| Summary: | 碩士 === 中國文化大學 === 化學工程與材料工程學系奈米材料碩士班 === 102 === This paper aime to discuss the Polylactic acid (PLA) and nano Titanium composites formed by the processing process, physical properties, mechanical and thermal properties of.The research used 3-methacryloxy-propyl-trimethoxysilane (MPS) to modify surface of nano titanium. Prepared by mixing Polylactic acid (PLA)/nano titanium (include non-modify and modify) nano composites with different content when mixing weight percent of nano titanium by mixing.
After forming the different levels of weight percent of the Polylactic acid (PLA)/nano titanium morphology (FT-IR, Particle, XRD, FE-SEM, XPS), physical properties (Density, Contact Angle , Void content), mechanical properties (Hardness, Flexural test, Tensile test, Impact strength, Wearing), thermal properties (TGA, MI, HDT, Vicat, DSC) for Polylactic acid (PLA) properties and improve the degree of difference.
Experimental results show, by FT-IR and XPS, the crystal structure of Polylactic acid (PLA)/nano titanium nano composites was determined; in particle size analysis show nano titanium (include non-modify and modify) are both in nano specification; at XRD test only see PLA peaks in PLA; XPS test can see nano composites contains nano titanium; Good dispersion can be seen in SEM.
Adding nano titanium powder does effectively enhance in the physical properties test; In the mechanical properties test results showed that and flexural, hardness and wearing index decreased are effectively enhance, and impact decreased,tensile decrease. In the thermal properties, heat resistance to enhance effect even more pronounced with the increase of nano titanium added, the electromagnetic wave absorption and shielding effectively improved.
Keywords: PLA, nanocomposites, MPS, nano titanium
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