EFFECT OF BRASI-COLOR DYE ON UV PROTECTION OF BAMBOO KNITTED FABRICS
Journal Title: Annals of the University of Oradea. Fascicle of Textiles, Leatherwork - Year 2018, Vol 0, Issue 2
Abstract
Even natural dyes have several limitations such as high sensitivity to washing, light, pH, and low color strength and seasonal variation, their use is largely encouraged due to their renewability and multi- functional properties. In this study, 100% bamboo knitted fabric was dyed with Brasi-Color, a dyestuff extracted from brazilwood. The UV-VIS spectra demonstrate the presence of brazilin at pH 4 and of brazilein at pH 7 and 10. The molecular structure of the brazilein is changed at higher pH, due to deprotonation at the OH group of C3. The dyeing parameters and their effect on the dye exhaustion were investigated to optimize the dyeing method and to evaluate the ultraviolet protection factor (UPF). The optimal value was selected based on the highest degree of exhaustion, the dyeing uniformity and the highest color intensity. The maximum degree of exhaustion was achieved for 0.05% dye concentration, pH 7, 90 minutes dyeing at 900C. Even mean UPF, UVA and UVB transmission largely depends on process dyeing parameters, all the fabrics demonstrate an excellent UV protective effect (UPF >50+) and a very low transmission on both UVA and UVB region, being able to protect the human body against the harmful effects of UV rays.
Authors and Affiliations
Laura CHIRILA, Elena-Cornelia MITRAN, Iuliana DUMITRESCU, Elena PERDUM, Ovidiu George IORDACHE, Dana STEFANESCU, Mariana PISLARU, Iulian MANCASI
Keywords
Related Articles
- EP ID EP432406
- DOI -
- Views 102
- Downloads 0
COLORING PROPERTIES OF WOOL FABRIC COLORED BY NEW DYESTUFFS - AZOMETHINES
The azomethines have broad applications in food and dyestuff industries, and in analytical chemistry, catalysis and also in the field of agrochemical. These have played an influential part in the improvement of modern co...
ANALYSIS OF THE WORKING CONDITIONS WITH CONSIDERATION-HAZARD POTENTIAL HEALTH AND SAFETY OF EMPLOYEES IN TEXTILE INDUSTRY
Safety and health measures have a very important role in any kind of industry, especially in the textile, which emit a wide range of pollutants at all stages of processing fibers into textile materials. Most processes ha...
CONTRIBUTIONS TO CLASSIFICATION ZIPPERS USED IN INDUSTRY FOOTWEAR AND LEATHER GOODS
Now customary accessory companies of all leather garments, zipper began to enjoy popularity only after 80 years of its invention. The first is considered the inventor of the zipper Elias Howe. Essentially involves fashio...
ASSEMBLY LINE BALANCING in a CLOTHING COMPANY
Assembly lines take the attention of researchers and companies because of its great effect on efficiency. Efficiency in assembly lines has an important role on cost and quality which are the basic fundamentals of competi...
COMPETITIVENESS OF THE PRODUCTS AND ITS IMPACT ON THE STRUCTURE OF EXPORTS - THE CASE OF ROMANIA
The paper analyse the evolution of the competitive advantages of the main products exported by Romania in the 2000-2014 period and the connection between this evolution and the current structure of Romanian exports. In t...