抄録
In order to obtain fundamental data of solvent dyeing and finishing, the interactions between nylon 6 fiber and several organic solvents are discussed in relation to Tg and swelling behavior of nylon 6 fiber in solvents in comparison with the case of water. Organic solvents used are methanol, ethanol, 1-propanol, trichloroethylene and tetrachloroethylene. The results obtained are as follows:
(1) Tg of nylon 6 fiber in solvents is lowered in the following order; methanol, ethanol, water, 1-propanol, trichloroethylene, and tetrachloroethylene.
(2) The relation of diffusion coefficients and activiation energy of diffusion of organic solvents to their molecular volume showed that chlorinated hydrocarbons have larger diffusion coefficients and smaller activation energy of diffusion than these of alcohols when compared at given molecular volumes. These phenomena could be explained by the affinity of solvents to nylon 6 fiber.
(3) The depression of Tg of nylon 6 fiber in solvents including water was interpreted by the hydrogen bonding ability, affinity and steric factor of the solvent.
