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应用实验设计法包括部分析因设计与中心组合设计,优化自掺杂磺酸化聚苯胺的导电性.部分析因设计发现,需用低温(4℃)、短反应时间(1 h)和少量发烟硫酸(10 mL)等实验条件进行磺酸化反应才能得到好的导电性(ca.127 mS.cm-1);中心组合设计与确认实验表明,其最佳导电性(ca.141 mS/cm)的磺酸化条件是4℃、75 m in反应时间以及8 mL 30%的发烟硫酸.应用傅立叶变换红外光谱(FTIR)、四探针与X光光电子能谱等分析制备的材料.此外,发现磺酸化速率与程度与聚合反应时所使用的酸有关.
The experimental design method includes partial factorial design and center combination design to optimize the conductivity of self-doping sulfonated polyaniline.Partial factorial design shows that low temperature (4 ℃), short reaction time (1 h) (Ca.127 mS · cm-1) obtained by sulfonation reaction under the experimental conditions of 10% sulfuric acid (10 mL), nicotine sulfate (10 mL) and so on. The center combination design and confirmation experiment showed that the best conductivity (ca.141 mS / cm ) Was 4 ° C for 75 mins reaction time and 8 mL of 30% fuming sulfuric acid.The prepared material was analyzed by Fourier transform infrared spectroscopy (FTIR), four-probe and X-ray photoelectron spectroscopy, etc. In addition, The rate and extent of sulfonation was found to be related to the acid used during the polymerization.