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Polymerization-crosslinking of renewable itaconic acid in water and in deep eutectic solvents
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SYSNO ASEP 0477344 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Polymerization-crosslinking of renewable itaconic acid in water and in deep eutectic solvents Tvůrce(i) Bednarz, S. (PL)
Pólćwiartek, K. (PL)
Wityk, J. (PL)
Strachota, Beata (UMCH-V) RID
Kredatusová, Jana (UMCH-V) RID
Beneš, Hynek (UMCH-V) RID, ORCID
Wesolowska-Pietak, A. (PL)
Kowalski, G. (PL)Zdroj.dok. European Polymer Journal. - : Elsevier - ISSN 0014-3057
Roč. 95, October (2017), s. 241-254Poč.str. 14 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova free radical polymerization ; crosslinking ; hydrogels Vědní obor RIV DM - Tuhý odpad a jeho kontrola, recyklace Obor OECD Environmental sciences (social aspects to be 5.7) CEP 7AMB14PL021 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000414886300020 EID SCOPUS 85029624774 DOI 10.1016/j.eurpolymj.2017.08.020 Anotace Nowadays, the production of polymers from biomass-derived monomers is of large interest. It has the potential to decrease the dependence on non-renewable feedstocks and also could yield methods of synthesis of novel materials with unforeseen properties. We report here results of studies of copolymerization of renewable itaconic acid (IA) with N,N'-methylenebisacrylamide (MBA) in water, as well as in low melting mixtures based on choline chloride (deep eutectic solvent). Both, polymers formed in the pre-gelation period and also hydrogels produced in the post-gelation stage were investigated. 1H NMR, DLS, SEC and elemental analysis indicated that the products isolated before gelation are branched copolymers with hydrodynamic size ranging from 10 to 100 nm and with average monomer composition of 7–9 mol% of MBA. The latter co-monomer was incorporated with 75–95% of unreacted (second) pendant vinyl groups, which can be later used for crosslinking. Post-gelation products (hydrogels) were characterized by gravimetric, DSC and compression–strain measurements. Swelling degree, amount of freezable water, shear moduli and effective crosslink density were determined. The mechanism of the polymeric network formation and its imperfect structure are discussed. It was also shown that polymerization in DES is faster than in water, and gelation occurs in a shorter time. In addition, hydrogels prepared in DES exhibit higher effective crosslink density and lower swelling degree. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2018
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