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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/24226

Title: Characterization of methacrylated polysaccharides in combination with amine-based monomers for application in mortar
Authors: Mignon, Arn
Devisscher, Dries
Vermeulen, Jolien
Vagenende, Maxime
Martins, Jose
Dubruel, Peter
De Belie, Nele
Van Vlierberghe, Sandra
Issue Date: 2017
Citation: CARBOHYDRATE POLYMERS, 168, p. 173-181
Abstract: Smart pH-responsive superabsorbent polymers (SAPs) could be useful for self-healing of cracks in mortar. They will swell minimally during the alkaline conditions of mixing, leading to only small macro pores but will swell stronger with a lower pH when water enters the cracks. As such, polysaccharides (alginate, chitosan and agarose) were methacrylated and cross-linked with amine-based monomers (dimethylaminoethyl methacrylate and dimethylaminopropyl methacrylamide) to induce a varying pH-sensitivity. These materials showed a strong cross-linking efficiency and induced moisture uptake capacities up to 122% at 95% relative humidity with a negligible hysteresis. Additionally, interesting pH-responsive swelling capacities were obtained, especially for SAPs based on chitosan and agarose with values up to 110 gwater/gSAP. Most of these materials showed limited hydrolysis in cement filtrate solutions, making them very promising for use in mortar.
Notes: [Mignon, Arn; Vermeulen, Jolien; De Belie, Nele] Univ Ghent, Dept Struct Engn, Magnel Lab Concrete Res, Technol Pk Zwijnaarde 904, B-9052 Ghent, Belgium. [Mignon, Arn; Vagenende, Maxime; Dubruel, Peter; Van Vlierberghe, Sandra] Univ Ghent, Polymer Chem & Biomat Res Grp, Dept Organ & Macromol Chem, Knjgslaan 281,Bldg S4 Bis, B-9000 Ghent, Belgium. [Devisscher, Dries] Hasselt Univ, Design & Synth Organ Semicond, Inst Mat Res, Agoralaan 1 Bldg D, B-3590 Diepenbeek, Belgium. [Martins, Jose] Univ Ghent, Dept Organ Chem, NMR & Struct Anal Unit, Krijgslaan 281,Bldg S4 Bis, B-9000 Ghent, Belgium.
URI: http://hdl.handle.net/1942/24226
DOI: 10.1016/j.carbpol.2017.03.037
ISI #: 000401105000020
ISSN: 0144-8617
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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