Study On Crease-resistant Finishing Of Soybean Fiber

In this article, the effect of anti-crease finishing of soybean fiber treated with different kinds of finishing agents was discussed, such as glyoxal resin, epoxy resin, polyurethane, twain-aldehyde compound, polycarboxylic acid and so on. The influence of finishing agents dosage, curing temperature, curing time, types of agents and dosage of catalysts and softening agents on anti-crease finishing effects of soybean fabric was also discussed. The optimized finishing processes of different finishing agents were acquired through testing crease recovery angles, breaking strength, gas permeability and whiteness of soybean fabric under different finishing conditions. After finishing some tests were carried out on the structure, dyeing behavior, the stability to alkali and thermal stability of treated fabrics through DSC, TG, FT-IR, SEM,etc.The results showed that the crease recovery angles and whiteness of soybean fabric treated with easy-care resin FR-E, glyoxal and epoxy resin RF-01 were remarkably improved. The dry crease recovery angles of fabrics treated with above finishing agents were increased by 30% approximately, while the wet crease recovery angles of treated fabrics were increased by 55%~65% or so. At the same time, the breaking strength and the alkali-resistant property of finished fabric were to a certain extent unproved and the uptake of acid dyes was enhanced correspondingly. However, the gas permeability of finished fabric was to a certain extent decreased.In addition, from the figures of WAXD and photographs of SEM of treated and untreated fibers, it was shown that crystal structures of finished fabrics were hardly changed, however, the cross-section configuration of finished fabric was apparently changed and many unevenly distributed micro-holes occurred on the cross-section. The particle-deposition was generated on fiber surface, so the relative moving and sliding of macromolecules of fiber was restricted. Hence, the effect of anti-crease finishing was achieved. Moreover, DSC and FT-IR analyses also showed that the thermal stability of finished fiber was unproved to a certain extent. The stretching- vibration-absorption-peak positions of some groups were slightly deviated. Their intensity also increased in differentdegrees. The absorption peaks of new groups generated from some cross-linking reactionswere found in the FT-IR spectra.