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Studies on morphological and structural stability of some antimicrobial film-forming materials, in time

A. PICA1,* , D. FICAI1, A. FICAI1, C. GURAN1, F. DUMITRU2, M. PICA3

Affiliation

  1. Politehnica University of Bucharest, 1-7 Polizu St., 011061, Bucharest, Romania
  2. Research Institute for Advanced Coatings, Theodor Pallady, 49 A, Bucharest, Romania
  3. Carol Davila University of Medicine and Pharmacy, 8 Eroii Sanitari, Bucharest, Romania

Abstract

Film-forming materials described in this study may be used for long term antimicrobial protection of wood, concrete, gypsum boards and other building materials. The materials have antibacterial properties due to the presence of AgNPs (silver nanoparticles) in their composition. The material has the ability to form a nanomodified polymer matrix which generates in the styrene acrylic binder, nanostructured configuration. This gives the composite material properties, feature and superior performance impossible to achieve at a micro scale. AFFM (antimicrobial film-forming materials) were analyzed of structure by FT-IR (Fourier transform infrared spectroscopy) and in morphologically by electron microscopy (SEM/EDX). The introduction of (0.1-0.2)wt%. AgNPs in AFFM produces an optimum improvement in the antibacterial resistance. It has been shown that the new material (AFFM) does not deteriorate even if subjected to an accelerated aging process.. Materials were applied inside a medical unit and found that after 6 months after the application, morphology, structure and biological properties haven't undergone significant changes. Energy dispersive X-ray analysis (EDX) confirmed that AgNPs are well anchored in film-forming material, even after 6 months..

Keywords

Nanoparticles, Antibacterial film forming, Stability.

Submitted at: Jan. 27, 2015
Accepted at: Feb. 10, 2016

Citation

A. PICA, D. FICAI, A. FICAI, C. GURAN, F. DUMITRU, M. PICA, Studies on morphological and structural stability of some antimicrobial film-forming materials, in time, Journal of Optoelectronics and Advanced Materials Vol. 18, Iss. 1-2, pp. 179-184 (2016)