南昌大学学报(理科版)
南昌大學學報(理科版)
남창대학학보(이과판)
JOURNAL OF NANCHANG UNIVERSITY(NATURAL SCIENCE)
2013年
6期
548-551,557
,共5页
罗明辉%邓燕芳%卢龙
囉明輝%鄧燕芳%盧龍
라명휘%산연방%로룡
非晶化%交联反应%反应动力学%表观活化能
非晶化%交聯反應%反應動力學%錶觀活化能
비정화%교련반응%반응동역학%표관활화능
Non-crystallization%cross-linking reaction%kinetics%apparent activation energy
以非晶化木薯淀粉为原料,通过湿法交联合成淀粉磷酸酯,研究了非晶化木薯淀粉交联反应动力学过程,计算出表观活化能 Ea,讨论了不同温度对交联反应速率的影响。通过与木薯原淀粉湿法交联对比,研究了非晶化处理对淀粉后续反应的影响。结果表明,非晶化处理后,淀粉交联反应的反应取代度和反应程度均提高,表观活化能降低了23%,反应活性得到大大提高。
以非晶化木藷澱粉為原料,通過濕法交聯閤成澱粉燐痠酯,研究瞭非晶化木藷澱粉交聯反應動力學過程,計算齣錶觀活化能 Ea,討論瞭不同溫度對交聯反應速率的影響。通過與木藷原澱粉濕法交聯對比,研究瞭非晶化處理對澱粉後續反應的影響。結果錶明,非晶化處理後,澱粉交聯反應的反應取代度和反應程度均提高,錶觀活化能降低瞭23%,反應活性得到大大提高。
이비정화목서정분위원료,통과습법교연합성정분린산지,연구료비정화목서정분교련반응동역학과정,계산출표관활화능 Ea,토론료불동온도대교련반응속솔적영향。통과여목서원정분습법교련대비,연구료비정화처리대정분후속반응적영향。결과표명,비정화처리후,정분교련반응적반응취대도화반응정도균제고,표관활화능강저료23%,반응활성득도대대제고。
The starch diphosphate was synthesized by non-crystalline cassava starch through wet process. The influence of temperature on reaction rate was discussed.The kinetics and apparent activation energy of non-crystalline cassava starch in cross-linking reaction were studied.Compared with raw cassava starch,the influence of non-crystallization on consequent reaction was studied.The results showed the degree of sub-stitution and extent of reaction were both increased after non-crystallization,the apparent activation energy was descended by 23%,and the reaction activity was improved.