陽離子型聚(苯乙烯-丙烯酸丁酯)-聚苯胺核殼形態奈米導電薄膜之製備

Preparation of Conductive films of Polyaniline-coated Poly(styrene-butyl acrylate) core-shell Latexes

蕭強仁(Chiang-Jen Hsiao)

指導教授 ： 廖文彬

國立臺灣大學/工學院/材料科學與工程學研究所/碩士(2005年)

https://doi.org/10.6342/NTU.2005.01596

摘要

本研究採用無乳化劑乳化聚合，合成陽離子型共聚(苯乙烯-丙烯酸丁酯) 複合乳膠粒子，並於共聚合物表面包覆聚苯胺，形成核殼型態導電粒子。藉由SEM、TEM觀察包覆情形、乳膠粒子大小型態，以TGA、DSC進行熱分析。並利用高於核心乳膠玻璃轉移溫度之加工溫度，使聚(苯乙烯-丙烯酸丁酯)分子鏈流動，製備成共聚(苯乙烯-丙烯酸丁酯)-聚苯胺導電薄膜。
本研究發現影響導電度高低與聚苯胺的包覆以及核部共聚合物的流動性有關。最後則是探討有機酸再摻雜後的導電薄膜其導電度劣化、熱穩定性質與導電機制。

關鍵字

核殼形態複合乳膠顆粒 ； 聚苯胺 ； 苯乙烯 ； 丙烯酸丁酯 ； 導電薄膜 ； 無乳化劑乳化聚合 ； 再摻雜

並列摘要

The cationic copoly(styrene- butyl acrylate) latexes were synthesized by emulsifier-free emulsion polymerization. Utilizing copolymer particles as seeds, the polyaniline was synthesized in situ and coated onto the surface of particles. Thus, the conductive polyaniline–coated poly(styrene- butyl acrylate) core-shell latexes were synthesized. The morphology of core-shell latex particles were observed by SEM, TEM, and the thermal analysis were studied by the TGA and DSC. Their were made by casting and heating the latex particles above the glass transition temperature of copolymer.
This research shows that influenced of electric conduction about to wrap up of polyaniline and mobility of copolymer. Finally, when the organic acid-redoped conductive film , the conductivity degradation、thermal stability and conductive mechanism was studied.

並列關鍵字

core-shell latex ； polyaniline ； styrene ； (n-Butyl acrylate) ； conductive film ； emulsifier-free ； redoping

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