butylene glycol adipic acid polyester
    terephthalic acid
    Starch
    Thermoplastics
    Compressive strength
    Sorption
    Moisture
    Polyesters
    Optical microscopy
    Extrusion
    Imaging techniques

    Keywords

    • Biodegradable
    • Foam
    • PBAT
    • Thermoplastic starch

    ASJC Scopus subject areas

    • Environmental Engineering
    • Polymers and Plastics
    • Materials Chemistry

    Cite this

    Preparation and Properties of Biodegradable Foams. / Stagner, Jacqueline; Narayan, Ramani.

    In: Journal of Polymers and the Environment, Vol. 19, No. 3, 09.2011, p. 598-606.

    Research output: Research - peer-reviewArticle

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