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Open-cell aliphatic polyurethane foams with high content of polysaccharides: structure, degradation, and ecotoxicity
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SYSNO ASEP 0542526 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Open-cell aliphatic polyurethane foams with high content of polysaccharides: structure, degradation, and ecotoxicity Author(s) Skleničková, Kateřina (UMCH-V) ORCID, RID
Vlčková, V. (CZ)
Abbrent, Sabina (UMCH-V) RID, ORCID
Bujok, Sonia (UMCH-V) ORCID, RID
Paruzel, Aleksandra (UMCH-V)
Kanizsová, Lívia (UMCH-V)
Trhlíková, Olga (UMCH-V) RID, ORCID
Říhová Ambrožová, J. (CZ)
Halecký, M. (CZ)
Beneš, Hynek (UMCH-V) RID, ORCIDSource Title ACS Sustainable Chemistry & Engineering. - : American Chemical Society - ISSN 2168-0485
Roč. 9, č. 17 (2021), s. 6023-6032Number of pages 10 s. Language eng - English Country US - United States Keywords polyurethane foam ; starch ; hydroxyethyl cellulose Subject RIV CD - Macromolecular Chemistry OECD category Polymer science R&D Projects GA19-08549S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 000648430000026 EID SCOPUS 85106640644 DOI 10.1021/acssuschemeng.1c01173 Annotation Fully aliphatic (isocyanurate ring-based) polyester-ether polyurethane (PUR) foams have been developed, and the influence of starch and 2-hydroxyethyl cellulose (HEC) additives on their structure, properties, ecotoxicity, and (abiotic and biotic) degradation has been studied. These PUR foams designed as hydrophilic open-porous materials are predisposed to enzymatic hydrolysis with potential application as cellular carriers and an alternative nutrient source for activated sludge in wastewater treatment plants. In comparison to the neat (nonmodified) PUR foam, the PUR foams with incorporated starch and HEC modifiers exhibited a tougher character and a slightly increased open-cell content but on the other hand a significantly coarser cellular structure with much larger cell sizes and reduced water absorption. The progress of 6-week abiotic hydrolysis was characterized in detail, showing almost a complete decomposition of ester groups, a partial degradation of urethane linkages, and a fully intact isocyanurate ring. The extent of biodegradation by means of bacteria was similar for all tested PUR foams, while fungus biodegradation was more efficient in starch and HEC-modified PUR foams. The leachates from both starch- and HEC-modified foams exhibited somewhat higher ecotoxicity for higher organisms, here represented by Daphnia magna, due to higher contents of leached substances. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2022 Electronic address https://pubs.acs.org/doi/10.1021/acssuschemeng.1c01173
Number of the records: 1