CAJ | 학술논문

以乙醇溶液为介质，分析乙醇浓度、乙醇用量、反应温度、反应时间、nNaOH/nAGU 、nMCA/nAGU等因素对羧甲基玉米淀粉取代度的影响．通过Box-Behnken实验设计和SAS确定羧甲基玉米淀粉合成的最佳反应条件：乙醇浓度93.5％、反应温度60℃、反应时间265min、nNaOH/nAGU ＝2.6、nMCA/nAGU ＝1.25，在此条件下合成的羧甲基玉米淀粉的取代度为0.914、原糊质量分数为4％时的黏度为6590mPa · s ．
이을순용액위개질，분석을순농도、을순용량、반응온도、반응시간、nNaOH/nAGU 、nMCA/nAGU등인소대최갑기옥미정분취대도적영향．통과Box-Behnken실험설계화SAS학정최갑기옥미정분합성적최가반응조건：을순농도93.5％、반응온도60℃、반응시간265min、nNaOH/nAGU ＝2.6、nMCA/nAGU ＝1.25，재차조건하합성적최갑기옥미정분적취대도위0.914、원호질량분수위4％시적점도위6590mPa · s ．
Using ethanal as medium ,the effects of ethanol concentration ,ethanol dosage ,reaction tem-perature ,reaction time ,nNaOH/nAGU ,nMCA/nAGU and other factors on the substitution degree of carboxym-ethyl corn starch was studied .And according to Box-Behnken experimental design and SAS ,the optimal reaction conditions on carboxymethyl corn starch synthesis was determined :ethanol concentration of 93.5% ,reaction temperature of 60℃ ,reaction time of 265 min ,nNaOH/nAGU of=2.6 ,nMCA/nAGU =1.25 . And under this condition ,carboxymethyl corn starch with the substitution degree of 0 .914 can be made , and w hile the mass fraction of original paste is 4% ,the viscosity of original paste is 6 590mPa · s .