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研究生:王復民
研究生(外文):Wang Fu Ming
論文名稱:含長烷基側鏈之聚醯亞胺合成及其性質研究
論文名稱(外文):Synthesis and Charaterization of Polyimides with long alkyl side chain group
指導教授:陳燿騰
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:化學工程系
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:2004
畢業學年度:92
語文別:中文
論文頁數:106
中文關鍵詞:聚醯亞胺長烷基側鏈配向膜液晶
外文關鍵詞:polyimidelong alkyl side chain groupalignment layerliquid crytstal
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以2,2’-bis(2-hexloxyphenoxy)-5,5’-diaminobiphenyl, 2,2’-bis(3-octadecyloxyphenoxy)-5,5’-diaminobiphenyl, 和2,2’-bis(2-octadecyloxyphenoxy)-5,5’-diaminobiphenyl三種二胺單體和數種芳香族二酸酐經溶液縮合聚合成含長烷基側鏈的聚醯亞胺,並研究此系列聚醯亞胺的固有黏度、溶解度與熱性質,
首先,以2,2’-bis(3-octadecyloxyphenoxy)-5,5’-diaminobiphenyl所合成的聚醯胺酸的固有黏度範圍在0.15~0.21dL/g之間,經由DMA發現他們玻璃轉移溫度在141~180℃之間。此外,在氮氣和空氣下的10%重量損失分別是405~427℃與338~425℃之間。其中由含間位長烷基側基之二胺單體4c所合成的聚醯亞胺〈10系列〉的溶解度比含鄰位長烷基側基之二胺單體3c所合成的聚醯亞胺〈8系列〉的溶解度較差。
以2,2’-bis(2-hexloxyphenoxy)-5,5’-diaminobiphenyl二胺單體與數種芳香族二酸酐製備的聚醯亞胺具有中到高的固有黏度,黏度範圍在0.73~1.26 dL/g之間,此系列的聚醯亞胺具有好的溶解度,可溶於NMP、DMAc、THF與cyclohexanone等溶劑中,且皆可經由溶液塗佈成具有韌性之薄膜。由DSC發現它們的玻璃轉移溫度範圍分別是139~174℃之間,並經由TGA分析,在氮氣及空氣下的10%重量損失溫度分別是370~417℃與413~423℃之間。
以2,2’-bis(2-octadecyloxyphenoxy)-5,5’-diaminobiphenyl二胺單體與數種芳香族二酸酐製備的聚醯亞胺,得到低的固有黏度,黏度範圍在0.10~0.16 dL/g之間,此系列的聚醯亞胺也具有好的溶解度,可溶於NMP、DMAc、THF與cyclohexanone等溶劑中。
A series of new polyimides, containing pendant long alkyl side chain groups were prepared via the solution condensation of aromatic diahydrides with 2,2’-bis(2-hexloxyphenoxy)-5,5’-diaminobiphenyl, 2,2’-bis(3-octadecyloxyphenoxy)-5,5’-diaminobiphenyl, and 2,2’-bis(2-octadecyloxyphenoxy)-5,5’-diaminobiphenyl. The inherent viscosities, solubility properties and thermal properties of the polyimides were investigated.
First, the poly(amic acid)s derived from 2,2’-bis(3-octadecyloxyphenoxy)-5,5’-diaminobiphenyl, had inherent of 0.15~0.21 dL/g. The DMA analysis reveals that the glass transition temperatures ranged from 141~180℃. In addition, the temperatures of 10% weight loss in nitrogen and the air ranged on 405~427℃ and 338~425℃, respectively. The polyimides 10 showed lower solubility as compared to the analogous polyimides 8.
Second, a series of polyimides were prepared by reaction of long alkyl-based diamines, 2,2’-bis(2-hexloxyphenoxy)-5,5’-diaminobiphenyl with various aromatic tetracarboxylic dianhydride. The polymer were prepared with moderate to high inherent viscosities (0.73~1.26 dL/g). The obtained polyimides were readily soluble in NMP, DMAc, THF, and cyclohexanone and gave flexible and tough films via solvent casting. These polyimides showed glass transition temperature in the range of 139~174℃ (by DSC) . Decomposition temperatures for 10% weight loss in nitrogen and the air ranged on 413~423℃ and 370~417℃, respectively.
Third, a series of polyimides were prepared by reaction of long alkyl-based diamines, 2,2’-bis(2-octadecyloxyphenoxy)-5,5’-diaminobiphenyl with various aromatic tetracarboxylic dianhydride. The polymers were prepared with moderate to low inherent viscosities (0.10~0.16 dL/g). The obtained polyimides were readily soluble in NMP, DMAc, THF, and cyclohexanone and gave inflexible film.
致謝................................Ⅰ
目錄................................Ⅱ
圖表索引............................Ⅴ
中文摘要............................ⅩⅠ
Abstract.........................ⅩⅠⅠⅠ
第一章 緒論........................1
1.1 液晶簡介........................1
1.2 配向膜簡介.......................2
1.3 配向膜的種類………………………...4
1.4 聚醯亞胺簡介......................8
1.5 聚醯亞胺的合成方法………….......11
1.6 聚醯亞胺的改質及其應用..........14
1.7 擬進行之研究...................17
第二章 實驗.......................19
2.1 實驗藥品.....................19
2.2 實驗程序...........................24
2.2.1 單體製備....................24
2.2.2 聚醯亞胺之合成...............33
2.3 單體鑑定及聚合物之物性與化性分析......35
第三章 物性、化性分析與討論.....................37
3.1 2,2’-bis(2-hexloxyphenoxy)-5,5’-diaminobiphenyl....37
3.1.1 單體製備........................37
3.1.2 聚醯亞胺之合成..................38
3.1.3 聚醯亞胺的物性分析.......................39
3.2 2,2’-bis(2-phenoxyoctadecyloxy)-5,5’-diaminobiphenyl..41
3.2.1 單體製備...................................41
3.2.2 聚醯亞胺之合成..............................42
3.2.3 聚醯亞胺的物性分析..............................43
3.3 2,2’-bis(3-phenoxyoctadecyloxy)-5,5’-diaminobiphenyl..44
3.3.1 單體製備.......................................44
3.3.2 聚醯亞胺之合成............................45
3-3-3 聚醯亞胺的物性分析.............................46
第四章 結論.................................48
4.1 2,2’-bis(2-hexloxyphenoxy)-5,5’-diaminobiphenyl......48
4.2 2,2’-bis(2-phenoxyoctadecyloxy)-5,5’-diaminobiphenyl..49
4.3 2,2’-bis(3-phenoxyoctadecyloxy)-5,5’-diaminobiphenyl..50
參考文獻...................................................51
自述.....................................................106
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