羧甲基壳聚糖季铵盐絮凝剂的合成与性能研究  

STUDY OF PREPARATION AND PROPERTY OF CARBOXYMETHYL CHITOSAN QUATERNARY AMMONIUM SALT FL℃CULATION

作　　者：黄欣毅[1] 唐星华[1] 张爱琴[1] 陈科信[1] 

机构地区：[1]南昌航空大学环境与化学工程学院,江西南昌330063

出　　处：《江西化工》2013年第1期74-77,共4页Jiangxi Chemical Industry

摘　　要：先用碘甲烷对壳聚糖(CTS)进行改性,合成具有水溶性的N,N,N—三甲基壳聚糖季铵盐(TMC),然后用一氯乙酸对TMC改性,合成羧甲基壳聚糖季铵盐(CMTMC)。用红外吸收光谱对所合成的物质进行表征,证明CMTMC已被成功合成。用CMTMC对湖水进行絮凝实验,考察絮凝剂加入量、pH、搅拌时间等因素对CMTMC的絮凝效果的影响,实验结果表明:最佳投加量为60mg/L,pH=6.86搅拌时间为慢速搅拌20min,絮凝效果可以达97%以上。Water soluble chitiosan derivatives, N, N, N -tfimethyl -chitosan choride （TMC） synthesized by reaction of chitesan with methyl iodide. And O - carboxymethyl - N - trimethyl chitosan quaternary ammonium salt （ CMTMC ） synthetic by the reaction of the syntheyic of N, N, N -trimethyl chitosan quaternary ammonium salt （TMC） with chloroacetic acid. It can prove the successful synthesis of CMTMC bycharacterization of synthetic material by infrared absorption spectroscopy. F℃ culation experiments to the river water is done by using experimental synthesis CMTMC. The factors of fl℃ culation ca- pacity, such as fl℃ culanting dosage,pH and stirring time, also were discussed. The result shows that the optimized fiT; cula- tion efficiency condition is the optimum dosage of 60 mg/ L,Mixing time for the slow stirring 20rain and pH = 6.86. The fl℃ culation efficiency is above 97%.

关 键 词：壳聚糖 改性 季铵盐 絮凝 

分 类 号：X703.5[环境科学与工程—环境工程]