Synthesis and Characterizations of Spherical Al2O3 Particle/Polymer Composite Materials

• Main Authors: Ping -Hsueh Liu, 劉秉學
• Other Authors: 曾俊元
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/9x4u64

碩士 === 國立臺北科技大學 === 材料及資源工程系研究所 === 98 === This study is based on the technology of Al2O3 powders coated with PMMA polymer to form ceramic-polymer composite. Al2O3 powders and MMA cannot form a chemical bonding, therefore, γ-MPS was used as coupling agent to form and strengthen a chemical bond between PMMA polymer(organic) and Al2O3 powders(inorganic). Organic-inorganic material is prepared in alkaline condition. First, Al2O3 powders and γ-MPS proceeded condensation reaction in the ethanol to form a chemical bonding. Then free radical initiator and MMA were added into above material in sequence, so that the surface of Al2O3 powders was able to be successfully coated with uniform PMMA. A uniform film was observed under the Transmission Electron Microscopy(TEM) to show that Al2O3 powders can be coated with a thin polymer film. By the analysis of the FTIR, the C=O peak showed that the surface of coated Al2O3 had a chemical shift. Its surface potential was different from the uncoated one under the measurement of Zeta Potential meter. The test specimens formed by the polymer coated Al2O3 powders had higher strength after being tested by three-point bending test. Based on the experimental results through a series of analyses, they show that the composite particles (coated Al2O3) would be a good material for future denture application.