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Foaming behavior of water-soluble cellulose derivatives: hydroxypropyl methylcellulose and ethyl hydroxyethyl cellulose
Chalmers University of Technology, Sweden.
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Food and Bioscience, Structure Design.
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Food and Bioscience, Structure Design. Chalmers University of Technology, Sweden.ORCID iD: 0000-0003-0310-4465
Chalmers University of Technology, Sweden.
2015 (English)In: Cellulose (London), ISSN 0969-0239, E-ISSN 1572-882X, Vol. 22, no 4, p. 2651-2664Article in journal (Refereed) Published
Abstract [en]

Hydroxypropyl methylcellulose and ethyl hydroxyethyl cellulose could be interesting candidates for production of lightweight, foamed packaging material originating from non-fossil, renewable resources. The foaming ability of nine different grades of the two cellulose derivatives, using water as the blowing agent, was investigated using a hot-mold process. The foaming process was studied by evaluating the water loss during the heating, both in a real-time experiment and by thermal gravimetric analysis. Further, the development of the rheological properties of the derivative-water mixtures during a simulated foaming process was assessed using dynamical mechanical thermal analysis and viscosity measurements. Five of the studied derivatives showed promising properties for hot-mold foaming and the final foams were characterized with regard to their apparent density. It was concluded that the foamability of these systems seems to require a rather careful tailoring of the viscoelastic properties in relation to the water content in order to ensure that a network structure is built up and expanded during the water evaporation.

Place, publisher, year, edition, pages
2015. Vol. 22, no 4, p. 2651-2664
Keywords [en]
Cellulose derivatives, Hydroxypropyl methylcellulose (HPMC), Ethyl hydroxyethyl cellulose (EHEC), Foaming, Rheological characterization, Bulk density
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-6893DOI: 10.1007/s10570-015-0669-0Local ID: 30701OAI: oai:DiVA.org:ri-6893DiVA, id: diva2:964734
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2019-07-05Bibliographically approved

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Stading, Mats

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