导电性聚酰胺聚苯胺共混物的研究

第33卷第8期1999年8月西安交通大学学报JOURNALOFXIANJIAOTONGUNIVERSITYVol.338Aug.1999/井新利1,杨庆浩1,郑茂盛1,蓝立文2(1.,710049,;2.):通过化学方法制备了导电聚苯胺包覆的共聚聚酰胺微粒(PA/PANIHCl),运用傅里叶变换红外(FTIR)光谱和紫外/可见(UV/Vis)光谱表征了其结构.电导率测试表明,PA/PANIHCl的电导率服从逾渗规律,逾渗阈值为17%.由于共聚聚酰胺(PA)的熔点低,PA/PANIHCl在130时有良好的热塑性,可制成导电性共混高分子材料,但热处理却使电导率下降了1~2个数量级.对PA/PANIHCl脱掺杂得到的PA/PANIEB,在间甲酚中有良好的溶解性,而且当聚苯胺含量低于10%时,能全部溶解于间甲酚.:聚苯胺;聚酰胺;导电高分子;共混:O631.1StudyonElectricalConductivePolyamide/PolyanilineBlendsJingXinli1,YangQinghao1,ZhengMaosheng1,LanLiwen2(1.XianJiaotongUniversity,Xian710049,China;2.NorthwesternPolytechnicalUniversity)Abstract:Electricalconductivepolyanilinecoatingcopolyamideparticles(PA/PANIHCl)werepreparedthroughchemicalmethod,whichwerecharacterizedbyFTIRandUV/Visspectra.Themeasurementofelectricalconductivityshowsthattheirconductivityfollowspercolationlawwithaverylowthresholdof17%.Becauseofthelowmeltingpointofcopolyamide(PA),thePA/PANIHClhasgoodthermoplasticpropertyat130andconductiveblendwithgoodmechanicalpropertycanbeobtainedbysintering.Buttheconcutivitydecreases1to2magnitudes.Dedopedblends(PA/PANIEB)canbedissolvedinmcresolandwhenthecontentofPANIinblendislowerthan10%,theblendiswhollydissolvedinmcresol.Keywords:polyaniline;polyamide;electricalconductivity;blend,(,),.,.,,[1~2];(),,[3~4].,.:19981209.:,,19641,,.:(97G53076).,.,/.12.33g(0.025mol)(,)120g(1mol/dm3),(PA)(177m;:16~18;:130,),10min.57g(0025mol)(,)35g,,201,30min,1h,,(1mol/dm3).6048h,(PANIHCl)PANIHCl((PA/PANIHCl).PANIHClw=(m2-m1)/m2,m1PA,m2PA/PANIHCl.5%,PA(PA/PANIEB).,PANIHClPA/PANIHCl(18MPa)20mm2~3mm,.PA/PANIHCl130,.,SZ85.(Nicolet360X,)/(UV-240,),;S-2700.22.111PANIEB,PANIEB.PA/PANIEB,,.PA,.PA/PANIHCl(IR),,11316cm-1,[5].PANIEBPA/PANIEB/,320nm510nm,*.PANIHClPA/PANIHCl/,,400nm634nm,[5].,.2.2,,,c.,;,.,[6]16%.,,Reghu[7],PANICSA/PMMA(CSA,PMMA)10%,PANICSA.PA/PANIHClPAPANIHCl,PANIHCl(88S/cm),,PA/PANIHCl.1PA/PANIHClPANIHCl(PAPANI,),,PANI表1IR特征吸收峰(cm-1)PANIEBPA/PANIEBPA/PANIHCl1587.6()1588()1554.0()CC1497.5()1508.1()1467.5()CC1295.9()1300.7()1299.1()CN1155.4()1164.2()1131.6()NQN822.7()828.9()798.9()CC758,:/1PA/PANIHClHCl3%,01S/cm.[6]=C(-c):;C;c;.lglg,c=17%.,.2.3PA/PANIHCl,(2a).130,PA,PAPA.PA/PANIHCl,PA()PANIHCl(),PA/PANIHCl.,PA(2b~2d),.,PA/PANIHCl(3),.,130,.20min,.2:,,,,;,PA,,,,(a)(b)13020min(c)13040min(d)13060min2PA/PANIHCl(=7.06%).4PANIHClPA/PANIHCl13020min,,PANIHCl,PA,PANIHCl.(5).3PA/PANIHCl(=706%)7633(a)PANIHCl313%(b)PANIHCl13.2%(c)PANIHCl02%(d)PANIHCl2.77%4PA/PANIHCl(130/20min)2.4PA,PANIHCl,,,N,PANIHCl.PANIEBPA/PANIEB,PANI706%,PA/PANIEB,,.5PA/PANIHCl(130/20min)3,,(17%).PA/PANIHCl/,/.:[1]ImSS,ByunSW.Preparationandpropertiesoftransparentandconductingnylon6basedcompositefilms.JofApplPolymSci,1994,51:1221~1229.[2]ByunSW,ImSS.Thermalstabilitystudiesoftransparentconductingpolyanilinecompositefilmsontheirconductivityandopticalspectra.JofApplPolymSci,1994,56:425~431.[3]GohSH,ChanHSO,OngCH.Miscibiltyofpolyaniline/poly(vinylacetate)blends.Polymer,1996,37(13):2675~2679.[4]ChenS,HwangG.Structuresandpropertiesofthewatersolubleselfaciddopedconductingpolymerblends:sulfonicacidringsubstitutedpolyaniline/poly(vinylalcohol)andpoly(anilinecoNpropanesulfonicacidaniline)/poly(vinylalcohol).Polymer,1997,38(13):3333~3346.[5]HuH,CadenasJL,SanigerJM,etal.Electricallyconductingpolyanilinepoly(acrylicacid)blends.PolymIntern,1998,45:262~270.[6]ZallenR...:,1998.153~232.[7]ReghuM,YoonCY,MosesD,etal.Superlocalizationoftheelectronicwavefunctionsinconductivepolymerblendsatconcentrationsnearthepercolationthreshold.Macromolecules,1993,26(26):7245~7249.(管咏梅)778,:/