Počet záznamů: 1
Structure characterization and biodegradation rate of poly(.epsilon.-caprolactone)/starch blends
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SYSNO ASEP 0524738 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Structure characterization and biodegradation rate of poly(.epsilon.-caprolactone)/starch blends Tvůrce(i) 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, ORCIDČíslo článku 141 Zdroj.dok. Frontiers in Materials. - : Frontiers Media - ISSN 2296-8016
Roč. 7, 5 June (2020), s. 1-14Poč.str. 14 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova poly (epsilon-caprolactone) ; thermoplastic starch ; biodegradation rate Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science CEP NV15-31269A GA MZd - Ministerstvo zdravotnictví TE01020118 GA TA ČR - Technologická agentura ČR TN01000008 GA TA ČR - Technologická agentura ČR LO1507 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000543185200001 EID SCOPUS 85086771326 DOI 10.3389/fmats.2020.00141 Anotace 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. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2021 Elektronická adresa https://www.frontiersin.org/articles/10.3389/fmats.2020.00141/full
Počet záznamů: 1