粘度法测定右旋糖苷分子量的影响因素  

Factors affecting the determination of molecular weight of dextran by viscosity method

作　　者：高锦红 马咏梅 范建训 杨珊 Gao Jinhong;Ma Yongmei;Fan Jianxun;Yang Shan(College of Chemistry and Materials,Weinan Normal University,Weinan 714099,China)

机构地区：[1]渭南师范学院化学与材料学院,渭南714099

出　　处：《分析仪器》2024年第6期50-54,共5页Analytical Instrumentation

基　　金：陕西省教育厅重点科学研究计划项目(23JS021);渭南师范学院教育教学改革研究项目(JG202123)。

摘　　要：“粘度法测定高聚物的分子量”是物理化学中的基础实验,实验中一些因素的影响常使实验结果与理想结果的偏差较大。本实验以生物聚合物右旋糖苷为分析对象,研究了粘度法测右旋糖苷分子量的影响因素,包括初始浓度、恒定温度、粘度计、数据拟合方法等,只有严格控制好实验中各个环节,才能保证实验结果的可靠性和准确度。Determination of molecular weight of polymers by viscosity method is a basic experiment in physical chemistry,the influence of some factors in the experiment often leads to significant deviations from ideal results.The biopolymer dextran as the analysis object,the factors affecting the determination of molecular weight of dextran by viscosity method are studied,including initial concentration,constant temperature,viscometer,data fitting method and so on.Only by strictly controlling all aspects of the experiment,can the reliability and accuracy of the experimental results be guaranteed.

关 键 词：粘度法 右旋糖苷 特性粘度 影响因素 

分 类 号：O629.13[理学—有机化学]