초록
Citric acid was used to improve the wrinkle recovery of ramie fabrics. The effect of curing conditions, citric acid concentration, and triethanolamine (TEA) amount on the wrinkle recovery of the fabrics were investigated. The wrinkle recovery increased with the curing time, curing temperature, and citric acid concentration and changed little up to 5％ of TEA amount but decreased afterwards. FT-IR was used to study the degree of reaction between ramie cellulose and citric acid. Ester carbonyl band absorbance ratio and carbonyl band intensity ratio showed that the ester crosslinking increased with the curing time, curing temperature, and citric acid concentration and changed little up to 5％ of TEA amount but decreased afterwards. The mechanical properties of treated fabrics such as breaking strength, tearing strength, and abrasion resistance were also investigated. The mechanical properties were deteriorated seriously with the citric acid treatment. One reason for the deterioration could be uneven distribution of crosslinking due to some structural characteristics such as nodes in ramie fibers. The deterioration of mechanical properties, however, could be prevented to a certain degree by using TEA.
