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Thiazole derivatives‐functionalized polyvinyl chloride nanocomposites with photostability and antimicrobial properties
Author(s) -
Gaballah Samir T.,
Khalil Ahmed M.,
Rabie Samira T.
Publication year - 2019
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.21670
Subject(s) - polyvinyl chloride , nuclear chemistry , nanocomposite , antimicrobial , materials science , silver nanoparticle , fourier transform infrared spectroscopy , nanoparticle , chemistry , organic chemistry , chemical engineering , nanotechnology , engineering
Polyvinyl chloride (PVC) was modified via substitution reaction with 2‐aminothiazole and ethyl 2‐aminothiazole‐4‐carboxylate separately in the absence and in presence of silver (AgNPs) or copper (CuNPs) nanoparticles, using metal salts as precursors, in 3% ( w/w ) with respect to PVC. The functionalized PVC‐nanocomposites have been characterized via FTIR, 1 HNMR spectroscopic analyses, in addition to the morphological investigation such as scanning (SEM) and transmission electron microscopy (TEM). Spectral data confirmed the introduction of the thiazole (ester) to the PVC backbone. TEM analysis showed that the sizes of the AgNPs and CuNPs have fallen in the range of 10–30 nm and 30–50 nm for the prepared nanocomposites, respectively. Evaluating the photostability of modified nanocomposites was estimated by following the extent of discoloration for UV‐irradiated samples colorimetrically in accordance with the irradiation time. The antimicrobial activity of the modified nanocomposites was explored against three Gram+ve bacteria ( Bacillus subtilis, Staphylococcus aureus , and Streptococcus faecalis ), three Gram‐ve bacteria ( Escherichia coli, Neisseria gonorrhoeae , and Pseudomonas aeruginosa ), and two fungi ( Candida albicans and Aspergillus flavus ). Aminothiazole (ester)‐functionalized PVC exhibited significant antimicrobial efficiencies against the investigated pathogens. However, incorporation of AgNPs or CuNPs to the modified PVC enhanced their inhibitory effect against the microorganisms under investigation. J. VINYL ADDIT. TECHNOL., 25:E137–E146, 2019. © 2018 Society of Plastics Engineers