Natural Dyes by E. Perrin Akçakoca Kumbasar

By E. Perrin Akçakoca Kumbasar

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In (f), (g), and (h), the top and bottom images indicate the top and bottom layers of the cloth model, respectively. The thin gray regions in the Seikaiha pattern (e) indicate regions that were covered with a plastic sheet to prevent dye supply on them; they are not the boundary domain. n is the number of time steps. Dyeing in Computer Graphics Dyeing in Computer Graphics 27 13 6. Conclusion In this article, we introduced physically-based dyeing simulation frameworks. The framework is able to generate a wide range of dyed patterns produced using a folded woven cloth, which are difficult to produce by conventional methods.

Natural dyes are usually moth proof and can replace synthetic dyes in kids garments and food-stuffs for safety. Despite these advantages, natural dyes do carry some inherent disadvantages, which are responsible for the decline of this ancient art of dyeing textiles. 2 Limitation/ disadvantages of natural dyes/ colouants i. It is difficult to reproduce shades by using natural dyes/colourants, as these agroproducts vary from one crop season to another crop season, place to place and species to species, maturity period etc.

The use of copper or ferrous sulphate give high resistance to fading, whereas stannous chloride or alum did not. On the other hand, light fastness is improved when post-mordanting is conducted with copper or ferrous ion, but pre-mordanting is superior in the case of stannous chloride or alum as investigated and reported (Gupta et al, 2004). Harda-tartaric acid combination is found to be the best followed by tannic acid-harda and tartaric acid–tannic acid combinations. Synergistic effect of mordant is observed while using the binary combinations of mordants.

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