以聚苯乙烯磺酸钠接枝聚乙二醇为模板的聚3,4-二氧乙烯噻吩水分散体的制备及性能  

Synthesis and Characterization of Poly(3,4-ethylenedioxythiophene)Aqueous Dispersions with Poly(sodium styrene sulfonate)Grafted Poly(ethylene glycol)as a Template

作　　者：顾佳欢 范小兴 李坚[1] 汪称意[1] 任强[1] 

机构地区：[1]常州大学材料科学与工程学院材料化学系,江苏常州213164

出　　处：《高分子材料科学与工程》2016年第7期147-152,158,共7页Polymer Materials Science & Engineering

基　　金：江苏省高等学校大学生实践创新训练计划项目

摘　　要：以苯乙烯磺酸钠(SSNa)和烯丙基聚乙二醇(APEG)为原料,制备了不同结构的聚苯乙烯磺酸钠接枝聚乙二醇(P(SS-APEG))共聚物,并以此为模板制备了聚3,4-二氧乙烯噻吩∶聚(苯乙烯磺酸钠-烯丙基聚乙二醇)(PEDOT∶P(SS-APEG))水分散体;研究了聚乙二醇(PEG)链段长度对PEDOT∶P(SS-APEG)结构与性能的影响。结果表明,通过自由基共聚,成功制备了聚苯乙烯磺酸钠接枝聚乙二醇(P(SS-APEG))共聚物。以P(SS-APEG)为模板时,EDOT的聚合速率加快,分散体粒径随APEG相对分子质量的增加而增大,水分散体表面张力减小。PEDOT薄膜的方块电阻明显降低,且APEG的相对分子质量越小,薄膜的方块电阻越低,导电性越好。当APEG的相对分子质量为700,n(SSNa)∶n(APEG)=32∶1,m(EDOT)∶m(P(SS-APEG))=1∶3时,PEDOT∶P(SS-APEG)薄膜的方块电阻较PEDOT∶PSS(m(EDOT)∶m(PSS)=1∶3)薄膜下降了3倍。The poly（sodium styrene sulfonate）grafted poly（ethylene glycol）copolymers（P（SS-APEG））were synthesized via free radical polymerization with sodium styrene sulfonate（SSNa）and allyl poly（ethylene glycol）（APEG）as monomers.Then,poly（3,4-ethylenediox- ythiophene）∶poly（sodium styrene sulfonateallyl poly（ethylene glycol））（PEDOT：P（SS-APEG））aqueous dispersions were obtained using P（SS-APEG）as dopant and template.The effects of chain length of PEG on the performance of PEDOT∶P（SS-APEG）aqueous dispersions were investigated.Results show that the grafted copolymers P（SS-APEG）s are successfully synthesized and the polymerization rates of EDOT increase when P（SS-APEG）s is used as the template.The particle sizes of PEDOT∶P（SS-APEG）aqueous dispersion become large with the increasing of PEG chain length,and the surface tensions of PEDOT∶P（SS-APEG）aqueous dispersions become lower than those of PEDOT∶PSS.The square resistances of PEDOT∶PSS films decrease obviously when P（SS-APEG）s are used as template.And,shorter PEG chain length in P（SS-APEG）provides lower square resistances to PEDOT∶P（SSAPEG）films.Especially,compared with PEDOT∶PSS film,the square resistance of PEDOT∶P（SS-APEG）film is three times lower when the molecular weight of APEG is 700,the mole ratio of SSNa and APEG is 32∶1,and the mass ratio of EDOT and P（SS-APEG）is 1∶3.

关 键 词：聚3 4-二氧乙烯噻吩 聚苯乙烯磺酸钠 烯丙基聚乙二醇 导电性 

分 类 号：O632.13[理学—高分子化学]