| Summary: | 碩士 === 國立臺灣科技大學 === 材料科學與工程系 === 99 === The investigation of Epoxysuccinic Acid (EPSA) and Hexamethylene Diamine (HMDA) contents on physical and thermal properties of modified nylon 6 fibers，and on the dyeability and color fastness of modified PA6 fabric samples are reported in this study. The melting temperatures found for (PA-EPSAx)y HMDAz fiber specimens reduce significantly as their EPSA and HMDA contents increase. The C=O stretching vibration band with a peak wavenumber at 1704 cm-1 appeared gradually on the FTIR spectra of PA-EPSAx specimens with EPSA contents equal to or greater than 1 wt%. This is likely due to the overdosaged EPSA residues that remained in PA-EPSAx specimens without reaction with PA6 molecules. The peak wavenumbers corresponding to the N-H bending vibration, C=O stretching vibration and N-H stretching vibration bands of (PA-EPSAx)y HMDAz shifted significantly after addition of varying amounts of EPSA and HMDA.
The K/S values of (PA-EPSAx)y HMDAz fabrics specimens dyed with acid and reactive dyes at 80 ℃for 1 hour are about 50 to 100% higher than those of the PA6 fiber. The K/S values of (PA-EPSAx)y HMDA z fiber specimens increase dramatically as both EPSA and HMDA contents increasing from 0 to 2 wt%, and then reach an asymptotic value with the further increase in both EPSA and HMDA contents. The color fastness (light, washing, crocking) values of (PA-EPSAx)y HMDAz fiber specimens improved by half and/or one grade better than those of PA6 fibers. Possible reasons accounting for the above interesting dyeing and color fastness properties of (PA-EPSAx)y HMDAz fiber specimens are proposed in this study.
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