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Mixture design applied for the study of the tartaric acid effect on starch/polyester films

Olivato, J.B. ; Nobrega, M.M. ; Müller, C.M.O. ; Shirai, M.A. ; Yamashita, F. ; Grossmann, M.V.E.

Carbohydrate polymers, 2013-02, Vol.92 (2), p.1705-1710 [Periódico revisado por pares]

Kidlington: Elsevier Ltd

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Título:
Mixture design applied for the study of the tartaric acid effect on starch/polyester films
Autor: Olivato, J.B. ; Nobrega, M.M. ; Müller, C.M.O. ; Shirai, M.A. ; Yamashita, F. ; Grossmann, M.V.E.
Assuntos: acidolysis ; Applied sciences ; Blown films ; crystal structure ; Exact sciences and technology ; Forms of application and semi-finished materials ; Glycerol ; Glycerol - chemistry ; Mechanical Phenomena ; Mixture design ; modulus of elasticity ; packaging ; Permeability ; polyesters ; Polyesters - chemistry ; Polymer industry, paints, wood ; Sheets and films ; Starch ; Starch - chemistry ; Tartaric acid ; Tartrates - chemistry ; Technology of polymers ; Temperature ; tensile strength ; Volatilization ; Water - chemistry ; water vapor
É parte de: Carbohydrate polymers, 2013-02, Vol.92 (2), p.1705-1710
Notas: http://dx.doi.org/10.1016/j.carbpol.2012.11.024
ObjectType-Article-1
SourceType-Scholarly Journals-1
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Descrição: ► The effect of tartaric acid in starch/PBAT blends were evaluated. ► A mixture design was used to evaluate the effects in mechanical and barrier properties. ► Intermediate proportions of tartaric acid produced films with better properties. ► Biodegradable films with good properties were obtained. ► This showed to be an interesting alternative to the non-biodegradable packaging. Tartaric acid (TA), a dicarboxylic acid, can act as a compatibiliser in starch/polyester blends. A mixture design was proposed to evaluate the effect of TA on the properties of starch/poly (butylene adipate co-terephthalate) (PBAT) blown films plasticised with glycerol. The interaction between the starch/PBAT and the TA has a positive effect on the tensile strength and puncture force. Additionally, greater proportions of TA increased Young's modulus. The starch+PBAT/TA and Gly/TA interactions contributed to a reduction in the water vapour permeability of the films. The inclusion of TA did not change the crystallinity of the samples. Formulations with intermediate proportions of TA (0.8g/100g) were shown to produce the best compatibilising effect. This was observed by DMA analysis as a consequence of the perfect equilibrium between the contributions of TA as a compatibiliser and in the acidolysis of starch, resulting in films with a tensile strength of 5.93MPa, a possible alternative to non-biodegradable packaging.
Editor: Kidlington: Elsevier Ltd
Idioma: Inglês

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Mixture design applied for the study of the tartaric acid effect on starch/polyester films

Olivato, J.B. ; Nobrega, M.M. ; Müller, C.M.O. ; Shirai, M.A. ; Yamashita, F. ; Grossmann, M.V.E.

Kidlington: Elsevier Ltd

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