Injection-molded nanocomposites and materials based on wheat gluten
2011 (English)In: International Journal of Biological Macromolecules, ISSN 0141-8130, E-ISSN 1879-0003, Vol. 48, no 1, 146-152 p.Article in journal (Refereed) Published
This is, to our knowledge, the first study of the injection molding of materials where wheat gluten (WG) is the main component. In addition to a plasticizer (glycerol), 5 wt.% natural montmorillonite clay was added. X-ray indicated intercalated clay and transmission electron microscopy indicated locally good clay platelet dispersion. Prior to feeding into the injection molder, the material was first compression molded into plates and pelletized. The filling of the circular mold via the central gate was characterized by a divergent flow yielding, in general, a stronger and stiffer material in the circumferential direction. It was observed that 20-30 wt.% glycerol yielded the best combination of processability and mechanical properties. The clay yielded improved processability, plate homogeneity and tensile stiffness. IR spectroscopy and protein solubility indicated that the injection molding process yielded a highly aggregated structure. The overall conclusion was that injection molding is a very promising method for producing WG objects.
Place, publisher, year, edition, pages
2011. Vol. 48, no 1, 146-152 p.
Injection molding, Nanocomposites, Wheat gluten, Montmorillonite, Mechanical properties
Biochemistry and Molecular Biology
IdentifiersURN: urn:nbn:se:kth:diva-31626DOI: 10.1016/j.ijbiomac.2010.10.012ISI: 000287279700025ScopusID: 2-s2.0-78650245588OAI: oai:DiVA.org:kth-31626DiVA: diva2:405592
QC 201103232011-03-232011-03-212011-03-23Bibliographically approved