以氧化聚合法製備聚吡咯透明導電PET膜之研究

Synthesis and characterization of transparent conducting polypyrrole/PET film via oxidation polymerization

鄭佩佩(Cheng-Pei pei)

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(2008年)

https://doi.org/10.6841/NTUT.2008.00126

摘要

隨著消費性電子資訊產品朝向輕、薄、短、小之設計理念發展，相關零組件在送至組配廠前，需要以一層具有抗靜電或防電磁波的包覆層進行保護，以確保在組裝前這些零組件不會因為運送、保存等環境而有所損壞，因此所使用的包裝材與防靜電或防電磁波材料也需要有上述的功能。過去一般消費性電子資訊產品所使用的材料有金屬材料，但是其有加工成本高、不易撓曲、以及材質較重等缺點，對於微型化資訊產品應用會有所限制，同時也因為這些材料不具有穿透性，常常無法及時由外包裝直接檢視產品，因此為因應此一問題，本研究旨在探討一種新的方法製作可撓式、具有穿透性的有機導電薄膜。
本研究主要是在探討一種新的合成方法以及一種表面處裡步驟，用以製作具有可撓性、穿透性之有機導電薄膜，其製作方式是以聚對苯二甲酸乙二酯(Polyethylene terephthalate, PET)為基板，以O2電漿進行表面親水性改質，再於此改質基板上沉積一具有提升附著性的自組裝薄膜(SAMs)，最後再將吡咯 (pyrrole)單體合成在此基板之上。基板表面的自組裝薄膜層(SAMs)與聚吡咯(Polypyrrole)導電層厚度分別為250nm與350nm，經電性量測後發現導電度為10-4S/cm，且附著性達到最高等級5B而透光度也可提升至17.2%。
經由自組裝薄膜層(SAMs)與聚吡咯(Polypyrrole)導電處裡後之聚對苯二甲酸乙二酯(Polyethylene terephthalate, PET)基材，具有優異的導電特性與透明性，未來本研究成果於軟性電子基材與包裝材將有廣泛之應用潛力。

關鍵字

聚吡咯 ； 表面改質 ； 自組裝薄膜

並列摘要

In this reaserch, we disclose a novel method to produce a thin film which has better conductivity and flexibility as followed. Function of the O2 plasma trimming procedure is for modification Polyethylene terephthalate (PET) surface properties from hydrophobic to hydrophilic, which will increase a hydrophilic adhesion layer to deposit on the PET film. The adhesion layers are Self-Assembled Membranes (SAMs) including a negative ion polyelectrolyde and a cation polyelectrolyde. We employ a dipping method to deposite SAMs on the PET film drying at 40℃ in 30 min. After the deposition SAMs process, we deposit polypyrrole on the SAMs. Pyrrole is dispersed in the 5 -10 wt% FeCl3 aqueous solution and PET film is put into the solution for 4 hours under abient temperature and dried in the oven.
The conductivity of the Polyethylene terephthalate-polypyrrole (PPy-PET) composite film is 10-4 S/cm which is measured by using the standard four-probe method at room temperature. The thickness of SAMs layer and Polypyrrole layer are measured by Dectek profile of 250 nm and 350 nm, respectively. The highest grade of adherent is 5B from cross-cut testing method, and the transmittance is 15% measured by light penetrometer.
The blend films are stable and retain the mechanical characteristics of the PPy-PET. The PPy-PET thin film can be used to apply as semi-conducting tapes for cable claddings, shielding, and antistatic.

並列關鍵字

polypyrrole, ； surface treatment, ； self-assembled monolayers (SAMs)

參考文獻

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