- 作者: 吳貞欽; 林義宗
- 作者服務機構: Applied Chemical Laboratory, Chinese Culture University, Taiwan, R.O.C.
- 中文摘要: The release of urea from ethylcellulose coated microcapsules was efficiently reduced by post-treatment with toluene-2,4-diisocyanate (TDI) in n-hexane. Our results show that TDI can be used as a sealant which modifies the shell characteristics of the ethylcellulose film. The modification is rather complicated in that it probably includes cross-linking between ethylcellulose and TDI, a reaction between urea and TDI, and biuret or polyurea formation from TDI absorbed on the microcapsules surface with moisture. The influence of post-treated conditions on the release of urea from ethylcellulose shell was studied.
- 英文摘要: --
- 中文關鍵字: Microencapsulation; ethyl cellulose shell; TDI modification; slow release.
- 英文關鍵字: Microencapsulation; ethyl cellulose shell; TDI modification; slow release.