Open-Cell Aliphatic Polyurethane Foams with High Content of Polysaccharides: Structure, Degradation, and Ecotoxicity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F21%3A43922036" target="_blank" >RIV/60461373:22320/21:43922036 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389013:_____/21:00542526 RIV/60461373:22330/21:43922036

Výsledek na webu

<a href="http://10.1021/acssuschemeng.1c01173" target="_blank" >http://10.1021/acssuschemeng.1c01173</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acssuschemeng.1c01173" target="_blank" >10.1021/acssuschemeng.1c01173</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Open-Cell Aliphatic Polyurethane Foams with High Content of Polysaccharides: Structure, Degradation, and Ecotoxicity

Popis výsledku v původním jazyce

The influence of starch and 2-hydroxyethyl cellulose (HEC) additives on structure, properties, ecotoxicity and (abiotic and biotic) degradation of fully aliphatic (isocyanurate ring-based) polyester-ether polyurethane (PUR) foams is studied. These PUR foams are designed as hydrophilic open-porous materials predisposed to enzymatic hydrolysis with potential application as cellular carriers and alternative nutrient source for activated sludge in wastewater treatment plants. In comparison to the neat (non-modified) PUR foam, the PUR foams with incorporated starch and HEC modifiers exhibited tougher character and slightly increased open-cell content but on the other hand significantly coarser cellular structure with much larger cell size and reduced water absorption. The progress of 6-week abiotic hydrolysis is characterized in detail showing almost a complete decomposition of ester groups, a partial degradation of urethane linkages and fully intact isocyanurate ring. The extent of biodegradation by means of bacteria was very similar for all tested PUR foams, while the fungi biodegradation took place faster for starch and HEC modified PUR foams. However, the leachates from both starch and HEC modified foams exhibited significantly higher ecotoxicity than the leachates from the non-modified PUR foam.

Název v anglickém jazyce

Open-Cell Aliphatic Polyurethane Foams with High Content of Polysaccharides: Structure, Degradation, and Ecotoxicity

Popis výsledku anglicky

The influence of starch and 2-hydroxyethyl cellulose (HEC) additives on structure, properties, ecotoxicity and (abiotic and biotic) degradation of fully aliphatic (isocyanurate ring-based) polyester-ether polyurethane (PUR) foams is studied. These PUR foams are designed as hydrophilic open-porous materials predisposed to enzymatic hydrolysis with potential application as cellular carriers and alternative nutrient source for activated sludge in wastewater treatment plants. In comparison to the neat (non-modified) PUR foam, the PUR foams with incorporated starch and HEC modifiers exhibited tougher character and slightly increased open-cell content but on the other hand significantly coarser cellular structure with much larger cell size and reduced water absorption. The progress of 6-week abiotic hydrolysis is characterized in detail showing almost a complete decomposition of ester groups, a partial degradation of urethane linkages and fully intact isocyanurate ring. The extent of biodegradation by means of bacteria was very similar for all tested PUR foams, while the fungi biodegradation took place faster for starch and HEC modified PUR foams. However, the leachates from both starch and HEC modified foams exhibited significantly higher ecotoxicity than the leachates from the non-modified PUR foam.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20801 - Environmental biotechnology

Projekt

<a href="/cs/project/GA19-08549S" target="_blank" >GA19-08549S: Mikroporézní polyurethany s řízenou rychlostí biodegradace</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ACS Sustainable Chemistry &amp; Engineering

ISSN

2168-0485

e-ISSN

—

Svazek periodika

9

Číslo periodika v rámci svazku

17

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

6023-6032

Kód UT WoS článku

000648430000026

EID výsledku v databázi Scopus

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