2003, Vol.15, No.3

Textile Coloration and Finishing KCI Impact Factor : 0.0

pISSN : 1229-0033 / eISSN : 2234-036X
https://journal.kci.go.kr/ksdf

was solution-polymerized in dimethyl sulfoxide(DMSO) and tertiary butyl alcohol(TBA) at 30, 40, 50℃ using a low temperature initiator, 2,2'-azobis(2,4-dimethylvaleronitrile) (ADMVN). The low temperature polymerization using ADMVN, DMSO, and TBA is to be successful in obtaining high molecular weight polyacrylonitrile(PAN) with less branches by solution polymerization. Through a polymerization of AN in DMSO at 30℃, PAN having viscosity-average molecular weight(Mv) of 931,000 was obtained. And then, during AN solution polymerization in DMSO and TBA using a cosolvent system, the in-situ formation of microfibrillar structure has been discovered at the cosolvent composition of 24/1(VDMSO/ VTBA). The simultaneous process of gelation and phase separation of long chain molecules may explain the in-situ formation of PAN fibers during polymerization.

terephthalate)] fibers was annealed by passing on the plate heater to illuminate the effects of annealing on the alkaline hydrolysis behavior properties with varying the treatment temperature for 0.5 second. The L010 and crystallinity were increased with increases in temperature. With the increases of the temperature, the dynamic viscoelastic behaviors were analyzed to be reduction in Tmax(tanδ). The weight loss in alkaline solution was two times more rapid for the PTT annealed at 200℃ than the control samples. The kinetics of hydrolysis was confirmed that the hydrolysis of the PTT fibers in the alkaline solution was started from the surface of the fibers and selective to the amorphous region in continuation, on the basis of the results of the increase in crystallinity and the decrease in dye uptake at the initial stage of the hydrolysis.

purpose of this study is searching the Elm-Bark dyes' dyeability and antibacterial activities according to the dyeing time, pH, a mordant and the method of mordancy. We used two kinds of Elm-Bark dyes which's extracted by the Electrolytic reduction water and Distilled water. Silk fabric and Cotton/nylon union fabric was used for this study. The results are as follow. K/S value is increased according to the dyeing time and the suitable pH level is pH 3. Dyeability is good with Iron(Ⅱ) sulfate(FeSO4·7H20) on the pre-mordancy and Potassium dichromate(K2Cr2O7)on the post-mordancy. The Elm-Bark dyes by the Electrolytic reduction water has good colorfastness more than by the Distilled water. Antibacterial activities is excellent and the ratio is over than 99.5%