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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2005.6
- 수록면
- 387 - 392 (6page)
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초록· 키워드
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For the production of further functional bio-degradable plastic(polybutylene succinate:PBS) with TiO₂ as photocatalyst, which shows the decomposition of detrimental organic compound and pollutant under ultraviolet irradiation, we attempted to prepare TiO₂ coatings on PBS substrate by HVOF and plasma spraying techniques under various conditions. The microstructures of coatings were characterized with SEM and XRD analysis, and the photocatalytic efficiency of coatings was evaluated through the photo degradation of gaseous acetaldehyde. The effects of primary particle size and spraying parameters on the formation behavior, photo catalytic performance and mechanical characteristics of the coatings have been investigated.
The results indicated that with respect to both the HVOF sprayed P₂?? and P₃? coatings, the high anatase ratio of 100% can be achieved regardless of fuel gas pressure. On the other hand, the HVOF sprayed P? coating exhibited largely decreased anatase ratio (from 100% to 49.1%) with increasing the fuel gas pressure, which may be attributed to the much higher susceptibility to heat of 7㎚ agglomerated powder. In terms of photocatalytic efficiency, HVOF sprayed P₂?? and P₃? coatings seem to predominate as compared to that of plasma sprayed P₂?? coatings owing to the higher anatase ratio. However, the HVOF sprayed P? coatings didn't show the photo catalytic activity, which may result from the extremely small reaction surface area to the photo-catalytic activity and low anatase ratio. Such functional PBS with new roles is expected to cosiderably contribute to the reduction of aggravated environmel problem.
The results indicated that with respect to both the HVOF sprayed P₂?? and P₃? coatings, the high anatase ratio of 100% can be achieved regardless of fuel gas pressure. On the other hand, the HVOF sprayed P? coating exhibited largely decreased anatase ratio (from 100% to 49.1%) with increasing the fuel gas pressure, which may be attributed to the much higher susceptibility to heat of 7㎚ agglomerated powder. In terms of photocatalytic efficiency, HVOF sprayed P₂?? and P₃? coatings seem to predominate as compared to that of plasma sprayed P₂?? coatings owing to the higher anatase ratio. However, the HVOF sprayed P? coatings didn't show the photo catalytic activity, which may result from the extremely small reaction surface area to the photo-catalytic activity and low anatase ratio. Such functional PBS with new roles is expected to cosiderably contribute to the reduction of aggravated environmel problem.
목차
Abstract
1. Introduction
2. Experimental Procedures
3. Results and Discussion
Conclusion
References
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UCI(KEPA) : I410-ECN-0101-2009-581-017266449