陕西科技大学学报（自然科学版）2008，Vol.26Issue(1)：12-17,6.
造纸用季铵盐羧酸型两性淀粉的阴、阳离子取代度的新测量方法:新胶体滴定法
A NEW METHOD FOR QUANTIFYING THE DEGREE OF SUBSTITUTION OF AMPHOTERIC STARCH WITH CARBOXYLIC GROUP AND QUATERNARY AMMONIUM GROUP IN PAPERMAKING:NEW COLLOID TITRATION METHOD
罗明辉 1陆恩锡1
作者信息
- 1. 华南理工大学传热强化与过程节能教育部重点实验室,广东,广州,510640
- 折叠
摘要
Abstract
A new colloid titration method for analyzing the degree of substitute (DS) of amphoteric starch with carboxylic and quaternary ammonium groups is first developed in this work. The cationic or anionic desires will be measured while measuring the oxidized starches of known carboxylic DS or cationic starches of known cationic DS by back titration. The amphoteric starch′s DS will be reached by interpolation method while two calibration equations of the DSes and desires are obtained through the polynomial regression based on the analyzed data. The cationic and anionic DS in the traditional method are 0.032 and 0.022, respectively. Their DS in the New Colloid Titration are 0.033 and 0.018, respectively. In comparison with the traditional method, the new method avoids the variations of the cationic and anionic groups during the analyzing. Thus, when the starch′s complex mechanism is analyzed, the results obtained by the new method are more accurate and reflect the real degree of substitution of the amphoteric starch.关键词
胶体滴定法/两性淀粉/取代度Key words
colloid titration/amphoteric starch/degree of substitute分类
化学化工引用本文复制引用
罗明辉,陆恩锡..造纸用季铵盐羧酸型两性淀粉的阴、阳离子取代度的新测量方法:新胶体滴定法[J].陕西科技大学学报（自然科学版）,2008,26(1):12-17,6.
