Preparation of bactericidal PDMS surfaces by benzophenone photo-initiated grafting of polynorbornenes functionalized with quaternary phosphonium or pyridinium groups
EUROPEAN POLYMER JOURNAL, cilt.157, 2021 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 157
- Basım Tarihi: 2021
- Doi Numarası: 10.1016/j.eurpolymj.2021.110669
- Dergi Adı: EUROPEAN POLYMER JOURNAL
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, INSPEC, Metadex, Civil Engineering Abstracts
- Anahtar Kelimeler: Quaternary ammonium, ROMP, Photo, Grafting to , PDMS, Bactericidal , Thiol-ene, BLOCK-COPOLYMERS, STAPHYLOCOCCUS-AUREUS, POLY(ETHYLENE GLYCOL), SILICONE, ANTIBACTERIAL, POLY(DIMETHYLSILOXANE), IMMOBILIZATION, POLYMERS, COATINGS, FACILE
- Yıldız Teknik Üniversitesi Adresli: Evet
Özet
Cationic ROMP-polymers bearing ammonium or phosphonium groups were photo-grafted onto a PDMS surface via the thiol-ene click reaction, in the presence of benzophenone. The PDMS surface was first thiolated using pentaerythritol tetrakis (3-mercaptopropionate) (PTTMP) under UV, in the presence of benzophenone. The obtained cationic surfaces exhibited charge densities above 1014 charge/cm2 and a higher degree of hydrophilicity compared to non-grafted surfaces. The live and dead tests performed by fluorescence microscopy revealed an effective contact bactericidal effect of these surfaces against Escherichia coli and Staphylococcus epidermidis.