Solar seawater desalination material based on natural plant stems as well as preparation method and application of solar seawater desalination material
A technology of natural plants and seawater, applied in chemical instruments and methods, seawater treatment, general water supply conservation, etc., can solve problems such as hydrogel and wood being easily fouled by marine organisms, evaporating water quality bacteria contamination, and reducing service life. , to achieve the effect of increasing anti-biofouling performance, excellent antibacterial and anti-mildew performance, improving durability and service life
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Embodiment 1
[0073] The preparation method of modified sunflower rod pith comprises the following steps:
[0074] (1) Gently peel off the sunflower stalks (purchased from Liaoning, China) to leave the pith and cut them into discs with a height of 10 mm, then lightly polish the cross-section with sandpaper until it is smooth and flat, and take four discs , the area is 11.1368mm measured by Adobe Photoshop pixel statistical counting method after taking pictures 2 ;
[0075] (2) Preparation of zwitterionic hydrogel prepolymerization solution: 2g DMAPS, 8g deionized water, 40mg PEGDMA, 20mg ammonium persulfate, and 20mg tetramethylethylenediamine were mixed to prepare zwitterionic hydrogel prepolymerization solution;
[0076] (3) Put the sunflower stem pith obtained in step (1) in the zwitterionic hydrogel prepolymerization solution of step (2) for ultrasonic dispersion for 2 minutes, then take out the pith, place it in a 40°C oven for thermal polymerization for 20 minutes, and then take out ...
Embodiment 2
[0094] The preparation method of modified sunflower rod pith comprises the following steps:
[0095] (1) The sunflower stalks (purchased from Liaoning, China) were peeled off the shell and the pith was cut into discs with a thickness of 5 mm and a diameter of 2 cm, and then polished the cross-section with sandpaper until it was smooth and flat, and four discs were taken , the area is 11.2552mm measured by camera pixel counting method 2 ;
[0096] (2) Preparation of zwitterionic hydrogel prepolymerization solution: 1g DMAPS, 9g deionized water, 20mg PEGDMA, 20mg ammonium persulfate, and 30mg tetramethylethylenediamine were mixed successively to prepare zwitterionic hydrogel prepolymerization solution ;
[0097] (3) Put the sunflower pith obtained in step (1) in the zwitterionic hydrogel pre-polymerization solution of step (2) for ultrasonic dispersion for 2 minutes, then take out the pith, place it in a 40°C oven for thermal polymerization for 20 minutes, and then take out th...
Embodiment 3
[0100] The preparation method of modified sunflower rod pith comprises the following steps:
[0101] (1) Peel off the sunflower stalks (purchased from Liaoning, China) to leave the pith and cut them into discs with a diameter of 7mm with a blade, then polish the cross-section with sandpaper until it is smooth and flat, take four discs, and count them with the camera pixels The area measured by the method is 11.3883mm 2 ;
[0102] (2) Preparation of zwitterionic hydrogel prepolymerization solution: 5g DMAPS, 5g deionized water, 20mg PEGDMA, 75mg ammonium persulfate, and 70mg tetramethylethylenediamine were mixed successively to prepare zwitterionic hydrogel prepolymerization solution ;
[0103] (3) Put the sunflower pith obtained in step (1) in the zwitterionic hydrogel pre-polymerization solution of step (2) for ultrasonic dispersion for 2 minutes, then take out the pith, place it in a 40°C oven for thermal polymerization for 20 minutes, and then take out the pith Soak it i...
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