臺灣博碩士論文加值系統

摘要
分別純化月桂酸、肉豆蔻醚酸、棕櫚酸並各以碳酸氫鈉、精胺酸中和成脂肪酸鈉鹽與脂肪酸-精胺酸鹽之後，於不同溫度下測定其表面活性，所測定表面性質，包含krafft point、臨界微胞濃度(cmc)、表面超額濃度(Γmax)、降低表面張力之效率(pCΠ=20)、降低表面張力之效能(Πcmc)，以及每個界面活性劑分子吸附於表面時所佔的平均面積(Amin)，進而由表面性質求得熱力學性質，結果發現兩者之表面性質差異不大，但脂肪酸-精胺酸鹽之溶解度較脂肪酸鈉鹽增加不少。
另外選取工業常用的界面活性劑，測定其表面活性與濕潤性（Wetting）、起泡性(Foaming)、硬水皂分散性﹙Lime soap dispersion﹚等性質，發現工業用之界面活性劑的表面活性質較純的界面活性劑有更佳之表面性質。

Abstract
Lauric acid, myristic acid, palmitic acid were purified, then neutralized to arginine soap by arginine. At different temperature, we measure their surface properties, including of krafft point, critical micelle concentration (cmc), surface excess concentration (Γmax), surface efficiency (pCΠ=20), surface effectiveness (Πcmc), and average area per molecule at surface (Amin). The thermodynamic properties of arginine soaps could be calculated from surface tension properties, and little difference was found from sodium soap. The solubility of arginine soaps was more solube then sodium soaps. Besides, we chose some commercial surfactants and measureing the surface activity, wetting, foaming, and lime soap dispersion properties. In this study, the surface activity of commercial surfactants were better than pure surfactant.

總目錄
目錄.....................................................................................Ⅰ
中文摘要............................................................................Ⅲ
英文摘要............................................................................Ⅳ
圖索引.................................................................................Ⅴ
表索引.................................................................................Ⅹ
一、緒論
1-1 研究目的......................................................................1
1-2 歷年來脂肪酸鹽界面活性劑之研究發展概論.....2
1-3 精胺酸之物理性質.....................................................4
1-4 界面活性劑之簡介.....................................................5
1-5 界面活性劑的界面性質............................................11
1-6 界面活性劑的熱力學性質........................................16
1-7 濕潤...............................................................................20
1-8 起泡...............................................................................22
1-9 濁度...............................................................................24
二、實驗
2-1 儀器...............................................................................28
2-2 藥品...............................................................................29
2-3 脂肪酸的純化..............................................................30
2-4 Krafft point 的測定........................................................31
2-5 表面張力的測定 .........................................................32
2-6 起泡性試驗（Rose-mile Test）..................................34
2-7 溼潤作用（Ｄraves Wetting Test）.............................36
2-8 Lime soap dispersion Test...............................................38
三、結果與討論
3-1 結果.................................................................................40
3-2 界面性質的比較和探討..............................................81
四、結論...............................................................................86
五、參考資料......................................................................87

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