研究生: |
黃怡嘉 Yi-chia Huang |
---|---|
論文名稱: |
甲基丙烯酸十二酯與甲基丙烯酸十八酯混合型共同安定劑對迷你乳液的影響 The Effect of Mixed Costabilizers(LMA and SMA) on Miniemulsion stability |
指導教授: |
陳崇賢
Chorng-shyan Chern |
口試委員: |
林析右
Shi-yow Lin 許榮木 Jung-mu Shu |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 化學工程系 Department of Chemical Engineering |
論文出版年: | 2011 |
畢業學年度: | 99 |
語文別: | 中文 |
論文頁數: | 85 |
中文關鍵詞: | 迷你乳液 、奧士瓦老化速率 、混合型共同安定劑 |
外文關鍵詞: | Miniemulsion, Ostwald Ripening Rate, Mixed Costabilizers |
相關次數: | 點閱:252 下載:8 |
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本研究主要是探討LMA和SMA混合型共同安定劑之迷你乳液系統,於25℃下奧士瓦老化效應的影響。是利用MMA或STY作為單體,藉由改變共同安定劑總體機百分比(φc)探討其奧士瓦老化效應,並且比較在同φc下,改變共同安定劑LMA / SMA莫爾百分比,其K1、K2值。
因 1 / RO = φm / RO,m + φLMA / RO,LMA + φSMA / RO,SMA 無法有效描述三成分分散項的迷你乳液之奧士瓦老化效應,所以我們將此迷你乳液系統假設成“pseudo-two-component disperse phase miniemulsion”系統。實驗數據探討K1 / RO,m 與共同安定劑莫爾比(LMA/SMA)變化的關係,以及K1 / η與Ccmix圖的趨勢。最後比較K1、K2隨著共同安定劑LMA / SMA莫爾比改變造成的變化。
The effect of mixed costabilizers (LMA and SMA) on MMA and STY miniemulsion systems to retard the Ostwald ripening at 25OC was investigated. This study used either MMA or STY as the monomer and changed the volume fraction (φc) of the costabilizers to study the Ostwald ripening effect. The K1 and K2 values were compared when the LMA/SMA mole fraction was changed (The total volume fraction of mixed costabilizers is constant).
The modified Kabal’nov equation (1 / RO = φm / RO,m + φLMA / RO,LMA + φSMA / RO,SMA ) failed to describe the Ostwald ripening behavior of this three-component disperse phase miniemulsion. Thus, the miniemulsion disperse phase comprising monomer and the mixed costabilizers was simply treated as a “pseudo-two-component disperse phase miniemulsion system. The variation of K1 / RO,m - vs. - LMA/SMA and the trend of Ccmix with K1/η were discussed. Finally, the comparison of K1 and K2 value by the changing of costabilizer (LMA / SMA) molar ratio has been done in this research.
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