• Textile Coloration and Finishing
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• v.21 no.1
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• pp.38-45
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• 2009

First of all, the properties imparted to PET fabrics are resistance to and recovery from creasing or wrinkling when wet or dry; high resistance to stretch in the filament yarns but not in the staple; high abrasion resistance; good texture and appearance; resistance to heat ageing; good chemical resistance and good resistance, behind glass, to sunlight. But, the low moisture regain of PET fabric conduces to static troubles in textile processing. Furthermore, garments made from PET may, during wear, develop electric charges which attract to the fabric particles of soil(dirt, swarf, dust) flying in the air, so that the cuffs of shirts, for example, become soiled quickly and are not easily laundered clean. The sericin constitutes 25$\sim$30％ of silk protein and surrounds the fibroin fiber with sticky layer that supports the formation of a cocoon. The useful biochemical properties of sericin protein are oxidation resistant, antibacterial, UV resistant, hydrophilic property, and good affinity with hydrophobic material. These properties can be used as an improving reagent or a coating agent for natural and synthetic fibers, fabrics, and other intermediate products. The sericin is also applied to cross-link, and can be blended with other materials. In this study, we modified the surface of PET fabric by mixture of sericin finishing agent; sericin, polyuretane binder and 1,2,3,4-butanetetracarboxylic acid (BTCA) cross-link agent. Also, we investigated the finshing effect; moisture regain, stiffness, handle, drape and electrostatic. The moisture regain of PET fabric treated with sericin finishing agent was higher than that of untreated PET fabric. As a result of evaluating influence about handle of PET fabrics treated with sericin finishing agent, it was confirmed that the sericin finishing agent could be use as a linen like finishing agent.

• Journal of Sericultural and Entomological Science
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• no.11
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• pp.87-94
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• 1970

This study was conducted in order to find out the tendency of sericultural woman's clothes. This data was based on random samples of 183 sericultural women throughout the country, and was derived from the investigation of c1othes (western and Korean-style) which had been made during the years, 1967∼1969. The results obtained are summarized as follows: 1. Western-style clothes were about twice as popular as Korean-style, and more evident among the young women. It was also shown that the ratioes mentioned above were gradually decreased year by year. 2. Most popular among the western-style clothes were blouses, one-piece dresses and skirts. Jogori(coat) and Cheema(long skirt) were favorites among the Korean-styled clothes. One-piece dresses showed increasing tendency of use year by year. 3. Costume-made clothes were much more in number than the home-made and the ready-made types. The home-made and the ready-made clothes increased as the ages increased. 4. Western-styled clothes were popular in summer seasons while Korean-styled clothes were popular in the winter time. Among the western-styled clothes one-pieces dresses and two-piece suits were most popular during the spring through autumn. In Korean clothes the Cheema was popular all year round. 5. Western-style clothes were mostly made of polyester and their blends. Silk was the least used fabric. On the contrary, most of Korean-style clothes were made of silk and their blends. The synthetic fibers showed increasing use year by year. 6. Favorite colors were in order; white, blue, brown, and black in western-style clothes; white, blue, green, and gray were in Korean style clothes. Young women teaded to have a wider preference of colors than the older women.

• Elastomers and Composites
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• v.37 no.4
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• pp.244-257
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• 2002

A thermotropic liquid crystalline polymer(TLCP) which has flexible butylene/hexylene spacers in the main chain and a triad aromatic ester type mesogenic unit containing a naphthyl group was prepared by solution polycondensation. The in-situ composites based on poly(ethylene 2,6-naphthalate) (PEN) and a thermotropic liquid crystalline polymer(TLCP) were prepared and melt spun at different TLCP contents and different draw ratios to produce monofilaments. Blends of the TLCP with PEN were investigated in terms of thermal, mechanical properties and morphology. The TLCP synthesized showed nematic mesophasic behavior and its transition temperature to isotropic melt from mesophase was 249℃. The blends showed well dispersed TLCP phases in the PEN matrix without macroscopic phase separation. Inclusion of TLCP in the blends decreased the cold crystallization temperature of PEN in the blend, therefore, the TLCP acts as a nucleating agent in the blend and showed good interfacial adhesion between the dispersed LCP phases and PEN matrix with domain sizes 40~50 nm in diameter and well developed fibrillation in the monofilaments. The TLCP acted effectively as a reinforcing material in the PEN matrix at the 10wt% level, it led to an increase of initial modulus up to 270% and tensile strength by 235%, while the elongation rate increasing with higher draw ratios.