节点文献
一种新型絮凝剂的制备与表征
Preparation and Characterization of One Type of New Flocculant
【Author】 LI Yan LONG Zhu (Laboratory of Pulp and Paper,Jiangnan Univeristy,Wuxi,214122)
【机构】 江南大学纺织服装学院造纸技术研发中心；
【摘要】 用共沉淀法制备Fe3O4磁性纳米粒子,并对其用油酸进行表面改性;同时制备羧甲基壳聚糖,继而采用反相悬浮法制备羧甲基壳聚糖磁性微粒。考察了交联剂的种类和羧甲基壳聚糖/改性Fe3O4的质量比等条件对制备微粒的影响。应用透射电子显微镜（TEM）、原子力显微镜（AFM）、红外谱图（IR）、纳米粒度及Zeta电位分析仪（DLS）、热重分析仪（TGA）及震荡样品磁强计（VSM）等对磁性微粒的形态与特性进行了表征。研究结果表明,在适宜的交联剂和羧甲基壳聚糖/改性Fe3O4的质量比等条件下,可以制得大小为5～20nm的球形颗粒、磁性很强且热稳定性良好的壳聚糖磁性微粒。
【Abstract】 The Fe3O4 nano-particles were prepared by co-precipitation method and modified by oleic acid;Then carboxymethyl chitosan magnetic microscopic particles were prepared by inverse suspension method with carboxymethyl chitosan prepared in Lab.The results demonstrated that crosslinker type and the mass ratio of carboxymethyl chitosan and modified Fe3O4 were the most effective parameters for the preparation of the microspheres.The IR and VSM verified that the carboxymethyl chitosan magnetic microscopic particles were successfully synthesized.The AFM,TEM and DLS indicated that the diameter of the microscopic particles were 5～20 nm.The TGA show that carboxymethyl chitosan magnetic microscopic particles have good thermal stability.
【Key words】 Fe3O4； carboxymethyl chitosan； magnetic microscopic particles.；
- 【会议录名称】 ’2010(第十八届)全国造纸化学品开发及造纸新技术应用研讨会(’2010全国造纸化学品开发与造纸新技术应用高层论坛)论文集
- 【会议名称】’2010(第十八届)全国造纸化学品开发及造纸新技术应用研讨会(’2010全国造纸化学品开发与造纸新技术应用高层论坛)
- 【会议时间】2010-04-20
- 【会议地点】中国浙江杭州
- 【分类号】TS727.2
- 【主办单位】中国造纸化学品工业协会(China Paper Chemicals Industry Association)、全国造纸化学品信息站(China Information Center of Paper Chemicals)、化学工业(全国)造纸化学品工程技术中心(Nationwide Eng. &Tech. Center for Paper Chemicals)、杭州市化工研究院(Hangzhou Research Institute of Chemical Technology)