Preparation and Characterization of Polyaniline and Ag/ Polyaniline Composite Nanoporous Particles and Their Antimicrobial Activities

Journal Article · Thu Feb 15 04:00:00 EST 2018 · Journal of Polymers and the Environment

DOI:https://doi.org/10.1007/S10924-017-0937-1· OSTI ID:22788269

Shaban, Mohamed; Rabia, Mohamed ^[1]; Fathallah, Walid ^[2]; El-Mawgoud, Neama Abd; Mahmoud, Asmaa; Hussien, Heba; Said, Omnia ^[1]

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1. Beni-Suef University, Nanophotonics and Applications Lab, Physics Department, Faculty of Science (Egypt)
2. Beni-Suef University, Microbiology Laboratory, Botany and Microbiology Department, Faculty of Science (Egypt)

Polyaniline (PANI) and Ag/PANI nanoporous composite were prepared by an oxidative polymerization method. The oxidation process of PANI nanoparticles was occurred using (NH{sub 4}){sub 2}S{sub 2}O{sub 8} while the oxidation process of Ag/PANI nanoporous composite was occurred using AgNO{sub 3} under the effect of artificial radiation. The structural, morphological, and optical properties of the PANI and Ag/PANI nanoporous structures were studied using different characterization tools. The results confirm the formation of polycrystalline nanoporous PANI and spherical nanoporous composite of Ag/PANI particles. Antibacterial activity tests against gram-positive bacteria, Bacillus subtilis and Staphylococcus aureus, and gram-negative bacteria, Escherichia coli, and Salmonella species were carried out using different concentrations of PANI nanoparticles and Ag/PANI nanoporous composites. PANI has not antibacterial effect against all studied pathogens. In contrast, Ag/PANI nanoporous composites possessed antibacterial activity that is identified by the zone of inhibition. The inhibition zones of bacteria are in order; Salmonella species > S. aureus > B. subtilis > E. coli. The inhibition zones of all bacteria increased with increasing concentrations of Ag/PANI nanoporous composites from 200 to 400 ppm then decreased with further increasing of the dose concentrations to 600 ppm. Finally, a simplified mechanism based on the electrostatic attraction is presented to describe the antimicrobial activity of Ag/PANI nanoporous composite.

• OSTI ID: 22788269
• Journal Information: Journal of Polymers and the Environment, Journal Name: Journal of Polymers and the Environment Journal Issue: 2 Vol. 26; ISSN 1566-2543
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANTIMICROBIAL AGENTS
BACILLUS SUBTILIS
CONCENTRATION RATIO
ESCHERICHIA COLI
NANOPARTICLES
OPTICAL PROPERTIES
OXIDATION
PATHOGENS
POLYCRYSTALS
POLYMERIZATION
SALMONELLA
SILVER NITRATES
SPHERICAL CONFIGURATION
STAPHYLOCOCCUS