A versatile single-electron-transfer mediated living radical polymerization route to galactoglucomannan graft-copolymers with tunable hydrophilicity
2011 (English)In: Journal of Polymer Science Part A: Polymer Chemistry, ISSN 0887-624X, E-ISSN 1099-0518, Vol. 49, no 11, 2366-2372 p.Article in journal (Refereed) Published
Cu(0) mediated living radical polymerization was successfully applied to synthesize graft-copolymers from the hemicellulose acetylated galactoglucomannan. Functionalizing the polysaccharide backbone with Î±-bromo isobutyric acid gave rise to a macroinitiator for single-electron-transfer mediated living radical polymerization (SET-LRP). This macroinitiator with a degree of substitution of 0.15 or 0.20 was used in the graft-SET-LRP of methyl methacrylate in dimethyl sulfoxide as well as N-isopropyl acrylamide and acrylamide in water. Kinetic analyses confirm conversions of up to 73% and a controlled behavior of the SET-LRP process providing high molecular weight hemicellulose-based hybrid copolymers with a brush-like architecture. Derived graft-copolymers varied significantly in solubility properties, ranging from hydrophobic via temperature responsive water-solubility to water-soluble.
Place, publisher, year, edition, pages
2011. Vol. 49, no 11, 2366-2372 p.
Acrylamides; Controlled behavior; Degree of substitution; Galactoglucomannan; hemicellulose; High molecular weight; Hybrid copolymer; hydrophilic polymers; Isobutyric acid; Kinetic analysis; Living radical polymerization; Macroinitiators; Methyl methacrylates; N-isopropylacrylamides; Renewable resource; SET-LRP; Single electron; Solubility properties; Temperature-responsive; Water solubilities, Acrylic monomers; Amides; Atom transfer radical polymerization; Cellulose; Copolymerization; Copolymers; Dimethyl sulfoxide; Esters; Functional polymers; Grafting (chemical); Hydrogels; Hydrophilicity; Single electron transistors; Solubility; Transients; Water resources, Polymers
IdentifiersURN: urn:nbn:se:kth:diva-34259DOI: 10.1002/pola.24666ISI: 000290759400006ScopusID: 2-s2.0-79955371392OAI: oai:DiVA.org:kth-34259DiVA: diva2:419929
QC 201105302011-05-302011-05-302011-06-07Bibliographically approved