Journal Textile Coloration and Finishing Year / Vol., Issue, Month 2020 / V.32,no.4,Dec Title Development of Filter Replacement Type Mask by Natural Dyeing of Gallnut Authors Minseo Kim, Hyunjoo Song1 and Sohee Lee2* Institution/Affiliations Gyeonsang National University. 1DYETEC Pages/Total page pp.199 ~ 207 / 9 Language Korean Abstract Recently, as the demand for masks increases, the use of filter-replaceable cotton masks is increasing. A filter-replaceable cotton mask is one of the ways to solve the environmental problems of a disposable nonwoven mask because only the filter can be replaced after washing. Cotton fiber products are known to be environmentally friendly, but cotton products dyed with general synthetic dyes are not safe for humans. In this study, to prepare of cotton mask applied with natural dyeing, the optimal dyeing conditions are set when dyeing with gallnut extract. A polychromatic natural dye that changes color by mordant, and the functionalities of gallnut dyeing fabrics are evaluated. The experimental method is dyed the gallnut by temperature and time by concentration to set the optimal conditions. The color fastness rating grade of aluminium potassium sulfate dodecahydrate, copper(ll) sulfate pentahydrate, and iron(ll) chloride tetrahydrate were evaluated after the pre/post mordanting. Keywords Rhus chinensis Mill, Rhus javanica L, gallnut, filter replacement mask, natural dyeing Download   Reference http://koreascience.or.kr/journal/OSGGBT.page?&lang=ko