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| 研究生： |
莊孟翰 Chuang, Meng-han |
|---|---|
| 論文名稱： |
聚乙烯乙醯胺與離子型界面活性劑之交互作用研究 Study of Interactions Between Poly(N-vinylacetamide) and Ionic Surfactants |
| 指導教授： |
侯聖澍
Hou, Sheng-shu |
| 學位類別： |
碩士 Master |
| 系所名稱： |
工學院 - 化學工程學系 Department of Chemical Engineering |
| 論文出版年： | 2008 |
| 畢業學年度： | 96 |
| 語文別： | 中文 |
| 論文頁數： | 104 |
| 中文關鍵詞： | 高分子與界面活劑之交互作用 、聚乙烯乙醯胺 、螢光光譜 、黏度 、核磁共振光譜 |
| 外文關鍵詞： | Poly(N-Vinylacetamide), Polymer-surfactant interaction, fluorescence spectroscopy, NMR, viscosity |
| 相關次數： | 點閱：73 下載：2 |
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本研究利用螢光光譜、黏度和核磁共振光譜，探討PNVA和不同類型的界面活性劑間之交互作用力。在PNVA-SDS溶液系統中，從螢光光譜和黏度實驗的結果，確認了CAC的濃度。當SDS濃度高於CAC時，此時螢光探針參數[I1/I3]py和[IE/IM]py會隨著SDS濃度的增加而下降，且從穩態螢光衰退實驗得到SDS的平均聚集數也會隨著SDS的濃度增加而增加，證實PNVA-SDS叢集的尺寸會隨著SDS的濃度增加而變大。而從黏度實驗的結果得到當SDS濃度到達CAC以上時，會由於PNVA-SDS所形成的叢集彼此間的靜電排斥力的關係，使得原本纏繞的PNVA高分子鏈被拉直，進而造成溶液黏度的上升。從NOE光譜得到在PNVA-SDS叢集中，PNVA高分子鏈穿過SDS的叢集，但是並不深入，並發現到PNVA-SDS叢集中SDS碳鏈呈現較為彎曲的結構。
在另一系統PNVA-CTAB溶液中，從螢光探針參數[I1/I3]py和[IE/IM]py的實驗結果得到PNVA與CTAB間並無作用力的存在，但在加入PNVA後會促使CTAB提前形成結構較為鬆散的微胞。
In this research, interactions between PNVA and different surfactants were studied by fluorescence spectroscopy and viscosity and NMR spectroscopy. In PNVA-SDS system, from the result of fluorescence spectroscopy and viscosity experiment, ensuring the SDS concentration of CAC. Above the SDS concentration of CAC, [I1/I3]py and [IE/IM]py decrease with SDS concentration increase. And from the result of steady state fluorescence quenchering experiment, the mean aggregation number increase with SDS concentration increase, indicating the size of PNVA-SDS aggregates increase with SDS concentration increase. From the result of viscosity experiment, when SDS concentration closes to CAC, because of the electrostatic repulsion between PNVA-SDS aggregates causes the coiled PNVA chain to expand. Thus the solution viscosity increase. The NOESY of PNVA-SDS system show that the penetration of PNVA chain into the SDS aggregate is not so deep and the curled alkyl chain of SDS is partially associated with the PNVA chain.
In PNVA-CTAB system, the result of [I1/I3]py and [IE/IM]py indicate the interaction between PNVA and CTAB is not existence. But PNVA causes CTAB to form loose micelles.
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校內：2011-07-23公開校外：2011-07-23公開