Biomimetic surfaces prepared by soft lithography and vapour deposition for hydrophobic and antibacterial performance

Mehmet Gürsoy, Hilal Testici, Emre Çıtak, Murat Kaya, Hatice Türk Daği, Bahadır Öztürk, Mustafa Karaman*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

This study demonstrates the synthesis of a bioinspired surface exhibiting hydrophobic and antibacterial functionalities using a two-stage synthesis approach which involves soft lithography and initiated chemical vapour deposition (iCVD). Sandpapers, which are inexpensive and available with desired grit size, were used as the moulds in soft lithography to transfer the rough surface patterns to the PDMS replica surfaces. The antibacterial surface modification of the PDMS replicas was done through vapour-phase deposition of thin poly(diethylaminoethyl methacrylate-vinylbenzyl chloride) (P(DEAEMA-VBC)) films by iCVD method from the corresponding monomers. FTIR analysis of the as-deposited films showed a high retention of the chemical functionalities. The hydrophobicity and antibacterial performances of the flat and rough surfaces were examined as a function of surface roughness. The antibacterial activities were tested against gram-negative E. coli and gram-positive S. aureus. It was found that obtained replicas achieved up to a 7-log reduction in bacterial population and showed high hydrophobicity.

Original languageEnglish
Pages (from-to)745-752
Number of pages8
JournalMaterials Technology
Volume37
Issue number8
DOIs
Publication statusPublished - 2022
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2021 Informa UK Limited, trading as Taylor & Francis Group.

Funding

This work was supported by the TUBITAK-British Council Newton-Katip Çelebi [216M448]. This study was supported by the Scientific and Technological Research Council of Turkey (TUBITAK)-British Council Newton-Katip Çelebi Fund with a grant number of 216M448. The authors would like to acknowledge Prof. Dr. J.P.S. Badyal and Dr. G.J. Sharples, University of Durham, for the antibacterial test procedure. This study was supported by the Scientific and Technological Research Council of Turkey (TUBITAK)-British Council Newton-Katip Çelebi Fund with a grant number of 216M448 . The authors would like to acknowledge Prof. Dr. J.P.S. Badyal and Dr. G.J. Sharples, University of Durham, for the antibacterial test procedure.

FundersFunder number
British Council Newton-Katip Çelebi Fund216M448
TUBITAK
TUBITAK-British Council Newton-Katip Çelebi
Durham University
Türkiye Bilimsel ve Teknolojik Araştırma Kurumu

    Keywords

    • antibacterial
    • Biomimicry
    • deaema
    • hydrophobic
    • iCVD
    • sand paper
    • soft lithography
    • vbc

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