药物载体淀粉微球的制备及表征.pdf
文本预览下载声明
第24 卷第1期 精 细 化 工 Voi. 24 ,No . 1
2 0 0 7 年1 月 FINE CHEMICALS Jan. 2 0 0 7
淀粉化学品
药物载体淀粉微球的制备及表征*
*
王 磊,李仲谨 ,赵新法,赖小娟
(陕西科技大学 化学与化工学院,陕西 咸阳 7 12081)
摘要:选用V(环己烷)1 V(三氯甲烷)= 4 1 1 构成混合油相,淀粉水溶液为水相,m (Span 60 )1m (Tween 60 )= 3 12
复配为乳化剂,N ,N -亚甲基双丙烯酰胺为预交联剂,环氧氯丙烷为交联剂,采用反相乳液聚合方法制备了淀粉
微球;用粒度分析仪、扫描电镜、红外光谱等对产物进行了表征。结果表明,淀粉微球平均粒径为14. 7 !m ,83%
分布在6 ~ 30 !m ,球形圆整,表面光滑致密,可作为良好的药物载体和吸附剂。通过单因素实验和正交设计实
验考察了制备条件对微球理化性质的影响,推导出平均粒径与主要影响因素之间的多项回归方程,以期通过优
化工艺条件实现对微球制备的预测和控制。
关键词:
N ,N -亚甲基双丙烯酰胺;淀粉微球;表征;反相乳液聚合
中图分类号:
0636. 12 文献标识码:A 文章编号:1003 - 5214 (2007 )01 - 0086 - 05
Preparation and Characterization of Starch Microspheres as Drug-carrier
WANG Lei ,LI Zhong-jin *,ZHA0 Xin-fa ,LAI Xiao-juan
(College of Chemistry and Chemical Engineering ,Shaanxi Uniuersity of Science Technology ,Xianyang 7 12081,Shaanxi ,China )
Abstract :Using cyciohexane and chioroform 〔V(cyciohexane )1 V(chioroform )= 4 1 1 〕as oii phase ,
starch soiution as agueous phase ,and Span 80 and Tween 60 〔m(Span 60 )1m(Tween 60 )= 312 〕as
compiex surfactant ,starch microspheres were synthesized by inverse emuision poiymerization with N ,
N -methyienebisacryiamide as precrossiinker and epichiorohydrin as crossiinking agent. The product
was characterized by FTIR ,SEM and granuiarity anaiyzer. The resuits show that the average particie
size of the starch microspheres is about 14. 7 !m and 83% of the microspheres is distributed in the
range 6 ~ 30 !m. The microspheres are round ,smooth and densified ,which can be used as a kind of
g
显示全部