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A Novel Way of Adhering PET onto Protein (Wheat Gluten) Plastics to Impart Water Resistance
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Polymeric Materials.
Univ Auckland, Dept Chem & Mat Engn, Auckland 1142, New Zealand..
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Polymeric Materials. Swedish Univ Agr Sci, Fac Landscape Planning Hort & Crop Prod Sci, Dept Plant Breeding, S-23053 Alnarp, Sweden..
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Polymeric Materials.
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2018 (English)In: Coatings, ISSN 2079-6412, Vol. 8, no 11, article id 388Article in journal (Refereed) Published
Abstract [en]

This study presents an approach to protect wheat gluten (WG) plastic materials against water/moisture by adhering it with a polyethylene terephthalate (PET) film using a diamine (Jeffamine (R)) as a coupling agent and a compression molding operation. The laminations were applied using two different methods, one where the diamine was mixed with the WG powder and ground together before compression molding the mixture into plates with PET films on both sides. In the other method, the PET was pressed to an already compression molded WG, which had the diamine brushed on the surface of the material. Infrared spectroscopy and nanoindentation data indicated that the diamine did act as a coupling agent to create strong adhesion between the WG and the PET film. Both methods, as expected, yielded highly improved water vapor barrier properties compared to the neat WG. Additionally, these samples remained dimensionally intact. Some unintended side effects associated with the diamine can be alleviated through future optimization studies.

Place, publisher, year, edition, pages
MDPI , 2018. Vol. 8, no 11, article id 388
Keywords [en]
PET, lamination, nanoindentation, water vapor barrier, interface
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-240006DOI: 10.3390/coatings8110388ISI: 000451152400015OAI: oai:DiVA.org:kth-240006DiVA, id: diva2:1269302
Note

QC 20181210

Available from: 2018-12-10 Created: 2018-12-10 Last updated: 2018-12-10Bibliographically approved

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Das, OisikHedenqvist, Mikael S.

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