Composites containing acetylated wheat B-starch for agriculture applications

E. Šárka, Z. Kruliš, J. Kotek, L. Růžek, K. Voříšek, J. Koláček, K. Hrušková, M. Růžková and O. Ekrt
Additional contact information
E. Šárka: Department of Carbohydrates and Cereals, Faculty of Food and Biochemical Technology, Institute of Chemical Technology Prague, Prague, Czech Republic
Z. Kruliš: Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
J. Kotek: Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
L. Růžek: Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic
K. Voříšek: Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic
J. Koláček: Department of Carbohydrates and Cereals, Faculty of Food and Biochemical Technology, Institute of Chemical Technology Prague, Prague, Czech Republic
K. Hrušková: Department of Carbohydrates and Cereals, Faculty of Food and Biochemical Technology, Institute of Chemical Technology Prague, Prague, Czech Republic
M. Růžková: Central Institute for Supervising and Testing in Agriculture, Brno, Czech Republic
O. Ekrt: Department of Physics and Measurements, Faculty of Chemical Engineering, Institute of Chemical Technology Prague, Prague, Czech Republic

Plant, Soil and Environment, 2012, vol. 58, issue 8, 354-359

Abstract: Native and acetylated B-starch was used in biodegradable films after blending with either poly-(ε-caprolactone) (PCL) or ethylene vinyl acetate copolymer (EVA). The following mechanical characteristics of prepared films were derived from the stress-strain curves: Young modulus, yield stress, stress-at-break and strain-at-break. Acetylation of starch molecules in the composites reduced the degradation rate in compost. Optical microscopy, combined with the image analysis system NIS-Elements completed with extended depth of focus (EDF) module, was used to study the PCL/starch and EVA/starch films surface morphology during composting. Parameters of the compost used for film exposition were measured.

Keywords: biodegradable plastic; polycaprolactone; ethylene vinyl acetate copolymer; image analysis; green waste compost (search for similar items in EconPapers)
Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:58:y:2012:i:8:id:287-2012-pse

DOI: 10.17221/287/2012-PSE

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