博碩士論文 963204048 詳細資訊




以作者查詢圖書館館藏 以作者查詢臺灣博碩士 以作者查詢全國書目 勘誤回報 、線上人數:10 、訪客IP:34.204.168.209
姓名 林佳吟(Jia-yin Lin)  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 以脂肪酸鈉鹽界劑製備水凝膠之行為研究探討
(Thermoreversible hydrogel formed by alkyl carboxylatesalt in aqueous solution)
相關論文
★ 反離子的凝聚作用和釋放於界劑溶液中添加鹽類的影響之研究★ 以離子型界劑溶解微脂粒之研究
★ 奈米添加物對微乳液滴靜電特性的影響–蒙地卡羅模擬法★ W/O型微乳液液滴之電荷分佈量測
★ 溫度和PEG-脂質對磷脂醯膽鹼與離子型界面活性劑間作用的影響之研究★ 明膠的溶膠-凝膠相變化與微乳液-有機凝膠相變化
★ 膽固醇與膽鹽對微脂粒穩定度的影響★ 電解質溶液的表面張力-蒙地卡羅模擬法
★ 稀薄聚電解質溶液中的反離子凝聚現象★ 溫度不敏感性之電動力學行為於毛細管區域電泳
★ 以熱力學性質定義帶電粒子的電荷重正化現象★ 聚乙二醇與界面活性劑的作用
★ 聚電解質溶液中的反離子凝聚現象★ 聚電解質在中性高分子溶液中的泳動行為
★ 在聚電解質溶液中的有效電荷★ 以分散粒子動力學法模擬雙性團聯共聚物微胞之探討
檔案 [Endnote RIS 格式]    [Bibtex 格式]    [相關文章]   [文章引用]   [完整記錄]   [館藏目錄]   [檢視]  [下載]
  1. 本電子論文使用權限為同意立即開放。
  2. 已達開放權限電子全文僅授權使用者為學術研究之目的,進行個人非營利性質之檢索、閱讀、列印。
  3. 請遵守中華民國著作權法之相關規定,切勿任意重製、散佈、改作、轉貼、播送,以免觸法。

摘要(中) 由於生醫材料以及組織工程在近期的快速發展,對於增加產品的生物降解性、生物相容性或是毒性等方面上,總是錙銖必較。不同以往高分子型凝膠對於環境的危害,利用界面活性劑獨特自我組裝的性質而形成的凝膠則是在近年來被廣泛的探討,原因在於利用非共價力而聚集的界劑分子相較於高分子在人體中更容易被自然排出,所以在許多材料的選擇往往被列為最優先的考慮,例如:創傷敷料。目前對於界劑型凝膠的研究多為陽離子型界劑系統為主,例如十六烷基三甲基銨溴化物。一般相信陽離子型界劑在加入芳香族鹽類後易形成如蟲狀般的微胞且彼此糾結、纏繞,而形成短暫的網狀結構,因此使系統顯現出具有黏彈的行為。
然而對於鮮少被討論的陰離子系統,則為本論文研究的目標,本文以傳統中製成肥皂的原料─脂肪酸鈉鹽界劑為對象,發現在低溫下於水相系統中能形成乳白色不透光的固體物,經由流變性質的量測證實了此物質確實為凝膠,並觀察出此凝膠為熱可逆型,透過差式掃描熱卡計等實驗法來定義出其溶膠─凝膠相轉變溫度。並更進一步地,探討在不同烷鏈長度或是不同濃度的脂肪酸型界劑,與其相轉變溫度之間的差異,並以傳統公認為熱可逆型凝膠的明膠作為各性物性的比較對象。藉由添加鹽類離子以及改變溶液的酸鹼值來比較對於界劑凝膠形成的影響程度,發現系統中存在的反離子種類會決定所形成凝膠的強度,鈉離子扮演著提升凝膠強度的角色,而其他等價離子(如鉀、鋰離子…等)則是扮演著降低強度的角色。最後透過電子顯微鏡來分析此界劑凝膠的表面微結構。
摘要(英) A physical gel is a substantially dilute network in which junctions can break and recombine due to thermal fluctuation, i.e., the junctions have the finite lifetime. When in the steady-state, it exhibits no flow. In general, reversible gels are formed by polymers, with weak attractions like hydrogen bonds, for example, biopolymers gelatin and agar.
Typically, the surfactant gel is referred to the cationic surfactant/water system involving cetyl-trimethylammonium bromide (CTAB). However, it is generally believed that CTAB surfactant molecules assemble into worm-like micelles in aqueous media and yield a transient network structure due to the topological entanglement of the micelles. As a result, it is more like a viscoelastic solution rather than a jelly-like gel.
In this work, the gelation of a surfactant solution involving anionic surfactant/water system including sodium laurate (NaL) and sodium tetradecanoate (NaM) is explored by rheological properties measurement and differential scanning calorimetry. The surfactant solution transforms from a transparent liquid to a white opaque gel upon lowering the temperature and vice versa. The characteristics of the surfactant gel is confirmed by the fact that the storage module G”is greater than the loss module G”. In addition to investigate the gelling mechanism such as the nature of associative bonds and microscopic structure, the effects of surfactant concentration, alkyl chain length, and salt addition on the gel properties are studied as well.
關鍵字(中) ★ 陰離子型界面活性劑
★ 流變學
★ 凝膠
★ Krafft 溫度
關鍵字(英) ★ Rheology
★ Anionic surfactant
★ Krafft temperature
★ Hydrogel
論文目次 摘要......................................................i
Abstract.................................................ii
致謝....................................................iii
目錄.....................................................iv
圖目錄...................................................vi
表目錄.................................................viii
符號說明.................................................ix
第一章 緒論.............................................1
1-1 前言.............................................1
1-2 研究動機.........................................2
第二章 文獻回顧與原理...................................3
2-1 理論背景.........................................3
2-1-1 界面活性劑.......................................3
2-1-2 臨界微胞濃度的測量...............................8
2-1-3 流變學(Rheology)................................10
2-2 相關文獻回顧....................................14
2-2-1 凝膠............................................14
2-2-2 熱可逆性型凝膠..................................15
2-2-3 界面活性劑型凝膠................................16
第三章 樣品製備與實驗方法..............................20
3-1 實驗藥品........................................20
3-2 樣品製備........................................21
3-3 實驗儀器........................................23
3-3-1 流變儀..........................................24
3-3-2 差式掃瞄熱量計..................................25
3-3-3 電導度計........................................26
3-3-4 離子選擇電極(Ion selective electrode)...........26
3-3-5 落球實驗法(Falling ball)........................27
第四章 結果與討論......................................28
4-1 界劑凝膠的形成..................................28
4-1-1 脂肪酸界劑的烷基鏈長與濃度影響..................28
4-1-2 Krafft point與臨界微胞濃度......................28
4-2 凝膠性質分析....................................34
4-2-1 溫度效應........................................34
4-2-2 流變性質........................................35
4-2-3 表面微結構......................................35
4-3 添加物的影響....................................48
4-3-1 反離子效應......................................48
4-3-2 溶液的酸鹼值....................................49
五、 結論............................................53
參考文獻.................................................54
參考文獻 [1] L. A. Estroff and A. D. Hamilton, Water gelation by organic molecules, Chemical Review, Vol. 104, No. 3, 2003.
[2] J. Liang et al., Solvent-induced crystal morphology transformation in a ternary soap system: sodium stearate crystalline fibers and platelets. Langmuir, Vol. 17, No. 21, 2001.
[3] R. D. Vold et al., A phase rule study of the system sodium myristate-water, J. Am. Chem. Soc., Vol. 63, No. 5, 1941.
[4] C. Madelmont and R. Perron, Study of the influence of the chain length on aome aspects of soap/ water diagrams, Colloid & polymer Sci. Vol. 254, No. 6, 1976.
[5] 刈米孝夫著,界面活性劑的原理與應用,王鳳英編譯,四版,高立圖書,台北縣,1992。
[6] K. Shinoda et al., Colloid surfactants: some physicochemical properties, Academic Press, New York, 1963.
[7] 洪庭旭,「界面活性劑溶劑潤濕疏水表面之行為」,國立中央大學,化學工程與材料工程所,碩士論文,民國96年。
[8] D. J. Shaw,膠體與界面化學入門,張有義、郭蘭生編譯,四版,高立圖書,台北縣,1993。
[9] 王儷穎,「在聚電解質溶液中的有效電荷」,國立中央大學,化學工程與材料工程所,碩士論文,民國95年。
[10] P. Terech and R. G. Weiss, Low molecular mass gelators of organic liquids and the properties of their gels, Chemical Review, No. 97, Vol. 8, 1997.
[11] U. Eisele, Introduction to polymer physics, Springer Verlag, 1990.
[12] S. Ikeda and Katsuyoshi Nishinar, “Weak gel”-type rheological properties of aqueous dispersions of nonaggregated κ–Carrageenan helices, J. Agric. Food Chem., Vol. 49, No9, 2001.
[13] P. Papon et al. The physics of phase transitions: concepts and applications. 2/e, Springer, New York, 2002.
[14] S. M. Tosh and A. G. Marangoni, Determination of the maximum gelation temperature in gelatin gels. Applied Physics Letters, Vol. 84, No. 21, 2004.
[15] G. C. Kalur and S. R. Raghavan, Anionic wormlike micellar fluids that display cloud point: rheology and phase behavior. J. Phys. Chem. B, Vol. 109, No. 18, 2005.
[16] Drew Myers, Surfaces, Interfaces, and Colloids: Principles and applications, 2/e, John Wiley & Sons, Inc, New York, 1999.
[17] K. Trickett and J. Eastoe, Surfactant-based gels. Advances in colloid & interface Sci. Vol. 144, 2008.
[18] Z. Lin et al., spherical-to-wormlike micelle transition in CTAB solution. J. Phys. Chem., Vol. 98, No. 23, 1994.
[19] S. D. Tanner et al., self-assembly of surfactant vesicles that transform into viscoelastic wormlike micelles upon heating. J. Am. Chem. Soc., Vol. 128, No. 20, 2006.
[20] R. Kurmar et al., wormlike micelles of a C22-tailed zwitterionic betaine surfactant: from viscoelastic solutions to elastic gels, Langmuir, Vol.23, No. 26, 2007.
[21] 司寇克 (D. A. Skoog)著,儀器分析,林敬二譯,五版,美亞書版股份有限公司,台北市,1997。
[22] C. Vautier-Giongo and Barney L. Bales, Estimate of the ionization degree of ionic micelles based on Krafft temperature measurements, J. Phys. Chem. B, Vol. 107, No. 23, 2003.
[23] A. N. Campbell and G. R. Lakshminarayanan, Conductances and surface tensions of aqueous solutions of sodium decanoate, sodium laurate, and sodium myristate, at 25℃ and 35℃. Canadian J. Chem., Vol. 43, 1965.
[24] 蕭晉傑,「反離子的凝聚作用和釋放於界劑溶液中添加鹽類的影響之研究」,國立中央大學,化學工程與材料工程所,碩士論文,民國93年。
[25] O. Träger et al., Fluid and chiral ephedrinium mysistate micellar fibers, J. Am. Chem. Soc., Vol. 119, No. 39, 1997.
指導教授 曹恒光(Heng-kwong Tsao) 審核日期 2009-6-15
推文 facebook   plurk   twitter   funp   google   live   udn   HD   myshare   reddit   netvibes   friend   youpush   delicious   baidu   
網路書籤 Google bookmarks   del.icio.us   hemidemi   myshare   

若有論文相關問題,請聯絡國立中央大學圖書館推廣服務組 TEL:(03)422-7151轉57407,或E-mail聯絡  - 隱私權政策聲明