摘要
Abstract
Size mixture property of lower viscosity carboxymethyl starch prepared by γ-radiation degradation and carboxymethylation was studied. Carboxymethyl radiation starch was prepared, in conditions of different viscosity, substitution degree, purity and pH value, properties of the sizing and size film were tested. The result shows that characteristic of carboxymethyl radiation starch is higher density and lower viscosity, the viscosity thermal stability and size film property are better. As the decrease of viscosity, the breaking strength and breaking elongation rate of the size film are reduced. As the increase of environment relative humidity,the breaking strength is reduced,and the elongation rate is increased. As the increase of substitution degree, viscosity thermal stability of size mixture is increased, the size film strength is the largest when substitution degree is in 0. 2 to 0. 3. The size film property is improved as the purity increases. Breaking strength of the size film is better when pH value is near neutral. It is considered that lower viscosity carboxymethyl starch prepared by γ-radiation degradation and carboxymethylation can be used for textile sizing.关键词
低黏度/羧甲基淀粉/取代度/黏度热稳定性/浆膜性能/浆料Key words
Low Viscosity/ Carboxymethyl Starch/ Substitution Degree/ Viscosity Thermal Stability/ Property of Size Film/Size Mixture分类
轻工纺织
