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实验采用Fe~(3+)-H_2O_2催化氧化体系,以水为介质,十二烷基苯磺酸钠(十二烷基苯磺酸钠)为乳化剂,室温下制备聚噻吩(PTP)有机蒙脱土(OMMT)复合材料。当有机蒙脱土/聚噻吩=2g/ml时,反应时间为12 h,制得复合材料电导率最高,其值为3.44×10~(-5)S/cm;在Fe~(3+)-H_2O_2和过硫酸铵(APS)两种氧化体系下,分别采用苯胺(ANI)和吡咯(PY)对聚噻吩-有机蒙脱土进行修饰,制得聚苯胺-(聚噻吩-有机蒙脱土)和聚吡咯-(聚噻吩-有机蒙脱土)复合材料的电导率均达到10~(-2)S/cm~10~(-1)S/cm,较未修饰时提高了10~3倍~10~4倍。傅里叶红外光谱(FTIR)和X射线衍射(XRD)表明噻吩(TP)进入有机蒙脱土层间聚合,形成插层复合,经苯胺和吡咯修饰后,插层结构没有被破坏;重分析(TG)则证实复合后材料热稳定性得到提高,500℃时失重在11.69%左右,但经修饰后材料的热稳定性有所降低500℃时失重达到80%以上。扫描电镜(SEM)表明在Fe~(3+)-H_2O_2氧化体系下,经修饰后材料形貌更规整,且均为球形。
The catalytic oxidation system of Fe ~ (3 +) - H_2O_2 was used in this experiment. Polythiophene (PTP) was prepared at room temperature using water as the medium and sodium dodecyl benzene sulfonate (sodium dodecyl benzene sulfonate) as emulsifier. Montmorillonite (OMMT) composites. When the organic montmorillonite / polythiophene = 2g / ml, the reaction time was 12 h, the conductivity of the composites was the highest (3.44 × 10 -5 S / cm) Poly (thiophene-montmorillonite-montmorillonite) were modified by polyaniline-poly (thiophene-montmorillonite) with polyaniline-poly (aniline) (ANI) and pyrrole ) And polypyrrole - (polythiophene - montmorillonite) composites reached 10 ~ (-2) S / cm ~ 10 ~ (-1) S / cm and 10 ~ 3 Times ~ 10 ~ 4 times. Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) showed that thiophene (TP) intercalated into the organic montmorillonite and formed intercalation complexes. After aniline and pyrrole were modified, the intercalated structure was not destroyed. (TG), the thermal stability of the composites was improved, and the weight loss was about 11.69% at 500 ℃. However, the thermal stability of the modified materials was reduced, and the weight loss reached more than 80% at 500 ℃. Scanning electron microscopy (SEM) showed that the morphologies of the modified materials were more regular and spherical in the Fe ~ (3 +) - H_2O_2 oxidation system.