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Enhancement of electro-conductivity of polyethylene/polyacetylene mixture by interfacial electro-polymerization

界面电聚合增强聚乙烯/聚乙炔混合物的导电性

基本信息

批准号：
09650750
负责人：
KAWAGUCHI Akiyoshi
金额：
$ 2.11万
依托单位：
Ritsumeikan University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

项目摘要

Ultra-high molecular weight polyethylene (UHMWPE) was crystallized from the solution in decaline in the state of gel. Polyacetylene (PA) was polymerized in the gel. The thus prepared mixture of UHMWPE and PA was processed in the form of sheet by pressing into a mold. The electro-conductivity of the as-prepared sheet reached 10ィイD1-1ィエD1 S/cm by doping Iodine. The electro-conductivity of drawn sheet in the direction parallel to the drawn direction(αμ) is 10ィイD1-6ィエD1 S/cm and that in the transverse direction(σィイD2γィエD2) 10ィイD1-10ィエD1 S/cm. The ratio of μ/σィイD2γィエD2 is 10ィイD14ィエD1. Although the electro-conductivity is expected to enhance by increase of molecular orientation by drawing, the value of drawn film is smaller than that of undrawn film, and to the contrary, it molecular orientation by drawing, the value of drawn film is smaller than that of undrawn film, and to the contrary, it decreases with further drawing. Two reasons are considered : 1)The PA is oxidized in the process of drawing since it was drawn in the air and 2)the connectivity of PA in the UHMWPE matrix is broken by drawing. The same experiment was done by preparing the mixture of isotactic polypropylene(iPP) and PA. Theαμand αィイD2γィエD2 of the drawn iPP/PA sheet were 10ィイD1-5ィエD1 S/cm and 10ィイD1-10ィエD1 S/cm, respectively. The ratio of σμ/σィイD2γィエD2 is as high as 10ィイD15ィエD1. Although the absolute values of electro-conductivity of these sheets were not always high, their high anisotropy of the drawn samples is significant result of the present work, because so far there are no such materials as this.Our final object is to prepare a thin, electro-conductive film by electro-polymerization of other electro-conductive polymer on the UHMWPE/PA mixture, by using it as an electrode. The electro-conductivity of the present mixture is not high enough for the purpose. It will be tried to improve the electro-conductivity of the mixture.

超高分子量聚乙烯（UHMWPE）在十氢化萘溶液中以凝胶态结晶。聚乙炔（PA）在凝胶中聚合。将由此制备的UHMWPE和PA的混合物通过压入模具中以片材的形式加工。通过掺杂碘，所制备的薄片的电导率达到10 μ g/L D1-1 μ g/L D1 S/cm。拉伸板的平行于拉伸方向的电导率（αμ）为10 μ D 1 -6 μ D 1 S/cm，横向电导率（σ μ D 2 γ μ D 2）为10 μ D 1 -10 μ D 1 S/cm。μ/σイD2γ D2之比为10イD14 D1。虽然通过拉伸增加分子取向可以提高电导率，但是拉伸膜的电导率值小于未拉伸膜的电导率值，并且相反，通过拉伸增加分子取向，拉伸膜的电导率值小于未拉伸膜的电导率值，并且相反，随着进一步拉伸，电导率值减小。考虑到两个原因：1）由于PA是在空气中拉伸的，因此在拉伸过程中PA被氧化; 2）拉伸破坏了PA在UHMWPE基体中的连接性。通过制备等规聚丙烯（iPP）和PA的混合物进行相同的实验。拉伸的iPP/PA片材的αμ和α μ D2γ μ D2分别为10 μ D1-5 μ D1 S/cm和10 μ D1-10 μ D1 S/cm。σμ/σ μ D_2 γ μ D_2的比值高达10 μ D_15 μ D_1。虽然这些片材的电导率的绝对值并不总是高的，它们的高各向异性的拉伸样品是本工作的显著结果，因为到目前为止，没有这样的材料，因为这。我们的最终目的是通过电聚合的其他导电聚合物的UHMWPE/PA混合物，通过使用它作为电极，制备一个薄的，导电膜。目前混合物的电导率对于该目的来说不够高。将尝试改善混合物的导电性。