Preparation of Polymer Microspheres Using Silane Coupling Agent Modified Nano-SiO2 as Single Stabilizer

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This paper demonstrates that silica nanoparticles were modified by the four silane coupling agents (KH-151, KH-550, KH-560, KH-570) firstly, then polystyrene/silica (PS/SiO2) composite microsphere with PS core and silica nanoparticles shell were prepared by Pickering emulsion polymerization. The characterization of optical microscope (OM), scanning electron microscope (SEM), and thermogravimetic analysis ( TGA) illustrates that these microsphere are composed of PS and silica nanoparticles. Silica nanoparticles modified by the different silane coupling agents could form the stable PS/SiO2 microsphere over 70 °C, while the unmodified silica nanoparticles are difficult to form stable PS/SiO2 microspheres at the same temperature. The PS/KH-151-SiO2 microsphere exhibits the least average particle size, while the PS/KH-570-SiO2 microsphere produces the largest. Both SEM and TGA confirm that microsphere surface exists solid nanoparticles.

Info:

Periodical:

Advanced Materials Research (Volumes 341-342)

Edited by:

Liu Guiping

Pages:

247-251

Citation:

G. H. Ma et al., "Preparation of Polymer Microspheres Using Silane Coupling Agent Modified Nano-SiO2 as Single Stabilizer", Advanced Materials Research, Vols. 341-342, pp. 247-251, 2012

Online since:

September 2011

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$38.00

[1] K. Zhang, W. Wu, H. Meng, K. Guo, J. -F. Chen: Powder Technology, Vol. 190 (2009), p.393.

[2] D.Z. Yin, Q.Y. Zhang, H. P Zhang, C.J. Yin: J. Polym. Res. Vol. 17 (2010), p.689.

[3] J.H. Chen, C.Y. Cheng, W.Y. Chiu, C.F. Lee, N.Y. Liang: Euro. Polym. J. Vol. 44 (2008), p.3271.

[4] W.B. Chen, X.Y. Liu, Y.S. Liu and H.I. Kim: Colloid Polym. Sci. Vol. 288 (2010), p.1393.

[5] C.Y. Wang, C.J. Zhang, Y. Li, Y.H. Chen, Z. Tong: React. Funct. Polym. Vol. 69(2009), p.750.

[6] Y.F. Yang, L. Liu, J. Zhang, C.X. Li, H.Y. Zhao: J. Polym. Sci.: Part A Vol. 46(2008), p.2632.

[7] P.J. Colver, C. A. L. Colard and S. A. F. Bon: J. Am. Chem. Soc. Vol. 130(2008), p.16850.

[8] Y. Li, C.Y. Wang, Y.H. Chen, Z. Tong: J. funct. Polym. Vol. 22(2009), p.154.