In order to improve the application effect of starch in the low-temperature sizing of wool warp yarns,oxidized corn starch (OCS)was prepared under alkaline condition and then reacted with etherif-ying agent (dimethylcarbamoyl chloride)to prepare oxidized-tertiary aminated starch (OTAS),which was characterized by scanning electron microscopy (SEM)and energy dispersive x-ray spectrometer (EDS),and the influences of this modification on the solubility,low-temperature viscosity and viscosity stability,low-temperature adhesion,sizingof wool warp,etc.,were estimated.The results showed that the oxidation-tertiary amination of starch could effectively reduce the low-temperature viscosity of starch,improve its solubility,viscosity stability and low-temperature adhesion to wool fibers,enhance the swelling power and solubility of its film,shorten the time required for the break of the film in water,and reduce the film brittleness.With the increase in the degree of substitution,the low-temperature viscosi-ty,solubility,and low-temperature adhesion of OTAS to wool fibers were gradually improved.This lays a foundation for the application of OTAS in the low temperature sizing of wool warp yarns.
维普
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