以聚乙二醇（PEG1000）、异佛尔酮二异氰酸酯（IPDI）以及2,4-二氨基苯磺酸钠（DASS）为原料,通过预聚体法合成了磺酸盐型水性聚氨酯分散液（SWPU）。再以FeCl3为氧化剂,采用原位化学氧化聚合法使吡咯（Py）在SWPU中聚合,制备了磺酸盐型水性聚氨酯/聚吡咯（SWPU/PPy）导电复合材料。研究了制备条件（如投料比和投料顺序）、反应条件等对磺酸盐型水性聚氨酯/聚吡咯（SWPU/PPy）导电复合材料电阻性能的影响。红外光谱图表明PPy与SW-PU分子间存在氢键缔合。实验结果亦表明,最佳制备条件为：Py浓度为30%,n（FeCl3）/n（Py）=2.2,投料顺序为SWPU→Py→FeCl3,反应温度0℃（冰浴）,反应时间为3h,SWPU/PPy电阻率可达到1Ω·cm。
A series of waterborne sulfonate polyurethanes dispersions (SWt'U) was prepared through prepoty- merization method by reacting polyethylene glycol (PEG1000) and isophorone diisocyanate (IPDI) with 2,4-dia- mind-benzene sulfonie acid sodium salt (DASS) as chain extender. Then FeCI3 was employed as oxidant, therefore SWPU/polypyrrole (SWPU/PPy) conductive composite was prepared by in situ ehemical oxidative poly- merization of pyrrole (Py) in SWPU dispersions. The effects of different preparative conditions including feeding ratios, feeding sequences and reaction conditions on the conductivity of SWPU/PPy conductive composite were studied. Fourier infrared spectra demonstrated the presence of hydrogen-bonding interactions between SWPU and PPy. Results also showed that SWPU/PPy resistivity can achieve 1Ω·cm, when feeding sequence: SWPU →Py→FeCl3, Py concentration was 30%, reaction temperature was 0℃, reaction time was 3h and n (FeCl3) / n (Py) =2.2.
参考文献
| [1] | 张鹏 .聚苯胺/聚氨酯/环氧树脂复合体系的研究[D].武汉理工大学,2010. |
| [2] | 丁春跃 .原位聚合法制备聚吡咯包覆型导电纸的工艺与机理研究[D].东北林业大学,2010. |
| [3] | 林东恩,胡守印,张逸伟.新型磺酸盐聚氨酯表面活性剂的制备及性能[J].华南理工大学学报(自然科学版),2011(03):32-36. |
| [4] | 李倩倩,黄健涵,刘素琴,关鲁雄,黄可龙.聚吡咯的化学氧化合成及其对金属镁的防腐蚀性能研究[J].功能材料,2008(03):526-528. |
| [5] | Vanga Bouanga, C.;Fatyeyeva, K.;Baillif, P.-Y.;Khaokong, C.;Pilard, J.-F.;Tabellout, M..Dielectric relaxation phenomena and electric properties of conductive composite polyurethane/polyaniline films[J].Macromolecular symposia,2010:175-184. |
| [6] | Robila G.;Buruiana T.;Buruiana E.;Coman P.;Diaconu I. .Carboxylated polyurethane anionomers and their composites with polypyrrole[J].Journal of Applied Polymer Science,2000(11):1385-1392. |
| [7] | Diaconu I .Paul coman composite films based on polyure-thane ionomer polypyrrole and their properties[J].Inter-national Symposium on Electrets,1999,10:493-495. |
| [8] | Buruiana T;Diaconu 1 .Synthesis and characterization ofpolypyrrole polyure thane cationomer composites[J].DieAngewandte Makromolekulare Chemie,1997,245(01):139-147. |
| [9] | 陈京环,钱学仁.制备条件对聚吡咯/纸浆纤维导电纸导电性的影响[J].中国造纸,2007(07):4-7. |
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