Chemical modification of cellulosic fibers for better convertibility in packaging applications

Sauli Vuoti (Corresponding Author), Elina Laatikainen, Harri Heikkinen, Leena-Sisko Johansson, Erkki Saharinen, Elias Retulainen

Research output: Contribution to journalArticleScientificpeer-review

31 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.
Original languageEnglish
Pages (from-to)549-559
JournalCarbohydrate Polymers
Volume96
Issue number2
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

Keywords

  • cellulose modification
  • transparent paper
  • cellulose esterification
  • paper elongation
  • hydrophobicity

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