Uncoupling bacterial attachment on and detachment from polydimethylsiloxane surfaces through empirical and simulation studies

Pan, Fei and Liu, Mengdi and Altenried, Stefanie and Lei, Min and Yang, Jiaxin and Straub, Hervé and Schmahl, Wolfgang W. and Maniura-Weber, Katharina and Guillaume-Gentil, Orane and Ren, Qun. (2022) Uncoupling bacterial attachment on and detachment from polydimethylsiloxane surfaces through empirical and simulation studies. Journal of Colloid and Interface Science, 622. pp. 419-430.

PDF - Published Version
Available under License CC BY (Attribution).


Official URL: https://edoc.unibas.ch/90065/

Downloads: Statistics Overview


Bacterial infections related to medical devices can cause severe problems, whose solution requires in-depth understanding of the interactions between bacteria and surfaces. This work investigates the influence of surface physicochemistry on bacterial attachment and detachment under flow through both empirical and simulation studies. We employed polydimethylsiloxane (PDMS) substrates having different degrees of crosslinking as the model material and the extended Derjaguin - Landau - Verwey - Overbeek model as the simulation method. Experimentally, the different PDMS materials led to similar numbers of attached bacteria, which can be rationalized by the identical energy barriers simulated between bacteria and the different materials. However, different numbers of residual bacteria after detachment were observed, which was suggested by simulation that the detachment process is determined by the interfacial physicochemistry rather than the mechanical property of a material. This finding is further supported by analyzing the bacteria detachment from PDMS substrates from which non-crosslinked polymer chains had been removed: similar numbers of residual bacteria were found on the extracted PDMS substrates. The knowledge gained in this work can facilitate the projection of bacterial colonization on a given surface.
Faculties and Departments:05 Faculty of Science
05 Faculty of Science > Departement Chemie
UniBasel Contributors:Pan, Fei
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
edoc DOI:
Last Modified:20 Oct 2022 07:52
Deposited On:20 Oct 2022 07:52

Repository Staff Only: item control page