CAJ | 학술논문

采用微波辅助加热法干法制备阳离子淀粉,详细考察了微波功率、微波辐照时间、氢氧化钠用量和3-氯-2-羟丙基三甲基氯化铵醚化剂（CHPTMA）用量等对反应效率及其产品取代度的影响。结果表明：微波干法合成阳离子淀粉,反应时间短,反应效率高;在NaOH分2次加入、NaOH与淀粉质量比为4.0%、醚化剂用量为淀粉质量的4.5%、水用量为淀粉用量的25.0%、微波功率为450 W及微波辐照时间为3.0 min等条件下,阳离子淀粉取代度为0.037 5,阳离子醚化剂反应效率高达93.76%。
채용미파보조가열법간법제비양리자정분,상세고찰료미파공솔、미파복조시간、경양화납용량화3-록-2-간병기삼갑기록화안미화제（CHPTMA）용량등대반응효솔급기산품취대도적영향。결과표명：미파간법합성양리자정분,반응시간단,반응효솔고;재NaOH분2차가입、NaOH여정분질량비위4.0%、미화제용량위정분질량적4.5%、수용량위정분용량적25.0%、미파공솔위450 W급미파복조시간위3.0 min등조건하,양리자정분취대도위0.037 5,양리자미화제반응효솔고체93.76%。
A dry process assisted by microwave radiation was used to prepare cationic cassava starch,where the effects of microwave power,microwave radiation time,the dosages of NaOH and 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride（CHPTMA） on the reaction efficiency（RE） and the degree of substitution（DS） were investigated.The results showed that,under the assistance of microwave radiation,reaction time can be shortened while the reaction efficiency can be increased.DS of 0.037 5 and RE of 93.76% were achieved under the following conditions： dosage of NaOH,4.0%（w/w） of starch,where the NaOH was divided into 2 parts and delivered respectively in the starch and the CHPTMA;dosage of CHPTMA,4.5%（w/w） of starch;dosage of water,25%（w/w） of starch;microwave power 450 watt;and radiation time,3.0 minutes.