聚苯胺/纸浆纤维复合制造导电纸(Ⅰ)——吸聚条件对导电纸性能的影响

Conductive Paper Manufactured with the Composite of PAn/Pulp Fiber(Ⅰ)——Effects of Adsorption and Polymerization Conditions on the Performances of Conductive Paper

采用原位吸附聚合法使苯胺聚合于纸浆纤维的微孔壁中制备了导电纸。系统地研究了氧化剂K2S2O8和(NH4)2S2O8用量、反应温度、反应时间等对导电纸表面电阻率的影响,优化了制备导电纸的最佳吸聚条件:聚合时间105 min,反应温度5℃,氧化剂的用量取决于氧化剂的种类,当K2S2O8为氧化剂时,氧化剂与苯胺质量比为1∶2最佳,导电纸的表面电阻率为481Ω/cm2;当(NH4)2S2O8为氧化剂时,氧化剂与苯胺质量比为3∶4最佳,导电纸的表面电阻率可达108Ω/cm2。作为氧化剂,(NH4)2S2O8优于K2S2O8。

In this paper, aniline was polymerized into the micro-pore wall of the pulp fiber by in-situ adsorption polymerization process in order to manufacture conductive paper. The effects of different reaction conditions including amount of oxidant （potassium persulfate or ammonium persulfate）, reaction temperature and reaction time on the surface resistance of conductive paper were studied in detail. The optimum adsorption polymerization conditions were： polymerization time 105 minutes, reaction temperature 5℃. The mass ratio of oxidant to aniline is dependent on the types of oxidant. When potassium persulfate was used as oxidant, the optimum mass ratio of oxidant to aniline was 1：2 and the surface resistivity of the conductive paper was 481 Ω/cm^2. However, the optimum mass ratio of oxidant to aniline was 3：4 and the surface resistivity was up to 108 Ω/cm^2 when ammonium persulfate was used as oxidant. Thus, ammonium persulfate is better than potassium persulfate as oxidant.