论文部分内容阅读
A new method to chemically modify the surface of nanosized-SiO2 was studied in this paper.Nanosized-SiO2 was grafted with hyperbranched poly(amin ester)through one-spot polycondensation between AB2 monomer and active hydroxyl on silica surface in present of catalyst.Compared with the results of FTIR and TEM,it is found hyperbranched poly(amin ester)is successfully grafted on the surface of nanosized-SiO2 and the surface properties have been changed with an expected way.The results indicate that nanosized-SiO2 grafted with hyperbranched poly(amin ester)has better dispersion in the ethanol or chloroform than that unmodified.
A new method to chemically modify the surface of nanosized-SiO2 was studied in this paper. Nanosized-SiO2 was grafted with hyperbranched poly (amin ester) through one-spot polycondensation between AB2 monomer and active hydroxyl on silica surface in present of catalyst. Compared with the results of FTIR and TEM, it is found that hyperbranched poly (amin ester) is successfully grafted on the surface of nanosized-SiO2 and the surface properties have been changed with an expected way.The results indicate that nanosized-SiO2 grafted with hyperbranched poly (amin ester) has better dispersion in the ethanol or chloroform than that unmodified.