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A Non-ionic Thermophilic Hydrogel with Positive Thermosensitivity in Water and Electrolyte Solution

Title data

Liu, Fangyao ; Seuring, Jan ; Agarwal, Seema:
A Non-ionic Thermophilic Hydrogel with Positive Thermosensitivity in Water and Electrolyte Solution.
In: Macromolecular Chemistry and Physics. Vol. 215 (August 2014) Issue 15 . - pp. 1466-1472.
ISSN 1521-3935
DOI: https://doi.org/10.1002/macp.201400155

Official URL: Volltext

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

The first example of a chemically crosslinked synthetic non-ionic hydrogel showing reversible positive swelling behavior in pure water as well as electrolyte solution is highlighted. Homopolymeric hydrogels are synthesized from N-acryloylglycinamide with N,N′-methylenbis(acrylamide) as a chemical crosslinker via free radical polymerization in dimethyl sulfoxide (DMSO). The swelling-ratio dependency of the hydrogels upon temperature as well as on the amounts of crosslinker from 1 to 4.8 mol is studied. With 1 mol crosslinker, the hydrogel is able to take up over three times water of its weight at 37 °C in pure water and phosphate-buffered saline. All the samples show almost 100 of reversibility for at least 6 d up to 37 °C irrespective of the amount of the crosslinker, making them promising candidates for biomedical applications. The sample with a higher amount of crosslinker, i.e., 4.8 mol is even stable for over 6 d at 70 °C.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: hydrogels; N-acryloylglycinamide; positive volume phase transitions; upper critical solution temperature
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner
Profile Fields > Advanced Fields > Polymer and Colloid Science
Research Institutions > Research Centres > Bayreuth Center for Colloids and Interfaces - BZKG
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 01 Apr 2015 11:59
Last Modified: 01 Apr 2015 11:59
URI: https://eref.uni-bayreuth.de/id/eprint/9585