A biodegradable rare earth fluorescent film based on polyhydroxybutyrate and its preparation method and application
A polyhydroxybutyrate, rare earth fluorescence technology, applied in chemical instruments and methods, luminescent materials, plant protection covers, etc., can solve the problems of poor light energy conversion efficiency, unsustainability, non-degradability, etc., and achieve thermal stability. Good performance, solve unsustainability, low cost effect
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example 1
[0033] The biodegradable rare earth fluorescent film using polyhydroxybutyrate as a matrix is prepared by the following method:
[0034] 1) Accurately weigh 0.0025 g of Eu(TTA) 2 TPY-OCH 3 Add it to the beaker, then measure 3mL of THF and add it to the beaker, stir at room temperature until Eu(TTA) 2 TPY-OCH 3 Completely dissolved to form Eu(TTA) with a mass fraction of 0.094% 2 TPY-OCH 3 Clear solution, spare;
[0035] 2) Weigh 0.2496 g of PHB into the beaker, then measure 50 mL of dichloromethane into the beaker, stir at room temperature until PHB is completely dissolved, and form a PHB solution with a mass fraction of 0.375% for later use;
[0036] 3) Pour the above two solutions into the reaction bottle and stir at room temperature to obtain a transparent mixed solution;
[0037] 4) Drop the above mixed solution into an evaporating dish with a dropper, cover the surface with a perforated plastic wrap, and let the solution evaporate at room temperature for 8 hours. ...
example 2
[0040] The biodegradable rare earth fluorescent film using polyhydroxybutyrate as a matrix is prepared by the following method:
[0041] 1) Accurately weigh 0.0125 g of Eu(TTA) 2 TPY-OCH 3 Add it to the beaker, then measure 4mL of THF and add it to the beaker, stir at room temperature until Eu(TTA) 2 TPY-OCH 3 Completely dissolved to form Eu(TTA) with a mass fraction of 0.351% 2 TPY-OCH 3 Clear solution, spare;
[0042]2) Weigh 0.2529 g of PHB into the beaker, then measure 50 mL of dichloromethane into the beaker, stir at room temperature until PHB is completely dissolved, and form a PHB solution with a mass fraction of 0.380% for later use;
[0043] 3) Pour the above two solutions into the reaction bottle and stir at room temperature to obtain a transparent mixed solution;
[0044] 4) Drop the above mixed solution into an evaporating dish with a dropper, cover the surface with a perforated plastic wrap, and let the solution evaporate at room temperature for 18 hours. ...
example 3
[0047] The biodegradable rare earth fluorescent film using polyhydroxybutyrate as a matrix is prepared by the following method:
[0048] 1) Accurately weigh 0.0172g of Eu(TTA) 2 TPY-OCH 3 Add it to the beaker, then measure 5mL of THF and add it to the beaker, stir at room temperature until Eu(TTA) 2 TPY-OCH 3 Completely dissolved to form Eu(TTA) with a mass fraction of 0.386% 2 TPY-OCH 3 Clear solution, spare;
[0049] 2) Weigh 0.2532 g of PHB into the beaker, then measure 50 mL of dichloromethane into the beaker, stir at room temperature until PHB is completely dissolved, and form a PHB solution with a mass fraction of 0.380% for later use;
[0050] 3) Pour the above two solutions into the reaction bottle and stir at room temperature to obtain a transparent mixed solution;
[0051] 4) Drop the above mixed solution into an evaporating dish with a dropper, cover the surface with a perforated plastic wrap, and let the solution evaporate at room temperature for 24 hours. ...
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