聚苯胺和聚对苯二甲酰对苯二胺导电复合物的研究  

CONDUCTIVE COMPOSITE OF POLYANILINE AND POLY (P-PHENYLENE-TEREPHTHALAMIDE)

作　　者：毕先同[1] 王淳 张广平[1] 宝净生[1] 

机构地区：[1]中国科学院化学研究所

出　　处：《合成纤维工业》1991年第2期26-29,共4页China Synthetic Fiber Industry

摘　　要：聚对苯二甲酰对苯二胺(PPTA)与导电性聚苯胺(PAn)共混,得到一种既有PPTA的液晶性,又有PAn导电性的全新材料。PPTA和PAn以不同质量比共溶于浓硫酸后,可制成线材及薄膜,在1mol/1HCl水溶液中成型及拉伸。实验结果表明:PPTA的液晶性随PAn加入量的增加稍有减弱;线状PPTA/PAn的抗张强度随PAn混入量的增加而增大(从41.20N/mm^2增至44.80N/mm^2);断裂伸长与PAn混入量的多少无关(仍保持在4%),PPTA/PAn复合物的电导率随PAn含量的增加而升高,当PPTA:PAn=2:1(质量比)时,其电导率为2.3×10^(-1)S/cm,较纯PAn(3-5S/cm)小一个数量级,复合物的衍射图在2θ=22.7°及25°处有两个峰,分别与纯PPTA及统PAn的峰的位置相同,因此说明二者是以分子复合形式存在。SEM图表明复合物线材表面呈取向排列,且PPTA与PAn混合均匀。After blending PPTA [poly (p-phentlene-terephthalamide)] with conductivePAn (polyaniline), a new material can be produced with both the liquid crystalproperty of PPTA and the conductivity of PAn. When dissolving PPTA and PAn inconcentrated sulfuric acid with different proportions of mass, the linear materialand film can be made which are formed and drawn in HCl aqueous solution with1mol/LHCl. The experimental results show that the liquid crystal property of PPTAbecomes weaker as the amount of PAn increases, and that the tensile strength oflinear PPTA/PAn increases with the increasing of amount of PAn (from 41.20N/mm^2up to 44.80N/mm^2), but PAn does not affect the elongation at break of the compo-site (remains 4%). The conductivity of PPTA/PAn increases with increasing ofPAn. When PPTA:PAn=2:1, σ=2.3×10^(-1)S/cm, which is one order of magnitudelower than that of pure PAn (σ=3-5S/cm) . There are two main peaks on thespectragram of PPTA/PAn composite at 2θ=22.7° and 25.0°, which are coincidewith those of pure PPTA (2θ=22.8°) and pure PAn (25.1°) respectively, so itmakes sure that PPTA/PAn is a molecular composite.

关 键 词：聚苯胺 PPTA PAN 共混 导电性 

分 类 号：O633.21[理学—高分子化学]