Number of the records: 1
Structure characterization and biodegradation rate of poly(.epsilon.-caprolactone)/starch blends
- 1.
SYSNO ASEP 0524738 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Structure characterization and biodegradation rate of poly(.epsilon.-caprolactone)/starch blends Author(s) Nevoralová, Martina (UMCH-V) RID, ORCID
Koutný, M. (CZ)
Ujčić, Aleksanda (UMCH-V) RID, ORCID
Starý, Zdeněk (UMCH-V) RID
Šerá, J. (CZ)
Vlková, Helena (UMCH-V)
Šlouf, Miroslav (UMCH-V) RID, ORCID
Fortelný, Ivan (UMCH-V) RID
Kruliš, Zdeněk (UMCH-V) RID, ORCIDArticle number 141 Source Title Frontiers in Materials. - : Frontiers Media - ISSN 2296-8016
Roč. 7, 5 June (2020), s. 1-14Number of pages 14 s. Language eng - English Country CH - Switzerland Keywords poly (epsilon-caprolactone) ; thermoplastic starch ; biodegradation rate Subject RIV CD - Macromolecular Chemistry OECD category Polymer science R&D Projects NV15-31269A GA MZd - Ministry of Health (MZ) TE01020118 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) TN01000008 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) LO1507 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support UMCH-V - RVO:61389013 UT WOS 000543185200001 EID SCOPUS 85086771326 DOI 10.3389/fmats.2020.00141 Annotation The present paper focuses on the effects of blending poly (ε-caprolactone) (PCL) with thermoplastic starch (TPS) on the final biodegradation rate of PCL/TPS blends, emphasizing the type of environment in which biodegradation takes place. The blends were prepared by melt-mixing the components before a two-step processing procedure, which strongly affects the degree of plasticization and therefore the final material morphology, as was detailed in the previous work, was used for the thermoplastic starch. The concentration row of pure PCL over PCL/TPS blends to pure TPS was analyzed for biodegradation in two different environments (compost and soil), as well as from a morphological, thermomechanical, rheological, and mechanical point of view. The morphology of all the samples was studied before and after biodegradation. The biodegradation rate of the materials was expressed as the percentage of carbon mineralization, and significant changes, especially after exposure in soil, were recorded. The crystallinity of the measured samples indicated that the addition of thermoplastic starch has a negligible effect on PCL-crystallization. The blend with 70% of TPS and a co-continuous morphology demonstrated very fast biodegradation, with the initial rate almost identical to pure TPS in both environments while the 30% TPS blend exhibited particle morphology of the starch phase in the PCL matrix, which probably resulted in a dominant effect of the matrix on the biodegradation course. Moreover, some molecular interaction between PCL and TPS, as well as differences in flow and mechanical behavior of the blends, was determined. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2021 Electronic address https://www.frontiersin.org/articles/10.3389/fmats.2020.00141/full
Number of the records: 1