Thermomechanical relaxation and different water states in cottonseed protein derived bioplastics

Yue, Hangbo and Fernández-Blázquez, J. P. and Shuttleworth, P. S. and Cui, Y. D. and Ellis, Garry (2014). Thermomechanical relaxation and different water states in cottonseed protein derived bioplastics. "Rsc Advances", v. 4 ; pp. 32320-32326. ISSN 2046-2069. https://doi.org/10.1039/c4ra01794c.

Description

Title: Thermomechanical relaxation and different water states in cottonseed protein derived bioplastics
Author/s:
  • Yue, Hangbo
  • Fernández-Blázquez, J. P.
  • Shuttleworth, P. S.
  • Cui, Y. D.
  • Ellis, Garry
Item Type: Article
Título de Revista/Publicación: Rsc Advances
Date: 2014
ISSN: 2046-2069
Volume: 4
Subjects:
Faculty: E.T.S.I. Industriales (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Thermomechanical relaxation events and different water states in cottonseed protein bioplastics are presented whilst investigating the effects of aldehyde cross-linking agents. Thermomechanical relaxation of cottonseed protein bioplastics associated with protein denaturation, moisture absorption and broad glass transitions (Tg) were observed from DSC and DMA measurements. It was shown that variation of the aldehyde influences the storage modulus at very low temperature (below Tg). From measurements of the water fusion point, enthalpy, vaporisation, and weight loss, three water states in the water-absorbed bioplastics are suggested; namely strongly-bound-to-polymer, weakly-bound-to-polymer and bulk-like water. The water content and unreacted cross-linking agents are influential factors in controlling formation of the different water states, whilst the selection of different aldehydes was found to be negligible. These results could be valuable for adjusting the thermomechanical relaxations of protein based bioplastics, and tailoring their properties in wet environments.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainJCI-2011-10836UnspecifiedUnspecifiedUnspecified

More information

Item ID: 33339
DC Identifier: http://oa.upm.es/33339/
OAI Identifier: oai:oa.upm.es:33339
DOI: 10.1039/c4ra01794c
Official URL: http://pubs.rsc.org/en/content/articlelanding/2014/ra/c4ra01794c#!divAbstract
Deposited by: Memoria Investigacion
Deposited on: 02 Feb 2015 16:34
Last Modified: 06 May 2019 07:20
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