摘要
在酸催化下, 通过单因素试验和L9 (34) 正交试验, 研究表明壳聚糖与水杨醛缩合反应最佳反应条件为: 80 ℃溶胀2 h , 反应5 h, pH= 40 ~45 , 反应物配比1∶4 , 产率达到90 % 以上。并用分光光度法对缩合反应的缩合率进行定量跟踪。
The condensation conditions of chitosan(CTS)with salicylaldehyde( SHD) have been systematically studied for the first time.On the basis of mono-element researches and by L 9(3 4) orthogonal experiments, the best condensation conditions of CTS with SHD are:using ethanol as solvent,swelling two hours at 80 ℃, reacting 5 hours,pH=4 0~4 5, the mol ratio of CTS/SHD is 1/4,the yield of S-CTS(H) reaches over 90%. Two quantitative measures have been studied through creatively analysing S-CTS(H) by the way of photo-metric analysis for the first time.
出处
《桂林工学院学报》
1999年第4期364-367,共4页
Journal of Guilin University of Technology