title: Sepiolite as a promising nanoclay for nano-biocomposites based on starch and biodegradable polyester.
abstract: 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 Tgof 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.
authors: 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.
authors: J B
authors: JB
authors: Olivato
authors: Departamento de Engenharia de Materiais, Universidade Federal de São Carlos, São Carlos, Brazil.
authors: J
authors: J
authors: Marini
authors: Departamento de Ciência e Tecnologia de Alimentos, Centro de Ciências Agrárias, Universidade Estadual de Londrina, PO Box 6001, 86051-980 Londrina, PR, Brazil.
authors: F
authors: F
authors: Yamashita
authors: BioTeam/ICPEES-ECPM, UMR CNRS 7515, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg Cedex 2, France.
authors: E
authors: E
authors: Pollet
authors: Departamento de Ciência e Tecnologia de Alimentos, Centro de Ciências Agrárias, Universidade Estadual de Londrina, PO Box 6001, 86051-980 Londrina, PR, Brazil.
authors: M V E
authors: MV
authors: Grossmann
authors: BioTeam/ICPEES-ECPM, UMR CNRS 7515, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg Cedex 2, France.
authors: L
authors: L
authors: Avérous
mesh_terms: D000327:Adsorption; D000538:Aluminum Silicates / Q000737:chemistry*; D001672:Biocompatible Materials / Q000737:chemistry*; D002152:Calorimetry, Differential Scanning; D000077215:Clay; D003116:Color; D055119:Elastic Modulus; D017633:Magnesium Silicates / Q000737:chemistry*; D008962:Models, Theoretical; D053758:Nanoparticles / Q000737:chemistry*; D011091:Polyesters / Q000737:chemistry*; D013213:Starch / Q000737:chemistry*; D013696:Temperature; D014867:Water / Q000737:chemistry
chemical_list: D000538:Aluminum Silicates; D001672:Biocompatible Materials; D017633:Magnesium Silicates; D011091:Polyesters; C488797:poly(butylene adipate-co-butylene terephthalate); D014867:Water; D013213:Starch; C001671:magnesium trisilicate; D000077215:Clay
keywords: Biobased materials; Dynamic-mechanical properties; Nanoclay; Poly (butylene adipate-co-terephthalate); Thermoplastic starch