Study And Application Of Sucrose Polyester In Fabric Finishing

In recent years, with the improvement of people’s life quality, People·senvironmental protection and health consciousness have been increased, people aremore inclined to the environmental protection and pollution-free products. Sucrosepolyesters （SPEs） which are non-toxic, biodegradable and have no irritation to skinand eye, are causing the people to the attention. SPEs were originally developed in the1960s by P&G scientists for large-scale commercial use as fat substitutes. Thephysical properties and reactivity of sucrose polyesters may be tailored by the degreeof esterification and by choosing the appropriate natural oils to achieve the right fattyacid chain length distribution and unsaturation level. Thus, SPEs offer a uniquechemical platform by controlling their unique molecular architecture and functionaldensity. For years, with the deep study in properties of SPE, they can be use in myriadindustries. Technologists and scientists at P&G think that SPEs can coat or modifysurfaces of fabric to impart Softness benefits. The study and application of SPEs intextiles printing and dyeing are still a gaps at home and abroad up till to now.In this paper,5different structure of SPE emulsion were prepared through thediscussion of emulsification process by using nonionic surfactant Span80and MOA-9as compound emulsifier and the long-term storage stability of SPE （U） emulsionwas studied. Different fabric （cotton, terylene, towel） were treated by5differentstructure of SPEs （Sefose、Sefa、S、1618and U） with different concentrations. Thesoft effect of the fabric finished with sucrose polyester is tested by PhabrOmetersystem, compared with3different softener （TF-432B、TF-564and TF-449B） inmarket. The wrinkle recovery angle and fabric yellowing at different bakingtemperature of cotton were tested. The air permeability, washing fastness andhydrophilicity of cotton and terylene were tested.The HLB value of compound emulsifier was10.4and the ratio of nonionicsurfactant MOA-9and Span80was62:38with emulsion particle size and centrifugalstability（3000r/min） as index. The optimum emulsification conditions of SPE （U） was got by Single facters test as follow: the dosage of compounded emulsifier is6%;Emulsification temperature is90℃; Emulsification time is3min; the type and thedosage of assistant emulsifier are glycerine and4%. Particle size of SPE （U）emulsion was326nm in this emulsification condition. From the long-term storagestability of SPE（U）emulsion, the result show that flocculation cause particle size ofSPE （U） emulsion increase sharply. When the dosage of Synthetic thickener PTF is1.5%, SPE （U） emulsion became paste which odds of droplets collision of emulsioncould be decreased in. SPE （U） could be maintained for3months withoutdelamination and mould.Fabric yellowing at different baking temperature of cotton had a close relationwith unsaturated bond content in molecular structure of SPEs, The more serious fabricyellowing, the more unsaturated bond content. Fabric yellowing of SPEs （1618、Sefa、Sefose and S） were much better than organic silicon softener TF-432B andfatty acid amide TF-449B, less than modified fat hydrocarbon TF-564. Fabricyellowing of SPE （U） was much better than organic silicon softener TF-432B andless than fatty acid amide TF-449B. Compared with blank control, the wrinklerecovery angle of cotton finished by SPEs was improved. Compared with blankcontrol, air permeability of cotton and terylene decreased and with the dosage of SPEsincreasing, air permeability decreased even more. The decrease in air permeability ofcotton and terylene finished by SPE （U） was most pronounced because ofcrosslinking of conjugated double bonds in molecular structure of SPE （U） in air.Washing fastness of cotton and terylene finished by SPE had to be improved andcontact angle of cotton and terylene finished by SPE was over130°. The fabric（cotton, terylene, towel）finished by SPE（S、Sefose、1618and Sefa） had a goodsoft effect and the fabric （cotton, terylene, towel） finished by SPE （U） becamehardened because of film formation in surface of fibers by crosslinking of conjugateddouble bonds in molecular structure of SPE （U）in air. The fabric （cotton, terylene,towel） finished with SPEs （PG1618、PG Sefa、PG Sefose and PG S） as goodsoft as fatty acid amide TF-449B, much better soft than modified fat hydrocarbonTF-564and less soft than organic silicon softener TF-432B.