Anti-microbial surfaces: An approach for deposition of ZnO nanoparticles on PVA-Gelatin composite film by screen printing technique.
Initially micro-organisms get exposed to the surfaces, this demands development of anti-microbial surfaces to inhibit their proliferation. Therefore, herein, we attempt screen printing technique for development of PVA-GE/ZnO nanocomposite (PG/ZnO) films. The synthesis of PG/ZnO nanocomposite includes two steps as: (i) Coating of Zinc Oxide nanoparticles (ZnO NPs) by poly ethylene glycol in order to be compatible with organic counterparts. (ii) Deposition of coated nanoparticles on the PG film surface. The results suggest the enhancement in anti-microbial activity of PG/ZnO nanocomposite over pure ZnO NPs against both Gram positive Bacillus subtilis and Gram negative Escherichia coli from zone of inhibition. The uniformity in deposition is further confirmed by scanning electron microscopy (SEM) images. The phase identification of ZnO NPs and formation of PG/ZnO nanocomposite has been confirmed by X-ray diffraction (XRD) analysis and UV-vis spectroscopy (UV-vis). The Attenuated total reflection Spectroscopy (ATR) analysis indicates the ester bond between PVA and gelatin molecules. The thermal stability of nanocomposite is studied by thermogravimetric analysis (TGA) revealing increase in crystallinity due to ZnO NPs which could be utilized to inhibit the growth of micro-organisms. The tensile strength is found to be higher and percent elongation is double of PG/ZnO nanocomposite than PG composite film.
Center for Interdisciplinary Research, D. Y. Patil University, Kolhapur 416006, Maharashtra, India.
J V
JV
Meshram
Center for Interdisciplinary Research, D. Y. Patil University, Kolhapur 416006, Maharashtra, India.
V B
VB
Koli
Center for Interdisciplinary Research, D. Y. Patil University, Kolhapur 416006, Maharashtra, India.
M R
MR
Phadatare
Center for Interdisciplinary Research, D. Y. Patil University, Kolhapur 416006, Maharashtra, India. Electronic address: shpawar1946@gmail.com.
S H
SH
Pawar
D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001412:Bacillus subtilis / Q000187:drug effects; D004926:Escherichia coli / Q000187:drug effects; D005780:Gelatin / Q000737:chemistry*; D008826:Microbial Sensitivity Tests; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D011142:Polyvinyl Alcohol / Q000737:chemistry*; D011327:Printing / Q000379:methods*; D013052:Spectrometry, X-Ray Emission; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D013718:Tensile Strength; D013818:Thermogravimetry; D014961:X-Ray Diffraction; D015034:Zinc Oxide / Q000737:chemistry*
D000900:Anti-Bacterial Agents; C015233:gelatin film; D005780:Gelatin; D011142:Polyvinyl Alcohol; D015034:Zinc Oxide
Anti-microbial activity; Nanocomposite; PVA-GE/ZnO; Screen printing technique; Tensile strength