A kind of polyglycolic acid-polycaprolactone film and its preparation method and use
A polyglycolic acid and polycaprolactone technology, which is used in medical science, surgery, etc., can solve the problems of long duration of mechanical strength, slow decomposition speed, slow degradation speed, etc., and achieve shortened retention time, fast degradation speed and molecular weight. Moderate effect
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[0022] The present invention also includes the preparation method of polyglycolic acid-polycaprolactone film, comprises the following steps:
[0023] ① Pulverize 5 to 15 parts of polyglycolic acid with a molecular weight of 9 to 110,000 in a low-temperature ultrafine pulverizer to obtain polyglycolic acid particles with an average particle size of 10 to 200 μm;
[0024] ② Pulverize 85-95 parts of polycaprolactone with a molecular weight of 100,000-200,000 in a low-temperature ultrafine pulverizer to obtain polycaprolactone particles with an average particle size of 10-200 μm;
[0025] ③ The polyglycolic acid particles obtained in step ① and the polycaprolactone particles obtained in step ② are uniformly mixed to obtain mixed particles, and then the mixed particles are molded into a film with a thickness of 10-200 μm under a vacuum molding machine at 60-100 ° C.
[0026] Preferably, the temperature of the low-temperature ultrafine pulverizer is -40 to -80°C.
[0027] Preferabl...
Embodiment 1
[0032] A polyglycolic acid-polycaprolactone film, consisting of 5g of polyglycolic acid and 85g of polycaprolactone; the polyglycolic acid is a particle with an average particle diameter of 10 μm, and the molecular weight of the polyglycolic acid is 90,000 , the molecular weight of the polycaprolactone is 100,000, and the thickness of the polyglycolic acid-polycaprolactone film is 10 μm.
Embodiment 2
[0034] A polyglycolic acid-polycaprolactone film, consisting of 15g polyglycolic acid and 95g polycaprolactone; the polyglycolic acid is a particle with an average particle diameter of 200 μm, and the molecular weight of the polyglycolic acid is 110,000 , the molecular weight of the polycaprolactone is 200,000, and the thickness of the polyglycolic acid-polycaprolactone film is 200 μm.
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