Novel Foams Based on Freeze-Dried Renewable Vital Wheat Gluten

Thomas O.J. Blomfeldt, Richard T. Olsson, Mohan Menon, David Plackett, Eva Johansson, M.S. Hedenqvist

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    A new way of producing rigid or semi-rigid foams from vital wheat gluten using a freeze-drying process is reported. Water/gluten-based mixtures were frozen and freeze-dried. Different foam structures were obtained by varying the mixing process and wheat gluten concentration, or by adding glycerol or bacterial cellulose nanofibers. MIP revealed that the foams had mainly an open porosity peaking at 93%. The average pore diameter ranged between 20 and 73 µm; the sample with the highest wheat gluten concentration and no plasticizer had the smallest pores. Immersion tests with limonene revealed that the foams rapidly soaked up the liquid. An especially interesting feature of the low-wheat-concentration foams was the “in situ” created soft-top-rigid-bottom foams.
    Original languageEnglish
    JournalMacromolecular Materials & Engineering
    Volume295
    Issue number9
    Pages (from-to)796-801
    ISSN1438-7492
    DOIs
    Publication statusPublished - 2010

    Keywords

    • Biopolymers
    • Solar energy

    Fingerprint Dive into the research topics of 'Novel Foams Based on Freeze-Dried Renewable Vital Wheat Gluten'. Together they form a unique fingerprint.

    Cite this