A kind of preparation method of amphiphilic particles
An amphiphilic and granule technology, applied in the field of preparation of amphiphilic granules, can solve problems such as complex preparation routes, universality of toxic and harmful organic solvents, uncontrollable particle size, etc.
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Embodiment 1
[0041] 本实施例所述双亲性颗粒制备方法,包括以下步骤:
[0042] (1)称取0.1500g聚苯乙烯,溶于2mL N,N-二甲基甲酰胺和2mL四氢呋喃混合溶液中,室温下磁力搅拌4h,得到浓度为0.0375g / mL的聚苯乙烯溶液;
[0043] (2)将步骤(1)得到的聚苯乙烯溶液吸入5mL的玻璃注射器中,将玻璃注射器固定在注射泵上,将注射器的针头连接高压电源的正极;将铜板作为接收器,并连接高压电源的负极,打开电源,进行静电纺丝(见 figure 1 ),得到具有串珠结构的超疏水高粘附基底( figure 2 ),所述静电纺丝过程的参数如下:流速为0.8mL / h,高压电源的电压为8.00kV,收集距离为7cm,收集时间为20min。润湿性结果显示所得基底接触角为154°,具有超疏水性( image 3 );且水滴可倒挂在基底,表明这种表面对水具有很强的粘附力,经过测量粘附力大小为71μN,如 Figure 4 with Figure 5 shown.
[0044] (3) Take by weighing 0.1g chitosan, be dissolved in 5mL water, be mixed with the chitosan solution that concentration is 0.0200g / mL;
[0045] (4) if Image 6 As shown, add 50 μL of glutaraldehyde with a mass concentration of 10% into 1 mL of chitosan solution, stir rapidly, and mix evenly to obtain a mixed solution. Use a pipette to pipette 14 μL of the mixed solution and add it dropwise to the chitosan solution prepared in step (2). On the super-hydrophobic high-adhesion substrate, after standing at room temperature for 40 minu...
Embodiment 2
[0047] The method for preparing amphiphilic particles described in this embodiment comprises the following steps:
[0048] (1) Weigh 0.1000g polystyrene, dissolve in 2.6mL N,N-dimethylformamide and 1.4mL tetrahydrofuran mixed solution, stir magnetically at room temperature for 3h, and obtain a polystyrene solution with a concentration of 0.0250g / mL ;
[0049] (2) Inhale the polystyrene solution obtained in step (1) into a 5mL glass syringe, fix the glass syringe on the syringe pump, connect the needle of the syringe to the positive pole of the high-voltage power supply; use the iron plate as a receiver, and connect the high-voltage The negative electrode of the power supply, turn on the power supply, and perform electrospinning to obtain a superhydrophobic high-adhesion substrate with a beaded structure. The parameters of the electrospinning process are as follows: the flow rate is 0.3mL / h, and the voltage of the high-voltage power supply is 8.00kV. The distance is 4cm, and t...
Embodiment 3
[0053] The method for preparing amphiphilic particles described in this embodiment comprises the following steps:
[0054] (1) Weigh 0.4000g polystyrene, dissolve in 1.4mL N,N-dimethylformamide and 2.6mL tetrahydrofuran mixed solution, stir magnetically at room temperature for 5h, and obtain a polystyrene solution with a concentration of 0.1000g / mL ;
[0055] (2) Inhale the polystyrene solution obtained in step (1) into a 5mL glass syringe, fix the glass syringe on the syringe pump, connect the needle of the syringe to the positive pole of the high-voltage power supply; use the aluminum plate as a receiver, and connect it to the high-voltage power supply Negative pole of the negative electrode, turn on the power supply, carry out electrospinning, obtain the superhydrophobic high-adhesion substrate with beaded structure, the parameter of described electrospinning process is as follows: flow rate is 1.5mL / h, the voltage of high voltage power supply is 15.00kV, collection distanc...
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