Preparation and Characterization of Titania Containing Organic-Inorganic Hybrid Materials for UV-Shielding Application
碩士 === 淡江大學 === 化學工程與材料工程學系碩士班 === 95 === In this study, sol-gel method was employed to synthesis the titania containing organic-inorganic hybrid material for UV-shielding and the chelating agents were added to improve the defects of the UV-shielding film nowadays such as poor and limited range of U...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2007
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| Online Access: | http://ndltd.ncl.edu.tw/handle/36960645627652245242 |
| Summary: | 碩士 === 淡江大學 === 化學工程與材料工程學系碩士班 === 95 === In this study, sol-gel method was employed to synthesis the titania containing organic-inorganic hybrid material for UV-shielding and the chelating agents were added to improve the defects of the UV-shielding film nowadays such as poor and limited range of UV absorption. Because of the chelating agents being apt to be broken away from the titanium by the attack of the aqueous vapor, lead to the UV-shielding of the hybrid films decreased and produce the microphase separation. In this investigation, the methods which added a large amount of coupling agents and used the polymer with weatherability were used to improve the dispersion of the titania in the polymer matrix and the weatherability of the hybrid films.
FT-IR results show that organic-inorganic hybrid materials were prepared successfully. TGA results show that the thermal stability of the prepared hybrid films decreased with the increasing titania content. The results of SEM show that there is no microphase separation in the coupling agents containing organic-inorganic hybrid materials with 40wt% titania content. It’s due to chemical bonds are formed between polymer matrix and titania particles by adding a large amount of coupling agents. With the film thickness 5 μm and titania 40 wt%, ultraviolet can be cut off perfectly and the transmittance of the visible light is over 90 %. The experimental results show that the weatherability of the hybrid films increased by adding a large amount of coupling agents and using the polymer with weatherability.
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