含界面活性劑液滴在SBSi表面上的特殊行為

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姓名

王姿妤(Tzu-Yu Wang) 查詢紙本館藏

畢業系所

化學工程與材料工程學系

論文名稱

含界面活性劑液滴在SBSi表面上的特殊行為
(Exotic wetting behavior of surfactant drops on SBSi)

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摘要(中)

本實驗將(N,N-Dimethylaminopropyl)trimethoxysilane和1,3-Propanesultone反應製備出雙離子型磺基甜菜鹼矽烷(Sulfobetaine silane，SBSi)，經水解縮合後將SBSi修飾在玻璃基材上，根據先前的實驗[1]，純溶液(除了二碘甲烷)皆會在此表面展現完全潤濕現象。根據文獻指出，雙離子型高分子水合能力很好，因此藉由改變環境溼度探討雙離子表面水分子數量是否受影響，並使用內聚力強且在SBSi表面上展現部分潤濕行為的二碘甲烷，將液體滴在不同環境濕度下的SBSi表面，利用影像式接觸角量測儀可以很明顯地觀察到接觸角的改變。SBSi表面的水分子含量不同也會影響自釘扎(self-pinning)液體的擴張面積。也探討了純溶液(水、正十六烷)在不同環境濕度下的擴張行為，在高濕度的環境下，液體在初始面積與初始擴張速度皆會較大，藉此得知表面水分子量越多，液體越容易向外擴張。
另外，先前的文獻只探討了添加低(非)揮發性溶質水溶液在SBSi基材上的行為[1]，但並未討論過含界面活性劑液滴在基材上的行為，因此此篇論文會探討不同帶電性的界面活性劑液滴在SBSi表面上的行為。陽離子型界面活性劑會在表面產生去潤濕現象(Dewetting)；陰離子型和非離子型界面活性劑皆會產生fingering現象。而以上的現象只在含有水分子的SBSi上才會展現，且亦會隨著水分子數量的不同，而展現不同程度的fingering現象，然而在無水分子層的SBSi表面上則只會展現完全潤濕行為。

摘要(英)

The total wetting surface which is a kind of zwitterionic surface is fabricated by grafting the sulfobetain silane (SBSi) on glass slices. It is considered that there is a water film on the surface because of highly hydrate chemical groups. It can be observed different contact angle with dropping diiodomethane on SBSi which is in different relative humidity (RH). With increasing the relative humidity, the contact angle is larger in the reason that diiodomethane is insoluble in water. The other indirect evident is that the maximum wetting area of water drops on SBSi surface grows because more equilibrium water molecules bring benefits to the spreading of liquid. In the same ambient, it is observed the enormously different behavior between wet and dry surface no matter which electric charge surfactant droplets drop on the SBSi surface. When the liquid droplets drop on the SBSi surface containing a water film in the atmosphere, the droplets show the different behaviors depending on the electric charge of surfactant. Experiments show that droplets of cationic surfactant on SBSi surface present the phenomena of dewetting, because surfactant ions would be adsorbed on the SBSi surface. However, the droplets tend to stick on the dry surface and the contact angle of drops is about 40. For the case of anionic and nonionic surfactant, it shows the fingering pattern on the wet SBSi surface and the wetting behavior on the dry one.

關鍵字(中)

★ 磺基甜菜鹼
★ 界面活性劑

關鍵字(英)

★ sulfobetaine silane
★ surfactant

論文目次

中文摘要 i
Abstract ii
目錄 iii
圖目錄 vi
表目錄 xii
第一章緒論 1
1-1 前言 1
1-1-1 界面活性劑 [2, 3] 1
1-2 基本原理 8
1-2-1 部分潤濕現象 (Partial wetting phenomena) [10] 8
1-2-2 接觸角遲滯 14
1-2-3 去潤濕現象 (Dewetting) 20
1-2-4 完全潤濕現象 (Total wetting) 21
1-2-5 拉午耳定律 (Raoult’s Law) 26
1-2-6 咖啡圈環效應 [23, 24] 27
1-3 雙離子表面之文獻回顧 28
1-3-1 抗非特定吸附沾黏之簡介 [25, 26] 28
1-3-2 雙離子性材料 (Zwitterionic material) 30
第二章實驗步驟及方法 39
2-1 實驗藥品 39
2-2 實驗儀器及軟體 40
2-3 儀器原理 41
2-3-1 巨觀放大顯微量測系統 41
2-3-2 光學顯微鏡 41
2-3-3 影像式接觸角量測儀 42
2-3-4 電漿表面清潔機 (Basic Plasma Cleaner) 43
2-4 實驗步驟及方法 45
2-4-1 製備磺基甜菜鹼矽烷 (SBSi) [33] 45
2-4-2 製備超親水雙離子型基材 [33] 46
2-5 低接觸角分析分法 47
2-5-1 液滴面積的分析 47
2-5-2 以球帽公式(Spherical Cap)估計接觸角 48
第三章液滴在SBSi表面之潤濕行為：濕度效應 50
3-1 SBSi表面溼度控制 50
3-1-1 探討濕度效應對部分潤濕液體－二碘甲烷的影響 51
3-1-2 探討濕度效應對自釘扎液體－右旋糖酐(Dextran)的影響 52
3-2 正十六烷的自發性擴張 55
3-2-1 正十六烷在乾濕處理表面的擴張行為 56
3-2-2 環境濕度對正十六烷在基材上潤濕行為的影響 59
3-3 水的自發性擴張 60
3-3-1 水在乾濕處理表面的擴張行為 60
3-3-2 環境濕度對水在基材上潤濕行為的影響 62
第四章含陽離子型界劑液滴在SBSi基材上的行為 66
4-1 含低(非)揮發性溶質之液滴 66
4-2 SBSi表層水分子對含陽離子型界劑液滴的影響 66
4-2-1 乾SBSi表面 67
4-2-2 濕SBSi表面 68
4-3 含DTAB分子的SBSi表面 71
4-4 DTAB水溶液在SBSi表面上的遲滯行為 73
第五章含陰(非)離子型界劑液滴在SBSi基材上的行為 75
5-1 含陰離子型界劑液滴的fingering行為 75
5-1-1 濕SBSi表面 75
5-1-2 乾SBSi表面 77
5-1-3 濕度的影響 78
5-2 含非離子型界劑液滴在SBSi表面的行為 79
5-2-1 含brij 35液滴 79
5-2-2 環境溼度對fingering的影響 85
第六章結論 87
第七章參考文獻 89

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指導教授

曹恆光(Heng-Kwong Tsao)

審核日期

2017-6-13

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