A study of poly lactic acid/metal oxide nanocomposites

• Main Authors: Chieh-En Lin, 林傑恩
• Other Authors: Wei-Ming Chiu
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/35406470488905705308

碩士 === 國立勤益科技大學 === 化工與材料工程系 === 97 === In this studies are divided into PLA/SiO2、PLA/Al2O3、 PLA/SiO2/Al2O3, respectively. Study on the properties from different contents of metal alkoxide. Organic/inorganic Poly(lactic acid)(PLA) metal alkoxide hybrid films are prepared using the sol-gel method. These hybrid films are subjected to thermal stability, mechanical properties, optical properties, surface morphology and structures properties analyses. Also, dynamic mechanical analysis (DMA) and thermo-mechanical analysis (TMA) are used to assess the material dimensional stability and haze meter and ultraviolet and visible spectroscopy (UV-Vis) for optical properties and thermo gravimetric analyzer are used to material degradation temperature and Scanning Electron Microscope (SEM) are used to surface morphology stability and X-ray photoelectron spectrometer (XPS) are used to surface composition and element contents. The results show that the mechanical and thermal properties of PLA can be enhanced effectively using the sol-gel method; in particular, the enhancement of mechanical properties is the most conspicuous. The rigidity is significantly enhanced and the coefficient of thermal expansion is also significantly reduced.