聚苯胺/銀粒子-奈米碳管與聚胺酯合成複合材料之導電性與物性探討

Synthesis, conductivity and Physical Property Investigation of Oligoanilines–silver particles/Carbon Nanotube/PU Composite Materials

張基昱(Chi-Yu Chang)

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(2011年)

摘要

本研究是以苯胺二聚體做為單體，利用硝酸銀(AgNO3)為氧化劑聚合成苯胺四聚體，藉由氧化還原方式還原銀粒子。以醚型聚氧四亞甲基二醇(PTMO)分子量為2900作為軟鏈段，二苯甲基二異氰酸鹽(MDI)作為硬鏈段，反應生成PU預聚物。再以三乙基胺做為催化劑，將含有銀粒子之苯胺四聚體接於預聚合物之頭尾兩端形成共聚物。藉以此方法改散聚苯胺易碎裂之性質。

將合成好之共聚物，以溶劑二甲基甲醯胺溶解後，添加單壁碳管/多壁碳管，克服共聚物不導電的部分。加入奈米碳管分散劑，及十二烷基苯磺酸(DBSA)做苯胺四聚體摻雜劑，烘乾成膜形成具有彈性與導電性之薄膜複合材料。

並用FTIR鑑定共聚物之化學結構，使用DMA研究共聚物之物性及玻璃轉移溫度(Tg)，利用Burger’s modle模擬Creep/recovery之行為，以TGA做熱穩定性測試探討裂解溫度，最後使用阻抗計測試未拉伸之導電度，以及使用平行式拉伸儀後之導電度量測。

關鍵字

苯胺四聚體 ； 奈米碳管 ； 聚氨酯 ； 導電薄膜 ； 硝酸 ； 銀粒子

並列摘要

The study is based on tetraaniline synthesized by using dianline as monomer and silver nitrate(AgNO3) as a oxidant. The prepolymer was reacted by ether-type poly
poly(tetramethyleneglycol)(PTMO) as soft segments and 4,4-diphenylmethane diisocyanate (MDI) as hard segments with molecular weight 2900 and 250 respectively. Then using triethylamine as catalyst, the tetraaniline could connected end to end in two short of the pre-polymer to form copolymers. By this method to enhance the mechanical properties of bulk polyaniline.enhance the mechanical properties of bulk polyaniline.
The copolymer could be ass some Single-wall carbon(SWNT)/Multi-wall carbon(MWNT) as addition agent while the copolymer dissolve in DMF. Then we use Dodecyl benzene sulfonic acid (DBSA) as the SWNT/MWNT dispersant and the dopant of tetraaniline as well forming an elasitic and conductive nanocomposite.
The structures of nanocomposites chemical were investigated by FTIR spectra. The physical properties of nanocomposites were investigated by DMA. The datas of creep/recovery was fitted by Burger’s model. The conductivity for the conductive film by use the two-probe measure.

並列關鍵字

Tetraaniline ； Carbon nanotubes ； Polyurethane ； Nanocomposite ； nitric acid ； silver particles

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