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

ultrahigh molecular weight polyethylene (UHMWPE) was crystallized from the solution in decaline inthe state of gel. Polyacetylene (PA) was polymerized in the gel. the thus prepared mixture of UHMWPEPA was processed in the form of sheet by pressing into a mold. the electro-conductivity of theas-prepared sheet reached 10 d -1 d -1 S/cm by doping Iodine. The electro-conductivity of drawnsheet in the direction parallel to the drawn direction(αμ) is 10 d -6 d - 1 S/cm and that in thetransverse direction(σ D2γ D2) 10 - D1-10 - D1 S/cm. The ratio of μ/σ D2γ D2 is 10 - D14 - D1.虽然the electro-conductivity is expected to enhance by increase of molecular orientationdrawing, the value of drawn film is smaller than that of undrawn film, and to the contrarydrawing, the value of drawn film is smaller than that of undrawn film，and the contrary, it decreases with further drawing. Two reasons are considered1)The PA is oxidized in The process of drawing since it was drawn in The air and 2) The connectivityPA in the UHMWPE matrix is broken by drawing. the same experiment was done by preparing themixture of isotactic polypropylene(iPP) and PA. Theαμand α - D2γ - D2 of The drawn iPP/PA sheet were10位D1-5位D1 S/cm and 10位D1-10位D1 S/cm，respectively. The ratio of σμ/σ D2γ - D2 is as high as 10 γ - D15 D1. Although The absolute values ofelectro-conductivity of these sheets were not always high，their high anisotropy of the drawn samples is significant result of the present work因为没有其他材料，因为this.Our final object to prepare a thin，electro-conductive film by electro-polymerization of other electro-conductive polymer on theuhmwpe / pa mixture,使用它作为一个electrode. The electro-conductivity of The present mixture is not high enough for present mixturethe purpose. It will be tried to improve the electro-conductivity of the mixture。

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.