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Nanosilver Coated Bacterial Cellulose

  • US 20090220560A1
  • Filed: 04/24/2007
  • Published: 09/03/2009
  • Est. Priority Date: 04/24/2006
  • Status: Active Grant
First Claim
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1. A method of producing nano-silver coated cellulose fibers, comprising:

  • a) preparing a suspension of cellulose fibers at a pre-selected concentration;

    b) exposing the cellulose fibers to an oxidizing agent for oxidizing the cellulose fibers to form dialdehyde cellulose fibers;

    c) incorporating a functional group into a backbone of the dialdehyde cellulose fibers to produce functionalized cellulose fibers, the functional group being selected from the group consisting of thio-, aldehyde, ketone and carboxylic acid;

    d) exposing the functionalized cellulose fibers to an aqueous solution containing a first silver compound such that nano-silver particles are formed and bound to the cellulose backbone of the functionalized cellulose fibers; and

    e) exposing the functionalized cellulose fibers with nano-silver particles bound thereto to a solution containing a second silver compound for growing the nano-silver particles to a pre-selected size.

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