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Superabsorbent hydrogels made from bio-sourced butyrolactone monomer in aqueous solution

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dc.title Superabsorbent hydrogels made from bio-sourced butyrolactone monomer in aqueous solution en
dc.contributor.author Luk, Sharmaine B.
dc.contributor.author Kollár, Jozef
dc.contributor.author Chovancová, Anna
dc.contributor.author Mrlík, Miroslav
dc.contributor.author Lacík, Igor
dc.contributor.author Mosnáček, Jaroslav
dc.contributor.author Hutchinson, Robin A.
dc.relation.ispartof Polymer Chemistry
dc.identifier.issn 1759-9954 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2017
utb.relation.volume 8
utb.relation.issue 39
dc.citation.spage 6039
dc.citation.epage 6049
dc.type article
dc.language.iso en
dc.publisher Royal Society of Chemistry
dc.identifier.doi 10.1039/c7py01397c
dc.relation.uri http://pubs.rsc.org/-/content/articlelanding/2017/py/c7py01397c#!divAbstract
dc.description.abstract A new water-soluble monomer, sodium 4-hydroxy-4-methyl-2-methylene butanoate (SHMeMB), formed by saponification of the bio-derived monomer γ-methyl-α-methylene-γ-butyrolactone (MeMBL), was copolymerized with acrylamide (AM) in aqueous solution to make superabsorbent hydrogels with equilibrium degree of swelling in the range of 6700-59&000%, depending on monomer ratio and crosslink density. Mechanical strength and storage and loss moduli of the hydrogels were tunable over a wide range through adjustment of the comonomer composition and the crosslinker content. Monomer reactivity ratios of rSHMeMB = 0.12-0.17 and rAM = 0.95-1.10 were determined using copolymer compositions measured at low monomer conversion as well as by applying the integrated form of the Mayo-Lewis equation to fit the drift in comonomer composition with conversion. The reactivity of the SHMeMB&:&AM system was lower than that of the previously-studied SHMB&:&AM system, with sodium 4-hydroxy-2-methylene butanoate (SHMB) derived from a similar renewable monomer, α-methylene-γ-butyrolactone (MBL). The differences in reactivity were studied by pulsed laser polymerization coupled with size exclusion chromatography; the comonomer-Averaged propagation rate coefficient of the SHMB&:&AM system was found to be more than double that of SHMeMB&:&AM, with first estimates for the SHMeMB and SHMB homopropagation rate coefficients of 25 and 165 L mol-1 s-1, respectively, at 60 °C. Despite its lower reactivity, SHMeMB offers advantages over SHMB due to its availability and as superior overall properties of the final hydrogels were achieved. This journal is © The Royal Society of Chemistry. en
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1007536
utb.identifier.obdid 43877150
utb.identifier.scopus 2-s2.0-85031306328
utb.identifier.wok 000412772700004
utb.source j-scopus
dc.date.accessioned 2018-01-15T16:31:24Z
dc.date.available 2018-01-15T16:31:24Z
dc.description.sponsorship European Regional Development Fund through project POLYFRIEND, within Hungary-Slovakia Cross-border Co-operation Programme [HUSK 1101/1.2.1/0209]; Slovak Academic Information Agency (SAIA) [VEGA 2/0158/17]; Natural Sciences and Engineering Research Council of Canada (NSERC)
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Mrlík, Miroslav
utb.scopus.affiliation Queen's University, Department of Chemical Engineering, 19 Division St, Kingston Ontario, Canada; Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava, Slovakia; Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Nad Ovcirnou 3685, Zlin, Czech Republic
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