Improving wheat gluten materials properties by Kraft lignin addition

The industrial production of wheat gluten (WG)‐based biomaterials implies to improve their actual mechanical properties as well as to reduce their water sensitivity. In this study, the effect of Kraft lignin (KL) content on the processability and on the physical properties of WG materials was invest...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied polymer science 2012-07, Vol.125 (2), p.1391-1399
Main Authors: Kunanopparat, Thiranan, Menut, Paul, Morel, Marie-Hélène, Guilbert, Stéphane
Format: Article
Language:English
Subjects:
Applied sciences
Biomaterials
Biomedical materials
biopolymers
Blends
Dynamic tests
Exact sciences and technology
Forms of application and semi-finished materials
Gluten
Life Sciences
Materials science
Polymer industry, paints, wood
Polymers
Surgical implants
Technology of polymers
Tensile tests
Thermal analysis
viscoelastic properties
Wheat
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The industrial production of wheat gluten (WG)‐based biomaterials implies to improve their actual mechanical properties as well as to reduce their water sensitivity. In this study, the effect of Kraft lignin (KL) content on the processability and on the physical properties of WG materials was investigated. WG plasticized with glycerol was blended with KL, and processed into materials by mixing and thermomolding. Materials were characterized by dynamic mechanical thermal analysis, tensile test, and water absorption measurements. The introduction of KL in plasticized WG resulted in an increase of the material glass transition temperature (Tg) and in a strong decrease of the rubbery storage modulus, which will favor industrial processing. The increase in Tg did not follow a simple mixing rule, demonstrating specific interaction between KL and WG. The resulting materials effectively showed improved properties when compared with pure WG‐based materials: they exhibited higher tensile strength and lower water sensitivity in ambient conditions. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
ISSN:0021-8995
1097-4628
DOI:10.1002/app.35345