Dyeing and Antibacterial Property on Cotton Fabric with Neem Leaf Dyes By Using Chitosan as a Fixing agent

Abstract

Currently, there is interested in natural substances to produce value-added and sustainable textile materials. Some substance was extracts from plant can simultaneously dye and provide new properties to textile fibers. Therefore, the study of dyeing and antibacterial property on cotton fabrics with neem leaf dyes by using chitosan as a fixing agent. Storage time of dye liquor, chitosan content, temperature and dyeing time were studied. Color value (K/S), color fastness, stiffness and antibacterial properties were evaluated. The result was found that the optimum conditions for dyeing with neem leaf dyes were extracted from neem leaf with a ratio of neem leaf to water 1:2 at 100°C for 60 minutes. Then filter out of neem leaf and cooling at room temperature. The dyes liquor can be stored in refrigerator for 3 days. Cotton fabrics are treated with chitosan 0.3 %W/V by pad- dry-cure process. Ratio of fabric weight to chitosan 1:50. Then, made dyeing on treated and untreated cotton fabric with neem leaf dyes. The ratio of fabric weight to dye solution 1:50 at 100°C for 90 minutes was used. The result of color fastness testing was found that color fastness to washing was good to very good. Color fastness to rubbing in both dry and wet conditions was good to very good and not effective to stiffness. Antibacterial for Staphylococcus aureus bacteria (Gram positive bacteria) was 97.8 % but not effective for Klebsiella pneumoniae bacteria (Gram negative bacteria).