聚34乙撑二氧噻吩PEDOT的乳液聚合及其性能研究.pdfVIP

摘 要 导电聚合物自发现以来，由于它们具有许多独特的光、电、磁性能，在电极 材料，防静电涂料、便携能源、显示设备等方面有十分重要的潜在应用。相比聚 吡咯（PPY ）、聚苯胺(PANI)等导电聚合物而言，聚噻吩(PTH)及其衍生物环境热 稳定良好、易于制备、掺杂后拥有很高的电导性，因此拥有更广泛的用途。本文 以 PEDOT 为研究对象，通过乳液聚合合成了一系列的 PEDOT 乳液，考察了制 备的 PEDOT 乳液的稳定性，成膜性，导电性等性能，以期获得导电性能优异稳 定的纳米 PEDOT 乳液。 本论文选取聚对苯乙烯磺酸钠（PSSNa ）为表面活性剂和掺杂剂，FeCl •6H O （对甲基 3 2 苯磺酸铁（Fe(OTs) ））为氧化剂和催化剂，K S O 为氧化剂，考察了乳化条件，催化剂用 3 2 2 8 量，掺杂剂用量，氧化剂用量等反应条件对实验的影响。结果发现：乳化速度对乳液的导电 性能和稳定性影响不大，但是高的乳化速度有利于获得粒径小的 PEDOT 乳液；催化剂用量 对乳液的稳定性和反应速率有很大影响，催化剂用量过少时，反应速率太慢，用量过多时， 会降低乳液的稳定性；PSSNa 的用量对乳液的稳定性和导电性有一定影响，PSSNa 用量减 少会提高乳液的导电性能，但会降低乳液的离心稳定性，使用小分子樟脑磺酸和氨基磺酸进 行共掺杂时能提高乳液的导电性，但也会降低乳液的稳定性；使用有机溶剂助乳化可将合成 的 PEDOT 乳液的粒径降低至 50nm 以内，但是得到乳液无导电性能；双乳化聚合在一定程 度上能提高乳液的导电性能，但制备的乳液稳定性较差。 关键词：乳液聚合，导电聚合物，PEDOT，薄膜，乳液 ABSTRACT Conductive polymers have very important potential applications in the electrode materials, anti-static coating portable energy display device due to their unique properties. Compared with the conducting polymer polypyrrole(PPY), polyaniline(PANI) etc, polythiophene(PTH) and its derivatives have better environment stability, simpler preparation process, higher electrical conductivity after doped, leading to a more wide range of purposes. PEDOT was studied as the research object in this paper. A series PEDOT emulsion were prepared through emulsification polymerization. The stability and film-forming conductivity of the PEDOT emulsion were studied, hoping to get the nano PEDOT emulsion with good conductive and good stability. In this paper, the poly(sodium-p-styrenesulfonate)(PSSNa) was used as surfactant and doping agent, FeCl •6H O(or iron(III) p-Toluenesulfonate(Fe(OTs) )) was used as the