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Isocyanate-Free, UV-Crosslinked Poly(Hydroxyurethane) Networks: A Sustainable Approach toward Highly Functional Antibacterial Gels
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Polymer Technology.ORCID iD: 0000-0001-7304-6737
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Polymer Technology.ORCID iD: 0000-0002-5850-8873
2017 (English)In: Macromolecular Bioscience, ISSN 1616-5187, E-ISSN 1616-5195Article in journal (Refereed) Published
Abstract [en]

An increased sustainabile awarness has inspired the development of new polymeric networks in a remarkable way and this strive should be combined with environmentally concerned end-uses. Therefore, a UV-crosslinked polyhydroxyurethane film with antibacterial properties is developed. First, a hydroxyurethane precursor is synthesized using aminolysis condensation, circumventing the use of isocyanates. The films are subsequently crosslinked under solvent-free conditions through a UV-triggered thiol-ene mechanism. The reactions are monitored by 1H nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, and Raman spectroscopy, and the networks have gel contents above 90%, and are transparent, hydrophilic, and highly flexible. Antibacterial properties are achieved by a controlled quaternization of the network's tertiary-amine and methylation of thiol-ether functionality, resulting in quaternary ammonium compounds (QACs) and sulfonium compounds. The antibacterial properties are evaluated against both Escherichia coli and Staphylococcus aureus using the agar plate diffusion and tube shaking methods. The QAC-loaded films exhibit outstanding bactericide properties (>99.9%) and the antibacterial mechanism is demonstrated to be a dual killing mechanism, i.e., diffusion killing and contact active killing.

Place, publisher, year, edition, pages
John Wiley & Sons, 2017.
National Category
Polymer Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-214965DOI: 10.1002/mabi.201700190ISI: 000415130800012Scopus ID: 2-s2.0-85033666355OAI: oai:DiVA.org:kth-214965DiVA, id: diva2:1144837
Funder
Swedish Research Council Formas, 2016-00700_3Swedish Research Council, 621201356 25
Note

QC 20171003

Available from: 2017-09-27 Created: 2017-09-27 Last updated: 2018-05-02Bibliographically approved
In thesis
1. Ring-opening Approaches to Functional Renewable Polymers
Open this publication in new window or tab >>Ring-opening Approaches to Functional Renewable Polymers
2018 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
KTH Royal Institute of Technology, 2018
Series
TRITA-CBH-FOU ; 2018:19
National Category
Polymer Chemistry
Identifiers
urn:nbn:se:kth:diva-227039 (URN)978-91-7729-781-9 (ISBN)
Public defence
2018-06-05, F3, KTH Royal Institute of Technology, Lindstedtsvägen 26, Stockholm, 10:00 (English)
Opponent
Supervisors
Funder
Swedish Research Council, 621201356 25Swedish Research Council Formas, 2016-00700_3
Note

QC 20180504

Available from: 2018-05-04 Created: 2018-05-02 Last updated: 2018-05-04Bibliographically approved

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