pH/温度双敏感淀粉衍生物的制备与溶液性能  

p H/Thermo Dual Responsive Starch Derivative: Preparation and Studying on the Solution Properties

作　　者：袁胥[1] 具本植[1] 

机构地区：[1]大连理工大学精细化工国家重点实验室,辽宁大连116012

出　　处：《精细化工》2014年第11期1385-1389,1416,共6页Fine Chemicals

基　　金：国家自然科学基金(21376041;21076033)~~

摘　　要：该文以N,N-二正丙基（或二正丁基）-2,3-环氧丙胺为叔氨化试剂,制备了具有pH/温度双敏感性的叔氨基淀粉醚。考察了反应温度、反应时间、溶剂用量、NaOH用量对产品的分子取代度以及反应效率的影响,优化了反应条件。当脱水葡萄糖残基（AGU）和叔氨化试剂摩尔比为1：1时,较佳反应条件为：反应温度90oС,n（NaOH）/n（AGU）=0.5,m（H2O）/m（AGU）=4,反应时间12h,在该条件下反应效率为59%,分子取代度为0.59。水溶液的透光率随pH和温度变化,测试结果表明该类叔氨基淀粉醚具有优异的pH/温度双敏感性能,且其浊点随着pH的提高以及烷基碳链的增长而降低。浊点可在14.9~77.7℃精细调控（DBTAS1.19,对应pH=10.75-8.00）。In this work, pH/thermo dual responsive tertiary amine starch ether was prepared using N,N-di-n-propyl/butyl-2,3-epoxylpropylamind as tertiary ammoniation reagent. Influences of the reaction conditions to the molecular degree of substitution of the product （MS） were investigated, which including reaction temperature, reaction time, quantity of solvent and catalyst NaOH. As the ratio of AGU to tertiary ammoniation reagent was 1：1, MS could be 0.59, under the optimum condition, at that time, the reaction condition was temperature 90oC, n（NaOH）：n（AGU）=0.5, m（H2O）：m（AGU）=4, reaction time12h. The result of transmittance of the aqueous solution on different pH showed that this kind of tertiary amine starch has excellent pH/thermo dual responsive property. The cloud points（TC） decreased with the increasing of pH or the length of the carbon chains of alkyl group, which could be adjusted critically in the range of 14.9-77.7℃（DB-TAS 1.19,pH = 10. 75- 8.00, correspondingly）.

关 键 词：叔氨基淀粉醚 N N-二正丙基(或二正丁基)-2 3-环氧丙胺 制备 pH/温度双敏感 浊点 淀粉化学品 

分 类 号：O6-1[理学—化学] O631.4