Unexpected irregular structures of poly(itaconic acid) prepared in Deep Eutectic Solvents

Szczepan Bednarz , Grzegorz Kowalski , Rafał Konefał

Abstract

Poly(itaconic acid) (PIA) was synthesized by persulfate initiated free-radical polymerization of ternary Deep Eutectic Solvents (DES) containing equimolar amounts of itaconic acid (IA) as hydrogen-bond donor, quaternary ammonium salt, namely choline chloride (CC) or tetraethylammonium chloride (TEAC) as hydrogen-bonds acceptors, and water as the initiator solvent. The syntheses were carried out at 65 °C for 2 h, and polymers produced were purified by dialysis and by treatment on strong cation exchange resin. The microstructures of the polymers were analysed using 1H, 13C and 1H–13C HSQC NMR spectroscopy. The unexpected methylene and methine groups resulting from decarboxylation and/or branching as well as choline ester moieties were detected as irregular structures in PIA synthesised in IA-TEAC and IA-CC DES, respectively.
Author Szczepan Bednarz
Szczepan Bednarz,,
-
, Grzegorz Kowalski (FoFT / DoEaMiFI)
Grzegorz Kowalski,,
- Department of Engineering and Machinery in Food Industry
, Rafał Konefał
Rafał Konefał,,
-
Journal seriesEuropean Polymer Journal, ISSN 0014-3057, e-ISSN 1873-1945, (N/A 100 pkt)
Issue year2019
Vol115
Pages30-36
Publication size in sheets0.5
Keywords in EnglishFree radical polymerization, Choline chloride, Tetraethylammonium chloride, Deep eutectic solvent, Renewable monomers
ASJC Classification1605 Organic Chemistry; 2507 Polymers and Plastics; 3100 General Physics and Astronomy
DOIDOI:10.1016/j.eurpolymj.2019.03.021
URL https://ac.els-cdn.com/S0014305719301351/1-s2.0-S0014305719301351-main.pdf?_tid=2e9e3818-fcf9-47a6-9da9-c3b1a5e75352&acdnat=1552903674_66c3541cde1f47d60af9dbca5820aed3
Internal identifierWTŻ/2019/23
Languageen angielski
Score (nominal)100
Score sourcejournalList
Publication indicators WoS Citations = 2; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.14; WoS Impact Factor: 2018 = 3.621 (2) - 2018=3.899 (5)
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