A kind of preparation method of sulfonated alginic acid modified biological polyester film
A bio-polyester, sulfonation technology, applied in chemical instruments and methods, membrane, membrane technology, etc., can solve problems such as unsatisfactory blood compatibility
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[0017] The technical solution of the present invention is described in detail below. The embodiment of the present invention is only for illustrating a specific structure, and the scale of the structure is not limited by the embodiment.
[0018] figure 1 It is a flow chart of the method of the present invention, and provides a schematic illustration of the preparation method provided by the present invention.
[0019] The first step: preparation of poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P(3,4HB)) microporous membrane.
[0020] Dissolve 5g of P(3,4HB) and 2g of PVP K-30 in 70ml of chloroform, let it stand for degassing, and apply a film on a glass plate with a 600μm frame-type film applicator. Shake and wash at room temperature for 24 hours (change the ethanol every 2 hours), take out the film, and rinse repeatedly with ethanol to completely extract the PVP K-30 porogen, and then dry the film in a vacuum oven at 50°C for 24 hours to obtain P(3,4HB) microporous membran...
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