Nano composite material and prepared the method for this nano composite material by nanoprecipitation

Nano composite material and prepared the method for this nano composite material by nanoprecipitation

  • CN 102,245,682 B
  • Filed: 10/07/2009
  • Issued: 03/16/2016
  • Est. Priority Date: 10/07/2008
  • Status: Active Grant
First Claim
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1. preparation is encapsulated with the method for the polymkeric substance subparticle of nano particle, and described particle is obtained by nanoprecipitation;

  • The method comprises;

    A) dispersing nanoparticles in the first solvent, described solvent is the non-solvent of described polymkeric substance;

    B) described polymkeric substance is dissolved in the second solvent;

    AndC) by carrying out induced nano precipitation to injection of polymer solution in nanoparticle dispersion;

    It is characterized in that;

    Described first and second solvents are miscible at least partly;

    When the first solvent and the second solvent, the volume of described second solvent is 1 to 80% of cumulative volume;

    The concentration of described polymkeric substance is 0.001 to 10 quality %;

    Described polymkeric substance is insoluble to the mixture of the first and second solvents of final ratio;

    Described polymkeric substance is selected from vinyl polymer, polycarbonate, polyester, polymeric amide, polyetherketone, polyethersulfone, polyethers, poly phosphate, Polythiophene and their derivative, or their thermoplastic polymer of copolymer derivative a kind of;

    AndThe pH of described nanoparticle dispersion changes between 7.0 to 14.0.

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