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Hong K.H.,Chonnam National University | Kim S.,Korea Textile Inspection and Testing Institute
Fibers and Polymers | Year: 2011

Performing the right antibacterial testing definitely has become one of the most critical aspects in evaluating the antimicrobial abilities of the textile materials. However, antimicrobial testing is by nature complex, delicate, and laborious. Therefore most of antimicrobial analysis methods, either antibacterial or antifungal, rely on subjective assessments. In this study, an image analysis method has been developed to count the colonies during the process of antibacterial test for textile materials. The reliability of the the software was investigated by comparing the result of image analysis with that of manual counting, which showed that the reliability of the newly proposed method was sufficiently high. © 2011 The Korean Fiber Society and Springer Netherlands. Source


Hong K.H.,Korea Textile Inspection and Testing Institute | Sun G.,University of California at Davis
Carbohydrate Polymers | Year: 2011

Photoactive antimicrobial cotton fabrics were produced by chemically incorporating 3,3′,4,4′-benzophenonetetracarboxylic dianhydride (BPTCD) onto the fibers through a pad-dry-cure finishing process. An esterification reaction between anhydride group of BPTCD and hydroxyl group of cotton cellulose was promoted by a catalyst under elevated temperature. The structural features and functional properties of the BPTCD treated cotton fabrics were investigated by FTIR, XRD, SEM, TGA and antimicrobial testing. Results showed that the BPTCD treated cotton fabrics display excellent antimicrobial functions under UVA (365 nm) light, and also the treatment does not damage the mechanical properties of the cotton fabric. © 2010 Elsevier Ltd. All rights reserved. Source


Hong K.H.,Korea Textile Inspection and Testing Institute | Bae J.H.,Korea Textile Inspection and Testing Institute | Jin S.R.,Korea Textile Inspection and Testing Institute | Yang J.S.,Korea Textile Inspection and Testing Institute
Cellulose | Year: 2012

Extracts from the root of Lithospermum erythrorhizon (gromwell) have been used for many centuries as a natural red dye and crude drugs with excellent performance for wound healing. In particular, shikonin a major constituent of the gromwell colorant is reported to possess antibacterial, antioxidant, anti-inflammatory, antitumor activities, etc. Therefore, we tried to manufacture antimicrobial and antioxidant cotton fabrics for biocompatible clothing materials using the natural stuff and environmentally friendly process. In this study, cotton fabrics were dyed with the colorant extracted from the root of gromwell, and their properties were closely investigated. Consequently, we discovered that the cotton fabrics dyed with the extracts from the root of gromwell showed excellent antioxidant performance as well as antibacterial ability. Also, the functionalities and color fastness were improved by gallnut mordanting and cationization of the cotton fabrics. © 2011 Springer Science+Business Media B.V. Source

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