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STARCH Recent Advances In Biopolymer Science And Technology
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SYSNO ASEP 0358894 Document Type M - Monograph Chapter R&D Document Type Monograph Chapter Title Structure, mechanical properties and biodegradability of PCL/Starch blends Author(s) Šárka, E. (CZ)
Synytsya, A. (CZ)
Kruliš, Zdeněk (UMCH-V) RID, ORCID
Kotek, Jiří (UMCH-V) RID
Růžek, L. (CZ)
Bubník, Z. (CZ)
Růžková, M. (CZ)Source Title STARCH Recent Advances In Biopolymer Science And Technology. - Kraków : Polish Society of Food Technologists', 2010 / Fiedorowicz M. ; Bertoft E. - ISBN 978-83-932389-0-3 Pages s. 131-143 Number of pages 13 s. Number of pages 195 Language eng - English Country PL - Poland Keywords poly-(ε-caprolactone) (PCL) ; B-starch ; acetylated starch Subject RIV GM - Food Processing R&D Projects GA525/09/0607 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40500505 - UMCH-V (2005-2011) Annotation Native or pre-gelatinized wheat starches (A and B types) or acetylated derivatives or native starch with degree of substitution DS of 1.5÷2.3 (10, 20, and 40 % m/m) were blended with poly-(ε-caprolactone) (PCL). Structure of the prepared films was analysed by FT-IR spectroscopy in comparison with the initial polymers. The following mechanical characteristics of the prepared films were derived from the stress-strain curves: Young modulus, yield stress, tensile strength, and strain at break. Water absorption of PCL/starch (6O/4O) films was determined according to ISO 62. The films containing native and pregelatinized starch degraded in compost totally during 1-2 months. Acetylation of starch molecules in the blends reduced the degradation rate. Chemical changes in the compost used for film exposition were measured. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2012
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