Sepiolite as a promising nanoclay for nano-biocomposites based on starch and biodegradable polyester.

Autor: Olivato JB; Departamento de Ciência e Tecnologia de Alimentos, Centro de Ciências Agrárias, Universidade Estadual de Londrina, PO Box 6001, 86051-980 Londrina, PR, Brazil; BioTeam/ICPEES-ECPM, UMR CNRS 7515, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg Cedex 2, France. Electronic address: jubonametti@uel.br., Marini J; Departamento de Engenharia de Materiais, Universidade Federal de São Carlos, São Carlos, Brazil., Yamashita F; Departamento de Ciência e Tecnologia de Alimentos, Centro de Ciências Agrárias, Universidade Estadual de Londrina, PO Box 6001, 86051-980 Londrina, PR, Brazil., Pollet E; BioTeam/ICPEES-ECPM, UMR CNRS 7515, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg Cedex 2, France., Grossmann MV; Departamento de Ciência e Tecnologia de Alimentos, Centro de Ciências Agrárias, Universidade Estadual de Londrina, PO Box 6001, 86051-980 Londrina, PR, Brazil., Avérous L; BioTeam/ICPEES-ECPM, UMR CNRS 7515, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg Cedex 2, France.
Jazyk: angličtina
Zdroj: Materials science & engineering. C, Materials for biological applications [Mater Sci Eng C Mater Biol Appl] 2017 Jan 01; Vol. 70 (Pt 1), pp. 296-302. Date of Electronic Publication: 2016 Aug 31.
DOI: 10.1016/j.msec.2016.08.077
Abstrakt: The effects of sepiolite addition (0, 1, 3 and 5wt%) were evaluated on dynamic-mechanical behaviour, water uptake, thermal and optical properties of thermoplastic starch (TPS)/poly (butylene adipate-co-terephthalate) (PBAT) nano-biocomposites, with different TPS/PBAT (w/w) ratios and nanofiller contents. The results highlighted the improvement of the dynamic-mechanical behaviour with the addition of sepiolite, producing high performance materials. An increase of 25°C in the T g of TPS was recorded by DMTA analysis at sepiolite content of 5wt%. The sepiolite influenced the crystallisation of nano-biocomposites, without causing interference in the crystal organisation, evidenced by DSC analysis. The addition of sepiolite nanoclay decreased the water adsorption rate and water adsorption capacity of the corresponding nano-biocomposites. For such multiphase systems, the successful use of natural sepiolite brought a clear benefit, without the need of any modifications or additional processes to produce advanced nano-biocomposites.
(Copyright © 2016 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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