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Study of starch and starch-PVOH blends and effects of plasticizers on mechanical and barrier properties of coated paperboard
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Material och ytteknik.
2016 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 31, no 3, 499-510 p.Article in journal (Refereed) Published
Abstract [en]

The mechanical properties of self-supporting films based on starch-plasticizer and starch-PVOH-plasticizer and the barrier properties of paperboard coated with solutions of these polymers have been studied. The plasticizers used were glycerol, polyethylene glycol and citric acid. It was shown that the addition of a plasticizer and PVOH to starch substantially increases the flexibility of starch films. It was seen that curing the self-supporting films led to a decrease in flexibility. After heat-treatment, a substantial increase in storage modulus was observed only in the starch-PVOH-citric-acid blend films. Tensile tests on the films indicate that citric acid did not cause any noticeable phase separation. Citric acid acted as a compatibilizer for starch-PVOH blends even though a similar enrichment of PVOH at the air-solid interface was observed with both citric acid and polyethylene glycol as plasticizer. The properties of barrier coatings greatly reflected the compatibility of starch-PVOH blends containing citric acid. The only plasticizer that resulted in a lower water vapour transmission rate through the starch and starch-PVOH coatings was citric acid, which suggests that cross-linking took place. With four layers, coatings based of starch-PVOH possessed the same oxygen- transmission rate with citric acid as without citric acid.

Place, publisher, year, edition, pages
Swedish Association of Pulp and Paper Engineers , 2016. Vol. 31, no 3, 499-510 p.
Keyword [en]
Barrier coating, Citric acid, Glycerol, Mechanical properties, Polyethylene glycol, Starch Pages
National Category
Polymer Technologies Polymer Chemistry
Identifiers
URN: urn:nbn:se:ri:diva-27769DOI: 10.3183/NPPRJ-2016-31-03-p499-510OAI: oai:DiVA.org:ri-27769DiVA: diva2:1062572
Available from: 2017-01-06 Created: 2017-01-06 Last updated: 2017-01-06Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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  • modern-language-association-8th-edition
  • vancouver
  • Other style
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
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  • nn-NB
  • sv-SE
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Output format
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