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研究生:方銘宏
研究生(外文):Ming-Hong Fang
論文名稱:以油/水/油乳化系統製備有機/無機混成殼層微膠囊
論文名稱(外文):Preparation of Hybrid Microcapsules Encapsulating Phase-Change Materials Using O/W/O Multiple Emulsions
指導教授:楊毓民楊毓民引用關係
指導教授(外文):Yu-Min Yang
學位類別:碩士
校院名稱:國立成功大學
系所名稱:化學工程學系碩博士班
學門:工程學門
學類:化學工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:中文
論文頁數:95
中文關鍵詞:混成材料油/水/油乳化系統微膠囊
外文關鍵詞:hybrid materialsmicrocapsulesO/W/O multiple emulsions
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摘要
本文結合油/水乳液系統製備有機殼層微膠囊的方法以及水/油乳液系統製備無機殼層微膠囊的方法,以油/水/油乳化系統製備有機/無機混成殼層微膠囊包覆相變物質。內部油相為所包覆的相變物質(正十五碳烷),中間水相則是包含有形成殼層的尿素甲醛樹脂預聚物與TEOS所形成的無機前趨物以及水相界面活性劑Tween 20,外部油相則包含有正十碳醇與TEOS以及油相界面活性劑Span 80。文中並探討水相界面活性劑Tween 20與高分子預聚物的濃度對油/水/油乳化系統的穩定性以及製備的有機、無機與有機/無機混成殼層微膠囊粒徑、包覆量及產量的影響。油/水/油乳液穩定性方面利用光學顯微鏡觀察其分層的時間以進行討論,而所製備之微膠囊方面則是利用光學顯微鏡量測粒徑、FTIR進行成份分析以及DSC量測包覆量進行討論。另外利用利用SEM照片與有機/無機比例進行混成殼層的形式與狀態方面的探討。
藉由改變水相界面活性劑與有機預聚物的濃度,可以成功的製備出有機/無機混成殼層微膠囊包覆相變物質,微膠囊的粒徑由400μm至1000μm不等,包覆量則是由40%~80%,產量則是由8克~11克不等。所製得微膠囊經由傅立葉轉換紅外線光譜儀(FTIR) 進行結構鑑定,並以DSC熱物理性的觀測,驗證油/水/油乳化系統能完整包覆相變物質,且其殼層為有機/無機混成結構。而有機/無機混成殼層微膠囊的殼層狀態分為兩種,一種為無機殼層在內層包覆相變物質,有機殼層覆蓋在外層形成。第二種為有機殼層先行形成,而無機殼層在有機結構空隙中形成。
ABSTRACT
Preparation microcapsules of organic shell in O/W emulsion and inorganic shell in W/O emulsion, we use the O/W/O multiple emulsions to prepare microcapsules of hybrid shell which encapsulate phase-change material. In O/W/O emulsions, the phase-change material(pentadecane) was emulsified as an internal oil phase in a aqueous solution of organic prepolymer, inorganic precursor and Tween 20 prior to emulsification into an external oil phase. In this study, we discuss not only the concentration of Tween 20 and organic prepolymer about stability of O/W/O emulsions but also preparation of organic, inorganic and hybrid microcapsules of particle size, yield and encapsulation. Stability of O/W/O emulsion and particle size observe by microscope. FTIR analyzes microcapsules and DSC measures encapsulation of microcapsules. We observe pictures of SEM to discuss the types and situation of hybrid shell.
To change the concentration of Tween 20 and organic prepolymer, we can successful to prepare microcapsules of hybrid shell which encapsulate phase-change materials. Particle size is from 400μm to 1000μm. Encapsulation is from 40% to 80% and yield is from 8g to 11g. The microcapsules that we prepared measure by FTIR and DSC to prove O/W/O emulsions which can encapsulate phase-change materials and the shell forms by hybrid. There are two types of hybrid shell. One is inner shell formed by inorganic and outer shell formed by organic. The others is to form organic shell first and inorganic shell forms in organic gaps.
總目錄
中文摘要 Ⅰ
ABSTRACT Ⅱ
總目錄 Ⅲ
表目錄 Ⅵ
圖目錄 Ⅶ

第一章 緒論 1
§1-1 相變現象與相變物質 1
§1-2微粒包覆技術 2
§1-3相變物質微膠囊 3
§1-4 有機/無機混成殼層微膠囊 3
§1-5 研究動機及論文架構 4

第二章 文獻回顧 8
§2-1 有機殼層微膠囊之製備-油/水乳化系統 8
§2-2無機殼層微膠囊之製備-水/油乳化系統 9
§2-3有機/無機混成殼層微膠囊之製備-油/水/油乳化系統 10

第三章 實驗 20
§3-1油/水/油乳化系統 20
§3-2 以油/水/油乳化系統製備微膠囊 21
§3-2-1有機殼層微膠囊之製備 21
§3-2-1-1 材料 21
§3-2-1-2 實驗步驟 22
§3-2-2無機殼層微膠囊之製備 22
§3-2-2-1 材料 22
§3-2-2-2 實驗步驟 23
§3-2-3有機/無機混成殼層微膠囊之製備 23
§3-2-3-1 材料 23
§3-2-3-2 實驗步驟 24
§3-3 微膠囊之測試與分析 24
§3-3-1 顯微觀測 24
§3-3-2 化學結構鑑定 25
§3-3-3 粒徑分析 25
§3-3-4 熱分析 26

第四章 結果討論 32
§4-1 油/水/油乳化系統穩定性之探討 32
§4-1-1 水相界面活性劑的影響 33
§4-1-2 預聚物濃度的影響 33
§4-1-3 水相界面活性劑與預聚物的影響 34
§4-2 油/水/油乳化系統製備有機殼層微膠囊 35
§4-2-1 水相界面活性劑濃度對粒徑、包覆量與產量的影響 35
§4-2-2 預聚物的濃度對粒徑、包覆量與產量的影響 36
§4-3 油/水/油乳化系統製備無機殼層微膠囊 37
§4-4 油/水/油乳化系統製備有機/無機混成殼層微膠囊 38
§4-4-1水相界面活性劑濃度對粒徑、包覆量與產量的影響 38
§4-4-2預聚物的濃度對粒徑、包覆量與產量的影響 39
§4-4-3混成殼層狀態的討論 41

第五章 結論及建議 78
§5-1 結論 78
§5-2 建議 80
參考文獻 81
附錄 86
A. 有機殼層微膠囊之製備-界面縮合聚合法 86
B. 無機殼層微膠囊之製備-溶凝膠法 92
自述 95
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