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High water-content thermoresponsive hydrogels via electrostatic macrocrosslinking of cellulose nanofibrils
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology. KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center BiMaC Innovation.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology. KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center.ORCID iD: 0000-0003-1161-9311
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2016 (English)In: Journal of Polymer Science Part A: Polymer Chemistry, ISSN 0887-624X, E-ISSN 1099-0518, Vol. 54, no 21, 3415-3424 p.Article in journal (Refereed) Published
Abstract [en]

Atom transfer radical polymerization (ATRP) has been utilized to synthesize tri- and star-block copolymers of poly(di(ethylene glycol)methyl ether methacrylate) (PDEGMA) and quaternized poly(2-(dimethylamino)ethyl methacrylate) (qPDMAEMA). The block copolymers, all with a minimum of two cationically charged blocks, were sequentially used for electrostatic macrocrosslinking of a dilute dispersion of anionic TEMPO-oxidized cellulose nanofibrils (CNF, 0.3 wt%), forming free-standing hydrogels. The cationic block copolymers adsorbed irreversibly to the CNF, enabling the formation of ionically crosslinked hydrogels, with a storage modulus of up to 2.9 kPa. The ability of the block copolymers to adsorb to CNF was confirmed by quartz crystal microbalance with dissipation monitoring (QCM-D) and infrared spectroscopy (FT-IR), and the thermoresponsive properties of the hydrogels were investigated by rheological stress and frequency sweep, and gravimetric measurements. This method was shown to be promising for the facile production of thermoresponsive hydrogels based on CNF.

Place, publisher, year, edition, pages
John Wiley & Sons, 2016. Vol. 54, no 21, 3415-3424 p.
Keyword [en]
ATRP, cationic block copolymer, cellulose nanofibrils, hydrogels, thermoresponsive, Atom transfer radical polymerization, Block copolymers, Cellulose, Electrostatics, Ethylene, Ethylene glycol, Free radical reactions, Infrared spectroscopy, Nanofibers, Quartz crystal microbalances, 2-(dimethylamino)ethyl methacrylate, Cross-linked hydrogels, Gravimetric measurements, Quartz crystal microbalance with dissipation monitoring, Star block copolymer, Thermo-responsive, Thermo-responsive hydrogels
National Category
Polymer Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-195220DOI: 10.1002/pola.28225ISI: 000386657600003ScopusID: 2-s2.0-84988040360OAI: oai:DiVA.org:kth-195220DiVA: diva2:1047396
Note

QC 20161117

Available from: 2016-11-17 Created: 2016-11-02 Last updated: 2016-11-29Bibliographically approved

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Ingverud, TobiasLarsson, EmmaHemmer, GuillaumeRojas, RamiroMalkoch, MichaelCarlmark, Anna
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Fibre and Polymer TechnologyWallenberg Wood Science CenterVinnExcellence Center BiMaC Innovation
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Journal of Polymer Science Part A: Polymer Chemistry
Polymer Chemistry

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CiteExportLink to record
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