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Bioresorbable porous film

  • US 9,107,979 B2
  • Filed: 04/25/2013
  • Issued: 08/18/2015
  • Est. Priority Date: 12/06/2012
  • Status: Active Grant
First Claim
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1. A bioresorbable porous film, comprising:

  • a blend mixture of polylactic acid and at least two kinds of polyethylene glycol;

    wherein the at least two kinds of polyethylene glycol comprise a first polyethylene glycol, which is in a solid form under ambient temperature and atmospheric pressure, and a second polyethylene glycol, which is in a liquid form under ambient temperature and atmospheric pressure;

    wherein the first polyethylene glycol has a molecular weight in a range of 6000-9000 Da (PEG(6000-9000)), and the second polyethylene glycol has a molecular weight in a range of 300-600 Da (PEG(300-600));

    wherein the film is prepared by a blend mixture according to weight ratio of Formula (I),
    x/y/z
    x+y+z=100%, x=30-70%, y+z=70-30%, 



    (I)wherein x, y, and z represent the weight percentages of PLA, PEG(6000-9000), and PEG(300-600), respectively; and

    wherein the film has a porosity of 58.40%-90.80%.

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