ThaiScience
ThaiScience
ENGINEERING JOURNAL CHIANG MAI UNIVERSITY
Volume 25, No. 02, Month AUGUST, Year 2018, Pages 113 - 123
Uv protection and antibacterial activity of silk fabrics dyed with sea almond (terminalia catappa) leaves
Mahamasuhaimi Masae, Saijai Wattanasen and Parnumart Choopool
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The objective of this study was dyeing of silk fabrics using sea almond (Terminalia catappa) leaves as a natural dye with ferric chloride (FeCl3) as mordant. The color fastness to washing, perspiration and water of the dyed samples was determined according to AATCC test methods. In this study the UV-protection properties were investigated on silk fabrics. Transmittance measurements were used to calculate the ultraviolet protection factor (UPF). The chemical functional groups of the dyes that were characterized by using fourier transform infrared spectroscopy (FTIR). Antibacterial activity of this dyed silk was confirmed by exposing the fabric to Staphylococcus aureus and Escherichia coli. The fabric dyed with sea almond (Terminalia catappa) leaves extract mordanted with FeCl3 reduced the number of viable organisms by 98% and 99% respectively. Silk fabric dyed with sea almond leaves had a shade of brown, while those mordanted with ferric chloride of black color shade. Our results revealed that color fastness to washing, perspiration and water was fair to very good level. The UV protection characteristics were also excellent protection. These extracts gave polyphenolic and tannin. Therefore, it was suggested that sea almond leaves dye has the potential in producing functional dyes that could be imparted into the silk dyeing natural colourant system.
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Published by : Faculty of Engineering Chiang Mai University
Contributions welcome at : http://researchs.eng.cmu.ac.th/?name=journal
