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Smart secondary polyurethane dispersions

Title data

Chen, Fei ; Hehl, Judith ; Mattheis, Claudia ; Greiner, Andreas ; Agarwal, Seema ; Su, Yu:
Smart secondary polyurethane dispersions.
In: Polymer International. Vol. 62 (December 2013) Issue 12 . - pp. 1750-1757.
ISSN 0959-8103
DOI: https://doi.org/10.1002/pi.4481

Official URL: Volltext

Project information

Project financing: Bundesministerium für Bildung und Forschung
Financial support from the Department of Chemistry, Phillips-University Marburg

Abstract in another language

Secondary dispersions of cationic segmented polyurethanes (PUs) with thermoresponsivity (upper critical solution temperature (UCST) in water), high solid contents and antibacterial properties are highlighted in this paper. PUs were prepared by polyaddition reactions and subsequent quaternization with methyl iodide. No additional stabilizers, organic solvents or special procedures were required to obtain stable aqueous dispersions containing up to 10wt% PU; in contrast, stable dispersions were straightforwardly accessed by a combination of UCST behavior and repulsive electrostatic forces among the positively charged segments, which meets the requirements of a green chemistry process. Particle size and UCST strongly depended on the solid content of the dispersions and the content of poly(ethylene glycol) segments in the copolymers. The dispersions exhibited fast-acting antibacterial properties against Escherichia coli. (c) 2013 Society of Chemical Industry.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: polyurethane; antibacterial; dispersion; UCST; thermoresponsive
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner
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
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 10 Mar 2015 12:01
Last Modified: 31 Mar 2015 08:14
URI: https://eref.uni-bayreuth.de/id/eprint/7998