Preparation Of Reverse Micelles And Its Application On Dyeing Of Silk Fiber

In this paper, polyoxyethylene ethers nonionic surfactants were applied with cosurfactants to form reverse micelles in organic solvent. By comparing the amount of saturated solubilised water, the TX-10/n-octanol/iso-octane reverse micelle system was selected to perform further research. The ability of the reverse micelles to solubilise water has been employed for the detection of critical micelle concentration ("reverse"CMC). The particle diameters of the reverse micelles were determined with laser dynamic light-scattering method, and the results verified that the reverse micelle system was uniform and stable. The effects of ageing time, temperature, pH value of the"water pool", neutral electrolyte on the stability and saturated solubilised water amount of the reverse micelle system were discussed.Direct, acid and reactive dyes were employed to dye silk fiber in reverse micelle system. The effects of different dyeing processes on dyeing behavior of silk fiber were discussed, such as the pH value of the"water pool", the dosage of inorganic salt and alkali, and W0(mole ratio of H2O to surfactant in organic phase)value.The results of the research showed that, all the direct, acid and reactive dyes applied in the experiments have dyeability for silk in reverse micelle system. The dyeing properties of certain direct dyes on silk fiber in reverse micelle system are superior to that in conventional aqueous dyeing bath. Most reactive dyes also have a high ability to adsorb and fix on silk fiber in reverse micelle system. It was found that the amount of solubilised water-W0 was the most distinct factor among all the dyeing processes, and favourable dyeing results could be achieved at certain W0 value.