摘要
在模拟人体生理介质的条件下，采用UV法，以238nm为测定波长，分析pH值、水解时间以及放置时间对3，5-二硝基苯甲酸氧化纤维素酯（DCNB）稳定性的影响。研究结果表明，4～6h内，在pH值分别为1、2、8的缓冲溶液中，DCNB的水解率分别为0．06％-0．11％、0．01％-0．03％、3．01％-3．50％。室温放置6个月后，37℃时DCNB对肌酐、尿素的饱和吸附容量与新制的DCNB相比没有发生明显变化。由此证明，DCNB具有较好的稳定性。
The stabilities of dialdehyde cellulose 3,5-dinitrobenzoate （ DCNB ）were studied under simulated biological conditions of human body and determined at 238 nm by UV spectroscopy. The influences of pH value and hydrolysis time on stability of DCNB were studied. The results showed that with 4-6 h in the buffer solution of pH values 1,2,8, the hydrolysis rates of DCNB were 0.06 %-0.11% ,0.01%-0.03 % and 3.01% -3.50 % respectively. After the exposure of DCNB at room temperature for 6 months, the saturated adsorption capacity of DCNB for urea and creatinine didn＇t change compared with new-made DCNB. In conclusion, the DCNB had good stability.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
2009年第B10期97-100,共4页
Chemistry and Industry of Forest Products
基金
高等学校博士学科点专项科研基金资助项目(20060225008)
东北林业大学研究生科技创新项目(无编号)
