采用化学镀法对聚苯乙烯(PS)微球进行表面镀镍,制备导电性能良好的PS/Ni复合微球。通过扫描电子显微镜、傅里叶红外光谱仪、X射线衍射仪和能量色散谱仪对PS/Ni复合微球的形貌及化学成分进行分析,并采用四探针电阻率测试仪测试PS/Ni复合微球的导电性,研究了化学镀液pH以及镍盐和还原剂质量浓度对PS/Ni复合微球形貌及导电性的影响。结果表明:随着pH的增大,镍颗粒增大,镍镀层厚度增加,包覆更完整;当pH=8,镍盐和还原剂质量浓度均为200g/L时,制备的PS/Ni复合微球镀层包覆完整、均匀且致密,其电阻率为9.5×10-2Ω·cm。
The polystyrene (PS)/Ni composite microspheres with good conductivity were prepared by electroless plating on the surface of PS microspheres.The morphology and chemical composition of PS/Ni microspheres after nickel plating were analyzed by scanning electron microscope(SEM),FT-IR spectroscopy(FT-IR),X-ray diffraction spectrometer(XRD) and energy dispersion spectrometer(EDS).Conductivity of PS/Ni tested by four point probe resistivity tester.And the effects of pH value,concentration of nickel salt and reducing agent on the morphology and conductivity of nickel plating were studied.The results revealed that with the increase of pH,nickel particles enlarged,the thickness of nickel raised and the coating was more complete.While pH=8 and the concentration of nickel salt and reductant was 200g/L,the PS microspheres was coated completely,uniformly and densely,and its resistance was 9.5×10-2Ω·cm.
[1] Lee J H,Lee Y,Nam J D.Multi-metal shell coated with surface modification of polystyrene bead cores to improve its adhesion metal shell[J].Surface and Interface Analysis,2010,42(1):36-39.
[2] Lee J H,Oh J S,Lee P C,et al.Fabrication of nickel/gold multilayered shells on polystyrene bead cores by sequential electroless deposition processes[J].Journal of Electronic Materials,2008,37(10):1648-1652.
[3] Liu Dabo,Qi Hongfei,Cheng Bo.Preparation of PS@Au nano-catalyst and its catalytic performance[J].Journal of Materials Engineering,2012,7:1-4.
[4] Ma Y H,Zhang Q H.Preparation and characterization of monodispersed PS/Ag composite microspheres through modifified electroless plating[J].Applied Surface Science,2012,258:7774-7780.
[5] 吕晓丽,常海波.聚苯乙烯/银核壳结构纳米粒子的制备与表征[J].吉林师范大学学报:自然科学版,2006,27(4):17-19.
[6] Guo L,Ren S,Qiu T,et al.Synthesis of polystyrene@(silver-polypyrrole) core/shell nanocomposite microspheres and study on their antibacterial activities[J].Journal of Nanoparticle Research,2015,17(1):47.
[7] Yougen H,Tao Z,Pengli Z,et al.Preparation of monodisperse polystyrene/silver composite microspheres and their catalytic properties[J].Colloid and Polymer Science,2012,290(5):401-409.
[8] Zhang Jing,Jin Yonglong,Fang Jinghuai,et al.Preparation of PS/Ag core-shell composite microsperes by ultrasonic chemistry method[J].Materials Reports:Nanometer and New Material Album,2015(2):56-60.
[9] Chen Mingyue,Dong Lihong,Han Mingjuan,et al.Preparation and characterization of polystyrene/silver core/shell composite microspheres[J].Journal of Molecular Science,2014,30(5):383-389.
[10] Zhao W,Zhang Q,Chen T,et al.Preparation and thermal decomposition of PS/Ni microspheres[J].Materials Chemistry and Physics,2009,113(1):428-434.
[11] Jiang J,Haiqiang L U,Zhang L,et al.Preparation of monodisperse Ni/PS spheres and hollow nickel spheres by ultrasonic electroless plating[J].Surface & Coatings Technology,2007,201(16):7174-7179.
[12] Song Dan,Jiang Wei,Zhou Jidong,et al.Synthesis of monodisperse metal-coated polystyrene conductive microspheres with ultrasonic assisted[J].Jorunal of Materials Engineering,2008(11):63-67.
[13] Song Dan,Jiang Wei,Zhou Jidong,et al.Preparation and characterization of cross-linked PS micro-spheres supported Ni nanoparticles[J].Jorunal of Functional Materials,2008(2):346-348.
[14] Song Dan,Zhou J,Jiang W,et al.A novel activation for electroless plating on preparing Ni/PS microspheres[J].Materials Letters,2009,63(2):282-284.
[15] Hu Xiaoling,Liu Tian,Fang Gan,et al.Effect of activation pretreatment for electroless nickel plating on PS microspheres[J].Chemistry & Bioengineering,2015(2):67-70.
