A solvent induced crystallisation method to imbue bioactive ingredients of neem oil into the compact structure of poly (ethylene terephthalate) polyester

Wazed Ali, S. and Sultana, Parveen and Joshi, Mangala and Rajendran, Subbiyan (2016) A solvent induced crystallisation method to imbue bioactive ingredients of neem oil into the compact structure of poly (ethylene terephthalate) polyester. Materials Science and Engineering C, 64. pp. 399-406. ISSN 0928-4931

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Official URL: http://www.sciencedirect.com/science/journal/09284...

Abstract

Neem oil, a natural antibacterial agent from neem tree (Azadarichtaindica) has been used to impart antibacterial activity to polyester fabrics. Solvent induced polymer modification method was used and that facilitated the easy entry of neem molecules into the compact structure of polyethylene terephthalate (PET) polyester. The polyester fabric was treated with trichloroacetic acid-methylene chloride (TCAMC) solvent system at room temperature prior to treatment with neem oil. The concentration of TCAMC and the treatment time were optimised. XRD and SEM results showed that the TCAMC treatment causes polymer modification and morphological changes in the PET polyester. Antibacterial activity of TCAMC pre-treated and neem-oil-treated polyester fabric was tested using AATCC qualitative and quantitative methods. Both Gram-positive and Gram-negative organisms were used to determine the antimicrobial activity. It was observed that the treated fabric registers substantial antimicrobial activity against both the Staphylococcus aureus (Gram-positive) and the Escherichia coli (Gram-negative) and the effect increases with the increase in concentration of TCAMC treatment. The antibacterial effect remains substantial even after 25 launderings. A kinetic growth study involving the effect of antibacterial activity at various incubation times was carried out.

Item Type: Article
Uncontrolled Keywords: Antibacterial; Neem oil; Polyester; Pre-treatment; Solvent induced polymer modification; Trichloroacetic acid
Subjects: T Technology > T Technology (General)
Divisions: University of Bolton Research Centres > Institute for Materials Research and Innovation
Depositing User: Sarah Taylor
Date Deposited: 03 May 2016 13:38
Last Modified: 03 May 2016 13:38
Identification Number: 10.1016/j.msec.2016.04.002
URI: http://ubir.bolton.ac.uk/id/eprint/851

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