Antibacterial coating of substrates based on cationic biocides-enhanced thin films of selected polystyrene-based copolymers
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13420%2F25%3A43899357" target="_blank" >RIV/44555601:13420/25:43899357 - isvavai.cz</a>
Alternative codes found
RIV/44555601:13440/25:43899357
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0142941825003344?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0142941825003344?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.polymertesting.2025.109020" target="_blank" >10.1016/j.polymertesting.2025.109020</a>
Alternative languages
Result language
angličtina
Original language name
Antibacterial coating of substrates based on cationic biocides-enhanced thin films of selected polystyrene-based copolymers
Original language description
Developing antimicrobial coatings is an important challenge nowadays, significant for managing microbial contamination across various applications, including medical devices, food packaging, and waste management. This study examines the preparation, modification and characterization of specific polystyrene-block-polyisoprene-block-polystyrene (SIS) and polystyrene-block-polybutadiene-block-polystyrene (SBS) thin polymer films modified by selected cationic biocides (CB), namely chlorhexidine (CHX) and dodecyltrimethylammonium bromide (DTAB). Two approaches were used to prepare and modify polymer films. First, CBs were added directly to the polymer solution. Second, pristine samples were exposed to plasma or UV radiation and afterwards immersed in an ethanol solution of CBs. Morphology, chemical structure and surface properties of the samples were characterized. Furthermore, their stability was evaluated, with a focus on their antibacterial activity and adhesion to selected substrates. The antibacterial activity of films improved when modified with CHX, as demonstrated by testing against Escherichia coli and Staphylococcus aureus. Specifically, one of the CHX-modified samples resulted in a bacterial survival rate of only 0.2 % in comparison with the control, less than the survival rates observed in DTAB-modified samples. Surface characterization revealed that lower zeta potential and contact angle values exhibited a correlation with higher hydrophilicity and antimicrobial activity, especially for CHX-modified films. Particularly the effect of surface charge is significant and plays a vital role. This work demonstrates several positive results of incorporating antibacterial agents into a polymer matrix. It also provides new insights into these materials as potential antibacterial coatings for a wide range of applications.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10404 - Polymer science
Result continuities
Project
<a href="/en/project/EH22_008%2F0004558" target="_blank" >EH22_008/0004558: Advanced MUltiscaLe materials for key Enabling Technologies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Polymer testing
ISSN
0142-9418
e-ISSN
1873-2348
Volume of the periodical
2025
Issue of the periodical within the volume
153
Country of publishing house
GB - UNITED KINGDOM
Number of pages
12
Pages from-to
"nestrankovano"
UT code for WoS article
001608449100001
EID of the result in the Scopus database
2-s2.0-105020951969