Conversion of paper to film by ionic liquids: manufacturing process and properties

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6 Citations (Scopus)

Abstract

Abstract: In this study, we investigate the “chemical welding” of paper with the ionic liquid (IL) 1-ethyl-3-methylimidazolium acetate ([EMIM]OAc) using a two-step process. First, the IL is transported into the structure of the paper as a water solution. Then, partial dissolution is achieved by activation with heat (80–95 °C), where the water evaporates and the surfaces of the fibres partially dissolve. The activated paper is washed with water to remove IL, and dried to fuse fibre surfaces into each other. The “chemically welded” paper structure has both elevated dry and wet strength. The treatment conditions can be adjusted to produce both paper-like materials and films. The most severe treatment conditions produce films that are fully transparent and their oxygen and grease barrier properties are excellent. As an all-cellulose material, the “chemically welded” paper is fully biodegradable and is a potential alternative to fossil fuel-based plastics. Graphical abstract: [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)6107-6119
Number of pages13
JournalCellulose
Volume25
Issue number10
DOIs
Publication statusPublished - 1 Oct 2018
MoE publication typeNot Eligible

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Keywords

  • All-cellulose composite
  • Cellulose
  • Ionic liquids
  • Paper
  • Partial dissolution

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