Thermomechanical relaxation and different water states in cottonseed protein derived bioplastics

Yue, Hangbo; Fernández-Blázquez, J. P.; Shuttleworth, P. S.; Cui, Y. D. y 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.

Descripción

Título: Thermomechanical relaxation and different water states in cottonseed protein derived bioplastics
Autor/es:
  • Yue, Hangbo
  • Fernández-Blázquez, J. P.
  • Shuttleworth, P. S.
  • Cui, Y. D.
  • Ellis, Garry
Tipo de Documento: Artículo
Título de Revista/Publicación: Rsc Advances
Fecha: 2014
Volumen: 4
Materias:
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Otro
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 33339
Identificador DC: http://oa.upm.es/33339/
Identificador OAI: oai:oa.upm.es:33339
Identificador DOI: 10.1039/c4ra01794c
URL Oficial: http://pubs.rsc.org/en/content/articlelanding/2014/ra/c4ra01794c#!divAbstract
Depositado por: Memoria Investigacion
Depositado el: 02 Feb 2015 16:34
Ultima Modificación: 17 Jul 2015 22:56
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