Chemical modification of cellulosic fibres for better convertibility in packaging applications

S. Vuoti, E. Laatikainen, H. Heikkinen, L.-S. Johansson, E. Saharinen, E . Retulainen

    Research output: Contribution to journalArticleScientificpeer-review

    33 Citations (Scopus)

    Abstract

    Cellulose fiber has been modified by mechanical and chemical means in order to improve paper properties, which respond to moisture and temperature. When the cellulose is first refined and then etherified using hydroxypropylation under dry conditions, the paper sheets prepared from the hydroxypropylated cellulose show improved elongation. When the level of hydroxypropylation is high enough, the paper sheets also become transparent. Additionally, the effect of cellulose activation using different mechanical methods has been compared by esterification reactions. It is shown that removal of water is the most crucial step for the esterification reactions while other methods have a lesser impact. The paper sheets prepared from the esterified cellulose fibers show an increase in contact angles and high hydrophobicity. (C) 2012 Elsevier Ltd. All rights reserved.
    Original languageEnglish
    Pages (from-to)549-559
    JournalCarbohydrate Polymers
    Volume96
    Issue number2
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed

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