Chinese Journal of Applied Chemistry

• Full Papers • Previous Articles     Next Articles

Preparation of Surface Chemical Modified Magnesium Hydroxide Nanoparticles via Azeotropic Distillation Method

LI Binjie1,2*, XU Xiangmin2, ZHANG Yudong2, DING Tao2   

  1. (1.Medical College;2.Engineering Technology Research Center of
    Flame Retardant Materials,University of Henan,Kaifeng 475004,China)
  • Received:2013-09-06 Revised:2013-12-17 Published:2014-08-10 Online:2014-08-10

Abstract: In conventional azeotropic distillation process, surface modifiers such as stearic acid(St), zinc stearate(ZnSt) and rare earth coupling agent(WOT) were firstly introduced to realize simultaneous drying and surface modification of Mg(OH)2 nanoparticles(NPs). The structure, morphologies and properties of surfacemodified Mg(OH)2 NPs were characterized by XRD, TEM, FT-IR, TG, CAM(contact angle measurement). The results indicate that surface modifiers not only react with the exterior hydroxyls of Mg(OH)2 NPs to form surface modified layer via chemical bond to weaken the possibility of hard agglomeration, but also change the surface character of Mg(OH)2 NPs from hydrophilicity to hydrophobicity. In addition, the surface modification mechanism in azeotropic distillation was also discussed. This study provides a novel surface modified route for other nanoparticles.

Key words: azeotropic distillation, surface modified, magnesium hydroxide, preparation

CLC Number: