Fluorescent composite fiber as well as preparation method and application thereof
A composite fiber and fluorescence technology, which is applied in the fields of material synthesis chemistry and clinical medicine, can solve the problems of difficulty in fast and accurate penetration, inability to accurately intubate operation, complicated structure of ophthalmic light-emitting trocars, etc., and achieve high clinical application prospects. , good biocompatibility, and the effect of large-scale production
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Embodiment 1
[0088] This embodiment provides a fluorescent composite fiber, the fluorescent composite fiber has a core-shell structure, and the fluorescent composite fiber with the core-shell structure is prepared by melt spinning, and the preparation method includes the following steps:
[0089] (1) Dissolve 10mg of InP@ZnS quantum dots and 10g of polycaprolactone in 8mL of chloroform solution, stir into a viscous solution, concentrate under reduced pressure at 133Pa, 50°C, remove the solution and air bubbles; then use a crushing machine to crack it into a size of 2cm The scraps were then placed in a vacuum drying oven, and dried at 133Pa and 50°C for 24 hours to remove solvent and moisture, and obtain a polymer doped with fluorescent materials;
[0090] (2) Add the polymer doped with fluorescent material obtained in step (1) into the melt-spinning single-screw extruder at a feed rate of 20 g / min, set the parameters to 500 rpm, and set the temperature to 100° C.; 2mm, a steel pipe with a ...
Embodiment 2
[0094] This embodiment provides a fluorescent composite fiber, the fluorescent composite fiber has a core-shell structure, and the fluorescent composite fiber with the core-shell structure is prepared by melt spinning, and the preparation method includes the following steps:
[0095] (1) Dissolve 10mg of InP@ZnS quantum dots and 10g of polylactic acid in 8mL of chloroform solution, stir to form a viscous solution, concentrate under reduced pressure at 133Pa, 50°C, remove the solution and air bubbles; The material was then placed in a vacuum drying oven, dried at 133Pa and 55°C for 23.5 hours to remove solvent and moisture, and obtain a polymer doped with a fluorescent material;
[0096] (2) 2g polylactic acid and the polymer doped with fluorescent material that step (1) obtains are respectively placed in two feed ports of the melt spinning machine, and the feed rate is 20g / min, and the parameters are set to 180rpm, The temperature is set at 200°C; the primary fiber is obtained...
Embodiment 3
[0099] This embodiment provides a fluorescent composite fiber, the fluorescent composite fiber has a core-shell structure, and the fluorescent composite fiber with a skin-core structure (the skin-core structure is a special core-shell structure) is prepared by melt spinning, and the preparation method includes the following step:
[0100] (1) Dissolve 2 mg of Nile Red and 10 g of polylactic acid-glycolic acid in 8 mL of chloroform solution, stir to form a viscous solution, concentrate under reduced pressure at 133 Pa and 50 ° C, remove the solution and air bubbles; then use a crushing machine to crack into 2 cm-sized The crushed material is then placed in a vacuum drying oven, dried at 133Pa and 50°C for 24 hours to remove solvent and moisture, and obtain a polymer doped with a fluorescent material;
[0101] (2) Add the polymer doped with fluorescent material obtained in step (1) into the melt-spinning twin-screw extruder at a feed rate of 10 g / min, set the parameters to 300 r...
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