Versatile Functionalization of Polyester Hydrogels with Electroactive Aniline Oligomers
2011 (English)In: Journal of Polymer Science Part A: Polymer Chemistry, ISSN 0887-624X, E-ISSN 1099-0518, Vol. 49, no 9, 2097-2105 p.Article in journal (Refereed) Published
Functionalizing aliphatic polyester hydrogels with an aniline oligomer is a means of achieving electrically conductive and degradable hydrogels. To lower the aniline oligomer content while maintaining a high conductivity and to overcome the acidic degradation product from polylactide reported in our previous work, a series of electroactive and degradable hydrogels based on polycaprolactone (PCL) hydrogels and carboxyl-capped aniline pentamer (CCAP) were synthesized by a simple coupling reaction at room temperature. The reaction was carried out between the hydroxyl groups of hydroxyethylmethacrylate in a photopolymerized glycidyl methacrylate (GMA)-functionalized PCL-poly(ethylene glycol)-PCL degradable network and carboxyl group of CCAP, using 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide as water-condensing agent and 4-dimethylamino-pyridine as catalyst. The electroactivity of the hydrogels was verified by cyclic voltammetry, which showed three pairs of redox peaks. The electrical conductivities and swelling ratios of these hydrogels were controlled by the CCAP content, the poly(ethylene glycol) molecular weight in the macromer, and the crosslinking density of the hydrogels.
Place, publisher, year, edition, pages
2011. Vol. 49, no 9, 2097-2105 p.
aniline pentamer, biodegradable hydrogel, biodegradable, conducting hydrogels, conducting polymers, electroactive and degradable polymer, functionalization of polymers, functionalization, hydrogels
IdentifiersURN: urn:nbn:se:kth:diva-32616DOI: 10.1002/pola.24643ISI: 000288966600019ScopusID: 2-s2.0-79953061850OAI: oai:DiVA.org:kth-32616DiVA: diva2:411724
FunderSwedish Research Council, 2008-5538
QC 201104192011-04-192011-04-182011-11-23Bibliographically approved