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Application of Cotelomer Type Surfactants in the Disperse Dyeing  

Lee, Jae-Ho (Department of Biomaterial Engineering, Pusan National University)
Choi, Hae-Wook (Department of Biomaterial Engineering, Pusan National University)
Jung, Young-Jin (Department of Biomaterial Engineering, Pusan National University)
Hwang, Dae-Youn (Department of Biomaterial Engineering, Pusan National University)
Choi, Young-Ho (Ilshintextile)
Lee, Eon-Pil (Department of Biomaterial Engineering, Pusan National University)
Publication Information
Textile Science and Engineering / v.47, no.1, 2010 , pp. 41-47 More about this Journal
Abstract
Multi-chain surfactants usually form micelles more easily than single-chain surfactants due to their low surface tension and low solubility in water. In this study we prepared cotelomers of multi-alkylated nonionic surfactants with a molecular structure $xR_nMA$-yVA (x; hydrophobic group, y; hydrophilic group, MA; methacrylic ester, VA; vinyl alcohol, R; alkyl group) and investigated their properties as surfactants for the disperse dyeing of cellulose acetate, nylon 6, and PET fibers. Some cotelomers were synthesized via a radical polymerization of vinyl monomers MA and VA using azobisisobutyronitrile (AIBN) as an initiator. The ratio of x/y and degree of polymerization of $xR_nMA$-yVA with an alkyl chain length (n) of 4 or 6 were controlled by adjusting the ratio of thiol to monomers. We found that a cotelomer with a degree of polymerization 9.9 showed better dispersing performances than cotelomer with a degree of polymerization 4.4 or 12.5, and that the degree of dispersion increased to a certain level and then decreased as concentration of cotelomer increased. The highest value of dye uptake for the three fibers was obtained when using a cotelomer with a monomer unit ratio (x/y) of 0.2 and 0.5 g/l of concentration was 0.5 g/l.
Keywords
cotelomer; degree of polymerization; dye uptake; degree of dispersion;
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