Low concentration thermoresponsive hydrogels from readily accessible triblock copolymers. Issue 20 (29th April 2016)

• Record Type: Journal Article
• Authors: Despax, Laurie; Fitremann, Juliette; Destarac, Mathias; Harrisson, Simon
• Is Part Of: Polymer chemistry. Volume 7:Issue 20(2016)
• Page Start: 3375
• Page End: 3377
• Publication Date: 2016-04-29
• Subjects: Polymers -- Periodicals; Macromolecules -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1039/c6py00499g
• Languages: English
• ISSNs: 1759-9954

Abstract

Abstract : Dilute (<1 wt%) aqueous solutions of ultrahigh molecular weight triblock copolymers (with M n up to 500 000 g mol −1 ) comprising a long central hydrophilic block of polydimethylacrylamide and shorter terminal blocks of poly( N -isopropylacrylamide) form gels on heating. Abstract : Dilute (<1 wt%) aqueous solutions of ultrahigh molecular weight triblock copolymers (with M n up to 500 000 g mol −1 ) comprising a long central hydrophilic block of polydimethylacrylamide and shorter terminal blocks of poly( N -isopropylacrylamide) form gels on heating. The incorporation of a charged monomer, 2-acrylamido-2-methylpropanesulfonic acid, into the central block leads to significant improvements in mechanical properties and formation of a crosslinked network at concentrations as low as 0.05 wt%. All monomers and transfer agents used in the study are available on an industrial scale.