苯胺寡聚體�氨酯�奈米銀之PU膜物性探討-導電、流變，熱裂解研究

The Study on Conductive Rheological and Thermal Degradation of Oligoanilines Polyurethane Nano Silver PU Film

梁章洪(Chang-Hung Liang)

指導教授 ： 芮祥鵬

國立臺北科技大學/工程學院/有機高分子研究所/碩士(2007年)

摘要

本實驗將苯胺二聚體為單體利用氧化劑氯化鐵(FeCl3)合成苯胺四聚體。
以不同分子量的醚型聚氧四亞甲基二醇和二苯甲基二異氰酸鹽反應生成預聚合物，再以催化劑三乙基胺將苯胺四聚體接在預聚合物的頭尾端上形成共聚物，來改善導電性高分子聚苯胺易碎裂的性質。並且在一開始時在聚氧四亞甲基二醇中以電弧放電法加入奈米銀來探討加入之性質差異。

經FTIR鑑定奈米複合物的化學結構，及使用GPC來得知分子量及分子量分佈。利用DMA研究奈米複合物之物性，利用Burger’s modle來模擬creep/recovery的行為。

奈米複合物可由UV/Vis得知摻雜效應及其性質。利用TGA探討其熱裂解溫度及殘餘量的關係，並利用小澤法(Ozawa’s method)計算熱裂解所需要的能量。最後使用四點探針量測添加奈米銀以及摻雜後的複合薄膜的導電度。

關鍵字

聚氨酯 ； 苯胺四聚體 ； 奈米銀 ； 導電薄膜 ； 熱裂解

並列摘要

In this study，tetraaniline was synthesized by using dianiline as monomer and
FeCl3 as oxidant。Prepolymer was synthesized with different molecular weights of
poly(tetramethyleneglycol)and 4,4-diphenylmethane diisocyanate，ditetraaniline-capped copolymer was synthesized through reacting tetraaniline with prepolymer by catalyst of triethylamine，in order to improve the mechanical property of polyaniline。And we investigate the property after using arc discharge method addition nano silver in poly(tetramethylene glycol)。

Nanocomposites chemical structures have been investigation by FTIR。GPC dates showed the molecular weights and molecular weghts distribution。The physical properties of nanocomposites were investigated by DMA，the dates of creep/recovery was fitted by Burger’s model。

The electronic properties of the doped nanocomposites were studied by using UV/Vis instrument。The thermal degradation behavior of nanocomposites were examined by TGA analysis。We use Ozawa’s method to estimate the thermal degradation energy of nanocomposites。Finally we using the four-probe to measure the conductivity for these conductive films。

並列關鍵字

Polyurethane ； Tetraaniline ； nano silver ； Conductive film ； Thermal degradation

參考文獻

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