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Intercalation of ionic liquids into LDH structures for microwave-accelerated polymerizations
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SYSNO ASEP 0575488 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Intercalation of ionic liquids into LDH structures for microwave-accelerated polymerizations Tvůrce(i) Beneš, Hynek (UMCH-V) RID, ORCID
Konefal, Magdalena (UMCH-V) ORCID, RID
Bujok, Sonia (UMCH-V) ORCID, RID
Mrózek, Ondřej (UACH-T) RID, ORCID, SAI
Pavlova, Ewa (UMCH-V) RID
Smržová, Darina (UACH-T) ORCID, SAI, RID
Ecorchard, Petra (UACH-T) SAI, RID, ORCIDZdroj.dok. Inorganic Chemistry. - : American Chemical Society - ISSN 0020-1669
Roč. 62, č. 36 (2023), s. 14694-14703Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova ionic liquid ; intercalation ; layered double hydroxide Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science Vědní obor RIV – spolupráce Ústav anorganické chemie - Anorganická chemie CEP GA22-05244S GA ČR - Grantová agentura ČR LM2023066 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UMCH-V - RVO:61389013 ; UACH-T - RVO:61388980 UT WOS 001063872000001 EID SCOPUS 85170582265 DOI 10.1021/acs.inorgchem.3c02021 Anotace Microwave-accelerated ring-opening polymerization (ROP) of cyclic esters catalyzed by ionic liquid (IL) anions, intercalated into layered double hydroxides (LDHs), has been recently described as a fast and environmentally friendly synthetic way to prepare biodegradable polyester/LDH nanocomposites. However, to observe this synergistic catalytic effect between microwaves and IL anions and to achieve a homogeneous structure of the final polymer nanocomposite, the IL anions must be efficiently intercalated inside the LDH structure. Herein, we investigate the effects of various metal compositions of M2+/Al3+ LDHs (M = Mg, Co, and Ca) and different LDH synthetic routes (one-step direct coprecipitation, two-step coprecipitation/anion exchange, and two-step urea/anion exchange) on the intercalation efficiency of trihexyltetradecylphosphonium bis(2,4,4-trimethylpentyl)phosphinate IL. The most effective IL anion intercalation was observed for Ca2+/Al3+ LDH prepared using the two-step method consisting of coprecipitation and subsequent anion exchange. After optimization, this synthetic pathway led to the production of LDHs with intercalated IL anions and a reduced amount of intercalated water (<0.6 wt %). The catalytic ability of thus optimized LDH particles was demonstrated on the microwave-assisted ROP of ε-caprolactone, showing rapid progress of polymerization. Within minutes, the polycaprolactones with an average molecular mass in the range of 20 000–50 000 g/mol containing fully delaminated and exfoliated LDH nanoparticles were obtained. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2024 Elektronická adresa https://pubs.acs.org/doi/10.1021/acs.inorgchem.3c02021
Počet záznamů: 1