Facile and Green Approach towards Electrically Conductive Hemicellulose Hydrogels with Tunable Conductivity and Swelling Behavior
2014 (English)In: Chemistry of Materials, ISSN 0897-4756, E-ISSN 1520-5002, Vol. 26, no 14, 4265-4273 p.Article in journal (Refereed) Published
A one-pot reaction to synthesize electrically conductive hemicellulose hydrogels (ECHHs) is developed via a facile and green approach in water and at ambient temperature. ECHHs were achieved by cross-linking O-acetyl-galactoglucomannan (AcGGM) with epichlorohydrin in the presence of conductive aniline pentamer (AP) and were confirmed by infrared spectroscopy (IR) and elemental analysis. All hydrogels had macro-porous structures, and the thermal stability of ECHHs was improved by the addition of AP. Hydrogel equilibrium swelling ratios (ESRs) varied from 13.7 to 11.4 and were regulated by cross-linker concentration. The ESRs can also be tuned from 9.6 to 6.0 by changing the AP content level from 10 to 40% (w/w) while simultaneously altering conductivity from 9.05 x 10(-9) to 1.58 X 10(-6) S/cm. ECHHs with controllable conductivity, tunable swelling behavior, and acceptable mechanical properties have great potential for biomedical applications, such as biosensors, electronic devices, and tissue engineering.
Place, publisher, year, edition, pages
2014. Vol. 26, no 14, 4265-4273 p.
Biomedical Applications, Polysaccharide Hydrogels, In-Vitro, Thermoresponsive Hydrogels, Thermosensitive Hydrogels, Composite Hydrogels, Aniline Pentamer, Cross-Linking, Polymer, Epichlorohydrin
IdentifiersURN: urn:nbn:se:kth:diva-146867DOI: 10.1021/cm501852wISI: 000339471400030ScopusID: 2-s2.0-84904670901OAI: oai:DiVA.org:kth-146867DiVA: diva2:725957
FunderEU, European Research Council
QC 20140822. Updated from manuscript to article in journal.2014-06-172014-06-172015-11-03Bibliographically approved