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研究生:潘惠婷
研究生(外文):Hui-ting Pan
論文名稱:PEO-b-PCL、PEO和PCL分別與PVPh混合之單分子膜探討
論文名稱(外文):Mixed monolayers of PEO-b-PCL、PEO、PCL with PVPh
指導教授:徐文平徐文平引用關係
指導教授(外文):Wen-Ping Hsu
口試委員:李仁盛黃淑玲
口試委員(外文):Ren-shen LeeShu-ling Huang
口試日期:2012-06-07
學位類別:碩士
校院名稱:國立聯合大學
系所名稱:化學工程學系碩士班
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:2012
畢業學年度:100
語文別:中文
論文頁數:113
中文關鍵詞:PEO-b-PCL;PEO;PCL;PVPh;單分子膜
外文關鍵詞:PEO-b-PCLPEOPCLPVPhmonolayers
相關次數:
  • 被引用被引用:2
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  • 下載下載:23
  • 收藏至我的研究室書目清單書目收藏:0
本研究利用PEO-b-PCL、PEO、PCL與PVPh來製作單分子膜。將溫度及濃度設為變數,觀察單分子膜在氣/液界面,表面壓力(π)隨著每分子佔據面積(A)的變化(π-A等溫線)以及鬆弛曲線的行為。將PVPh分別加入PEO-b-PCL、PEO及PCL形成混合單分子膜,再與純成份系統比較,藉由熱力學分析了解組成與溫度兩者對單分子膜穩定性的影響,進一步利用Vollhardt動力學方程式作模擬,來探討單分子膜的成核及成長機制。
等溫線及過剩面積分析中,PEO-b-PCL在低溫及常溫下,特性較類似PEO,高溫下則偏向PCL主導,而過剩面積的正負偏差值可知混合系統偏離理想狀態,為可混合性系統。由鬆弛曲線實驗得知,溫度的增加會造成單分子膜穩定性的下降。利用Vollhardt模擬方程式模擬出kx與x值,可得知xkx乘積值與單分子膜穩定性密切相關。由於部份混合系統中,單分子膜穩定性在時間接近零時或是面積鬆弛過程中急遽下降以及面積突然的提升,導致模擬情形不符合物理意義而無法進行討論,但大部份可使用Vollhardt 動力學方程式描述PEO-b-PCL、PEO、PCL與PVPh混合系統的成核及成長機制。

This study investigated the mixed monolayers containing polyethylene oxide-block-polycaprolactone(PEO-b-PCL)、polyethylene oxide(PEO)、polycaprolactone(PCL) and polyvinylphenol(PVPh). Use temperature and concentration as the variables to observe the behavior of the monolayers by measuring surface pressure-area per molecule(π-A) isotherm and relaxation curve. Add PVPh into PEO-b-PCL、PEO and PCL respectively,to form the mixed monolayers and compared with pure component monolayers. The relationship of temperature、composition and stability of these monolayers were analyzed by thermodynamics. Furthermore, nucleation and growth model for relaxation of monolayers were simulated the via Vollhardt kinetics equation.
The analysis of π-A isotherm and excess area showed that the character of PEO-b-PCL was similar to PEO at low temperature and normal temperature, but like PCL at higher temperature. Furthermore, we can know the system deviates from the deal condition. By relaxation curve, the increase of temperature will decreases the stability of the monolayers. We obtain the constant x and kx from the Vollhardt kinetics equation and the product of x and kx are closely related to the stability of the monolayers.

目錄
摘要 I
Abstract II
目錄 III
表目錄 VI
圖目錄 VIII
附錄圖目錄 XV
第一章 緒論 1
1.1 前言1
1.2 研究目的與動機 4
第二章 文獻資料 6
2.1 Langmuir單分子膜 6
2.2 Langmuir 單分子膜的等溫線行為 9
2.3 單分子膜相變化 12
2.4 單分子膜的鬆弛行為 14
2.5 熱力學理論分析 15
2.6 鬆弛曲線模擬的探討 16
第三章 實驗 18
3.1 實驗藥品及配製 18
3.2 實驗器材 22
3.3 實驗步驟 24
3.3.1 π-A等溫線測量 24
3.3.2 鬆弛曲線測量 25
第四章 結果與討論 26
Part 1. PEO、PCL、PEO-b-PCL、PVPh純成份系統 26
4.1 單分子膜π-A等溫線 26
4.2 單分子膜之鬆弛行為 35
4.3 鬆弛曲線之模擬 39
Part 2. PEO、PCL、PEO-b-PCL與PVPh混合單分子膜之系統 42
4.4 單分子膜π-A等溫線 42
4.4.1 PEO與PVPh混合系統 42
4.4.2 PCL與PVPh混合系統 45
4.4.3 PEO-b-PCL與PVPh混合系統 48
4.5 混合單分子膜過剩面積之探討 51
4.6 混合單分子膜之鬆弛行為 .62
4.7 鬆弛行為之模擬 70
4.8 lnkx對1/T及濃度 74
4.9 lnx對1/T及濃度 78
4-10 模擬常數kx及x對A∞/A0效應 81
第五章 結論 87
參考文獻 89
附錄 93




參考文獻

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