CAJ | 학술논문

以木薯淀粉为原料，3-氯-2-羟丙基三甲基氯化铵为阳离子醚化剂，自制碱性复合催化剂为醚化催化剂，双氧水为氧化剂，CuSO4为氧化催化剂，采用微波辅助一步法制备氧化阳离子淀粉。通过单因素实验研究醚化剂用量、碱性催化剂用量、氧化剂用量、CuSO4用量、反应温度和反应时间对粘度、取代度和反应效率的影响,并对工艺参数进行优化验证。结果表明，较佳的工艺条件为：淀粉用量200 g，醚化剂用量15 g，碱性催化剂与醚化剂摩尔比1.5，双氧水用量8 g，CuSO4用量0.09 g，反应温度90℃，反应时间18 min。在此条件下所得产品阳离子取代度（DS）为0.0414，醚化反应效率为92.87%，粘度为32.6 mPa·s（固含量12%，55℃）。本工艺制备的淀粉产品具有糊化温度低，糊液粘度低、稳定性高的特点。
이목서정분위원료，3-록-2-간병기삼갑기록화안위양리자미화제，자제감성복합최화제위미화최화제，쌍양수위양화제，CuSO4위양화최화제，채용미파보조일보법제비양화양리자정분。통과단인소실험연구미화제용량、감성최화제용량、양화제용량、CuSO4용량、반응온도화반응시간대점도、취대도화반응효솔적영향,병대공예삼수진행우화험증。결과표명，교가적공예조건위：정분용량200 g，미화제용량15 g，감성최화제여미화제마이비1.5，쌍양수용량8 g，CuSO4용량0.09 g，반응온도90℃，반응시간18 min。재차조건하소득산품양리자취대도（DS）위0.0414，미화반응효솔위92.87%，점도위32.6 mPa·s（고함량12%，55℃）。본공예제비적정분산품구유호화온도저，호액점도저、은정성고적특점。
With cassava starch as raw material, 3-chlorine-2-hydroxypropyl trimethyl ammonium chloride as cationic etherifying agent, homemade alkaline composite catalyst for etherification catalysts, hydrogen peroxide as oxidant, CuSO4 catalysts for oxidation, oxidation of cationic starch were prepared by microwave assisted step method. The effects of the dosage of etherifying agent, alkali catalyst, oxidant and CuSO4, reaction temperature and reaction time on viscosity, degree of substitution and reaction efficiency, were studied by single factor experiment, and the process parameters were optimized. The results showed that the better technological conditions were as followed: starch dosage was 200g, 15g of etherifying agent, mole ratio of alkali catalyst to etherifying agent was 1.5, hydrogen peroxide dosage was 8g, CuSO4 dosage was 0.09g, reaction temperature 90℃ and reaction time 18min. Under these conditions, cationic degree of substitution (DS) was 0.0414, etherification reaction efficiency was 92.87%, the viscosity was 32.6 mPa·s. (solid content was 12%, 55℃). The starch products had low gelatinization temperature, low liquid paste viscosity and high stability.