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纳米SiO2表面超支化聚合物接枝改性的新方法
引用本文:赵辉,罗运军,李杰,谭惠民.纳米SiO2表面超支化聚合物接枝改性的新方法[J].高分子材料科学与工程,2005,21(3):188-191.
作者姓名:赵辉  罗运军  李杰  谭惠民
作者单位:北京理工大学材料科学与工程学院,北京,100081
摘    要:提出了一种对纳米SiO2表面进行化学改性的新方法。即在催化荆的存在下,以纳米SiO2为反应中心核,纳米SiO2表面上的活性羟基与AB2型单体发生一步缩聚反应,在纳米SiO2表面接枝超支化聚合物。FT-IR和TEM的表征证明纳米SiO2表面接枝上了超支化聚合物。研究表明,得到的超支化聚合物接枝改性纳米SiO2的表面性质有较大的改变,在乙醇、氯仿等溶剂中有很好的分散性和稳定性。

关 键 词:超支化聚胺酯  纳米SiO2  表面改性  分散稳定性
文章编号:1000-7555(2005)03-0188-04
修稿时间:2004年10月10

STUDY OF NANOSIZED SILICA GRAFTIED WITH HYPERBRANCHED POLY(AMINE-ESTER)
ZHAO Hui,LUO Yun-jun,LI Jie,TAN Hui-Min.STUDY OF NANOSIZED SILICA GRAFTIED WITH HYPERBRANCHED POLY(AMINE-ESTER)[J].Polymer Materials Science & Engineering,2005,21(3):188-191.
Authors:ZHAO Hui  LUO Yun-jun  LI Jie  TAN Hui-Min
Abstract:A new method to chemical modified the surface of nanosized-SiO_2 was studied in this paper. Nanosized-SiO_2 was grafted with hyperbranched poly(amin ester) through one-spot polycondensation between AB_2 monomer and active hydroxyl on silica surface in present of catalyst. Compared with the results of FT-IR and TEM, it is found hyperbranched poly(amin ester) is successfully grafted on the surface of nanosized-SiO_2 and the surface properties have been changed with an expected way. The results indicate that nanosized-SiO_2 grafted with hyperbranched poly(amin ester) has better dispersion in the ethanol or chloroform than that unmodified.
Keywords:hyperbranched poly(amin-ester)  nanosized-SiO_2  surface modification  dispersion stability
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