物理化学学报 >> 2007, Vol. 23 >> Issue (05): 774-778.doi: 10.3866/PKU.WHXB20070530

研究简报 上一篇    下一篇

碱式碳酸铜微球的表面改性和组装

贺拥军; 余向阳; 赵小玲   

  1. 西安科技大学化学与化工系, 西安 710054; 西北大学化学系, 西安 710062
  • 收稿日期:2006-10-08 修回日期:2006-12-04 发布日期:2007-04-28
  • 通讯作者: 贺拥军 E-mail:yongjunhe@xust.edu.cn

Surface Modification and Assembly of Cu2(OH)2CO3 Microspheres

HE Yong-Jun; YU Xiang-Yang; ZHAO Xiao-Ling   

  1. Department of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, P. R. China; Department of Chemistry, Northwest University, Xi'an 710062, P. R. China
  • Received:2006-10-08 Revised:2006-12-04 Published:2007-04-28
  • Contact: HE Yong-Jun E-mail:yongjunhe@xust.edu.cn

摘要: 报道了通过分散聚合反应在碱式碳酸铜微球表面锚接聚苯乙烯纳米粒子, 以调节其亲水/亲油性的方法. 结果表明, 锚接的聚苯乙烯纳米粒子尺寸愈大, 所得的改性碱式碳酸铜微球疏水性愈强. 用对油和水润湿性适中的改性碱式碳酸铜微球为乳化剂, 能够制备出稳定的油包水型Pickering乳液. 改性碱式碳酸铜微球组装在Pickering乳液的分散相液滴表面, 形成一个固体壳层. 将Pickering 乳液的分散相水核凝胶化, 合成出分级结构琼脂糖凝胶微球.

关键词: 碱式碳酸铜, 聚苯乙烯, 纳米粒子, 表面改性, Pickering乳液

Abstract: To tune the surface wettability of Cu2(OH)2CO3 microspheres, polystyrene nanoparticles were attached to their surfaces via a dispersion polymerization. The products were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transmitting infrared spectrum (FT-IR). The immersion times of the modified Cu2(OH)2CO3 microspheres in a water-methanol mixed solution were measured. The results showed that with the increase of the size of the attached polystyrene nanoparticles, the hydrophobicity of the modified Cu2(OH)2CO3 microspheres was enhanced. Using polystyrene nanoparticle-attached Cu2(OH)2CO3 microspheres with intermediate hydrophilicity as emulsifiers, stable water-in-tricaprylin Pickering emulsions were produced. By gelling the water droplets of the Pickering emulsions, the hierarchical structures of polystyrene nanoparticle-modified Cu2(OH)2CO3 microspheres-armored agarose gel microspheres were obtained.

Key words: Cu2(OH)2CO3, Polystyrene, Nanoparticles, Surface modification, Pickering emulsions

MSC2000: 

  • O648