Surface‐modified silica nanoparticles for reinforcement of PMMA

• DOI: 10.1002/app.26164
• Publication Date: 2007-04-26T18:23:14Z
• Authors: R. Y. Hong; H. P. Fu; Y. J. Zhang; L. Liu; J. Wang; H. Z. Li; Y. Zheng
• Keywords: Thermogravimetric analysis; Surface Modification; In situ polymerization

Abstract Polymethyl methacrylate (PMMA) was introduced onto the surface of silica nanoparticles by particle pretreatment using silane coupling agent (γ‐methacryloxypropyl trimethoxy silane, KH570) followed solution polymerization. The modified were characterized Fourier‐transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM) and thermogravimetric analysis (TGA). Sedimentation tests lipophilic degree (LD) measurements also performed to observe compatibility between organic solvents. Thereafter, PMMA slices reinforced silica‐nanoparticle prepared in situ bulk polymerization accompanied with an initiator. resultant polymers UV–vis, Sclerometer, differential scanning calorimetry (DSC). mechanical properties hybrid materials measured. results showed that glass transition temperature, hardness, flexural strength as well impact improved. Moreover, tensile films doped via blending enhanced. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci