双醛淀粉的合成及其氧化度的测定  

STUDIES ON SYNTHETIONSIS OF DIALDEHYDE STARCH AND DETERMINATI"ON"OF ITS DIALDEHYDE UNIT

作　　者：郑昌戈[1] 姚笑红 何艳辉 郑延华[1] 

机构地区：[1]湘潭大学化学系

出　　处：《湘潭大学自然科学学报》1996年第1期70-73,共4页Natural Science Journal of Xiangtan University

摘　　要：本文介绍用高碘酸氧化淀粉，合成双醛淀粉的情况，并对其氧化度的测定进行了某些探讨．Synthesis for dialdehyde starch by oxidized cornstarches using periodate and determination for its dialdehyde unit has been studied. Best reaction temperaturn of synthesis for dialdehyde stach is 30℃. Availability of oxidizing agent periodate is 93% in lower materi-al proportion. Determination for dialdehyde unit of DAS by volumetric allalysis according to Caflrjizzaro reaction can be easily accomplished.This analytical approach has been calibrated by gravimetric analysis base upon n - nitrobenzophenone derivative of aldehyde group of DAS. The best yield of DAS and the higher dialdehyde unit of periodate oxidized cornstarches will be obtained,when reaction temperature is 30℃ and the material proportion is lower.

关 键 词：双醛淀粉 高碘酸 氧化度 

分 类 号：O636.12[理学—高分子化学]