Potential of chemo- enzymatically modified CTMP in biocomposites

Anna Suurnäkki, Hannu Mikkonen, Kirsi Immonen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    The effect of chemo-enzymatic hydrophobisation of spruce chemi thermo mechanical pulp, CTMP, on the properties of biocomposites was studied. CTMP surface was modified with tailor-made phenolic compounds with different alkyl chain length substituents suited to physical properties of plastic. Dispersion technology was developed and applied for dosing these water insoluble substrates. The modified fibre materials were compounded with polylactic acid (PLA) or polyhydroxybutyrate (PHB) and the properties of composites were studied. Modification with dodecyl gallate (DOGA) resulted in improved dispersion of fibres both with PLA and PHB. In addition, mechanical properties were found to be similar or better than with reference fibre containing materials, but depending on the biopolymer type and its' melt behaviour. The enhancement to mechanical properties was found to be more significant in biocomposites in which PLA was used as matrix polymer.
    Original languageEnglish
    Title of host publicationProceedings
    Subtitle of host publication16th International Symposium on Wood, Fiber and Pulping Chemistry, 16th ISWFPC
    Pages1293-1296
    Volume2
    Publication statusPublished - 2011
    MoE publication typeA4 Article in a conference publication
    Event16th International Symposium on Wood, Fiber and Pulping Chemistry, 16th ISWFPC - Tianjin, China
    Duration: 8 Jun 201110 Jun 2011

    Conference

    Conference16th International Symposium on Wood, Fiber and Pulping Chemistry, 16th ISWFPC
    Abbreviated title16th ISWFPC
    CountryChina
    CityTianjin
    Period8/06/1110/06/11

    Keywords

    • biocomposites
    • CTMP
    • biopolymers
    • chemo-enzymatic modification
    • composite properties

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