| Summary: | 碩士 === 淡江大學 === 機械與機電工程學系碩士班 === 94 === This research was proposed to study on the crystallization substrates which have been mass transport of methanol mixed with ferric chloride hexahydrate (FeCl3•6H2O) in poly(methyl methacrylate) (PMMA) and react with ammonium carbonate to produce iron carbonate crystallization. This research will be divided into four portions to study on the mass transport of cosolvent in poly(methyl methacrylate)、the crystallization condition of the substrates vs. the properties of the crystallization specimen and the character after baking. The experimental results indicate that the mass transport of this two cosolvent in poly(methyl methacrylate) (PMMA) is an endothermic process. The two saline have different influence on the diffusion coefficient for CaseⅠ, the diffusion velocity for CaseⅡ, the activation energy of diffusion coefficient in CaseⅠtransport and the activation energy of diffusion velocity for CaseⅡ.The FTIR spectrum of the specimen with the iron carbonate crystallization shows the new absorption peak at 1240cm-1and 1380 cm-1. In addition, the glass transition temperature (Tg) of the specimen with iron carbonate crystallization will rise as the increase of mass transport temperature and concentration. After backing, as the quality spreads temperature and when the consistency is higher, brittleness of PMMA material is increasing.
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