A facile and versatile route for preparation AgNp nanocomposite thin films via thiol-acrylate photopolymerization: Determination of antibacterial activity

• Published in: Progress in organic coatings Vol. 143; p. 105620
• Main Authors: Adibelli, Melisa, Ozcelik, Elif, Batibay, Gonul S., Arasoglu, Tulin Ozbek, Arsu, Nergis
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01.06.2020; Elsevier BV
• Subjects: Antibacterial activity; Antimicrobial agents; Bacteria; E coli; Functional coatings; Nanocomposites; Nanoparticles; Photoinitiators; Photopolymerization; Polymers; Silver; Silver nanoparticles; Silver nitrate; Thin films; Thiophenol; Thioxanthenone; Ultraviolet radiation; Functional coatings; Antibacterial activity; Nanocomposites; Photopolymerization; Silver nanoparticles
• ISSN: 0300-9440; 1873-331X
• DOI: 10.1016/j.porgcoat.2020.105620

[Display omitted] •Synthesis of POSS-TX was achieved using TXOCH2COOH and POSS-NH2.•Inititiation efficiency of POSS-TX was examined for the photopolymerization of methyl methacrylate.•POSS-TX initiates polymerization of MMA in air atmosphere at considerably low concentration. Size, shape and distribution-controlled silver nanoparticles (AgNps) were produced by a rapid and efficient method either in solvent or in polymer matrix by which the silver ion is reduced and a polymer matrix is simultaneously generated in the presence of various photoinitiators by the means of UV light. 2-Mercaptothioxanthone (TX-SH), Thioxanthone (TX) and TX + Thiophenol were used as photoinitiator systems for the polymerization of PEGMEA/PEGDA monomer mixture in the presence of AgNO3 salt. As a summary of results, it is important to note that the size and distribution of Nps depend on the photoreducing species. Therefore TX-SH, due to thiol functionality in its structure, helped production of he 7–40 nm size and distribution-controlled AgNps in polymer matrix. In-situ prepared AgNps/Polymer nanocoatings exhibited a reflected silver mirror view as a result of aggregation depending on the irradiation time. Antibacterial efficiency and susceptibility of AgNps containing nanocomposite films were examined for t E. coli, P. aeruginosa, S. aureus and B. cereus. Obtained antimicrobial results show that photochemically prepared nanocomposites considerably increase the antimicrobial activity on Gram negative bacteria compared to Gram positive bacteria.