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Synthesis and characterization of surface-active antimicrobial hyperbranched polyurethane coatings based on oleo-ethers of boric acid

Authors :
Younes Ahmadi
Mohammad Tahir Siddiqui
Qazi Mohd. Rizwanul Haq
Sharif Ahmad
Source :
Arabian Journal of Chemistry, Vol 13, Iss 1, Pp 2689-2701 (2020)
Publication Year :
2020
Publisher :
Elsevier, 2020.

Abstract

Present study reports a facile synthesis of surface-active antimicrobial hyperbranched polyurethane coatings using oleo-ethers of boric acid (BA) as branching and biocidal moiety (BHPU). The antimicrobial branching center was synthesized via polycondensation reaction of BA and vegetable oil-based diol. The structural characterization of synthesized BHPU and its linear counterpart was investigated using Fourier-transform infrared (FTIR) and nuclear magnetic resonance (1H, 13C, and 11B NMR) spectroscopy techniques. The cured coatings were examined by physico-mechanical, thermogravimetric (TG) analysis and differential scanning calorimetry (DSC). The antimicrobial behavior of these polymers against Gram-positive and Gram-negative bacteria was carried out by well diffusion technique. The appearance of zone of inhibition (ZOI) in case of BHPU confirmed its antimicrobial activity, which arisen due to the presence of cationic moiety in its structure. These investigations showed that the utilization of oleo-ethers of BA as branching agent in synthesis of BHPU coatings induced prominent effect on its physico-mechanical, thermal, and biocidal properties. In addition, soil burial study for 210 days was conducted on BHPU film to confirm its contact-killing mechanism against soil-borne bacteria. These results suggest the potential scope of BHPU in various applications such as long-term antimicrobial surface-active coatings for medical devices, packaging industry, paints, etc. Keywords: Boric acid, Hyperbranched, Polyurethane, Antimicrobial coating, Sustainable polymers

Subjects

Subjects :
Chemistry
QD1-999

Details

Language :
English
ISSN :
18785352
Volume :
13
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Arabian Journal of Chemistry
Publication Type :
Academic Journal
Accession number :
edsdoj.506c5e1e8494252847554ccf6924414
Document Type :
article
Full Text :
https://doi.org/10.1016/j.arabjc.2018.07.001