一种新型磷酸酯淀粉的制备及性能研究  

Study on preparation and properties of a new phosphate starch

作　　者：韩丽[1] 张占柱[1] 

机构地区：[1]河北科技大学纺织服装学院,河北石家庄050000

出　　处：《染整技术》2014年第8期46-48,共3页Textile Dyeing and Finishing Journal

摘　　要：以焦磷酸钠为酯化剂,采用半干法制备具有不同粘度和取代度的磷酸酯淀粉。考察酯化剂、催化剂用量及反应温度、时间、pH等因素对产品取代度和粘度的影响。结果表明,半干法合成磷酸酯淀粉的最佳工艺条件为:反应温度140℃,反应时间90 min,pH 5.0,磷酸盐用量4%,尿素用量1.5%,酸解淀粉盐酸用量1.4%。以上条件下制得的产品粘度为62 mPa·s,取代度为0.004 0%,粘度耐热稳定性为88%。Taking sodium pyrophosphate as esterifying agent, the. phosphate starches with different viscosity and degree of substitution were prepared by a semi-dry process. The effects the amounts of esterifying reagent and catalyst and reaction temperature, time and pH on product degree of substitution and viscosity were investigated. The results indicated that the optimum condition to the prepared phosphate starch was as follows： the reaction temperature 140 ℃, reaction time 90 rain, amount of urea 1.5%, pH 5.0, amount of phosphate 4%, amount of aeidolysis starch hydrochloride 1.4%. Under the above conditions, the viscosity of the product was 62 mPa · s, the degree of substitution was 0.004 0% and the heat-resistant stability of the viscosity was 88%.

关 键 词：磷酸酯淀粉 酯化反应 半干法 粘度 取代度 

分 类 号：TS190.2[轻工技术与工程—纺织化学与染整工程]