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Packagin-related properties of protein- and chitosan-coated paper
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
2005 (English)In: Packaging technology & science, ISSN 0894-3214, E-ISSN 1099-1522, Vol. 18, no 4, 161-170 p.Article in journal (Refereed) Published
Abstract [en]

The mechanical and gas-barrier properties of paper and paperboard coated with chitosan-acetic acid salt (chitosan), whey protein isolate, whey protein concentrate and wheat gluten protein were studied. Paper sheets were solution-coated using a hand applicator. In addition, bi-layer composites of wheat gluten and paper or paperboard were produced by compression moulding, and the chitosan solution was also applied on paperboard using curtain coating. Young's modulus, fracture stress, fracture strain, tearing strength, air permeance and oxygen permeability were assessed. The mechanical and air permeance measurements of solution-coated paper showed that chitosan was the most effective coating on a coat weight basis. This was due to its high viscosity, which limited the degree of penetration into the paper. ne proteins, however, also enhanced the strength and toughness of the paper. Compression-moulded wheat gluten/paper or paperboard, as well as curtain-coated chitosan paperboard laminates, showed oxygen barrier properties comparable to those of paper and paperboard coated with commercial barrier materials. None of the composites could be delaminated without fibre rupture, indicating good adhesion between the coatings and the substrates.

Place, publisher, year, edition, pages
2005. Vol. 18, no 4, 161-170 p.
Keyword [en]
chitosan, whey, gluten, coating, paper, board, packaging, water-vapor permeability, wheat gluten, grease resistance, films, extrusion, coatings, acids
Identifiers
URN: urn:nbn:se:kth:diva-14988DOI: 10.1002/pts.685ISI: 000231366800001Scopus ID: 2-s2.0-24144496058OAI: oai:DiVA.org:kth-14988DiVA: diva2:333029
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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