Preparation method of conductive polypyrrole hollow compound microsphere sensitive to temperature
A technology of composite microspheres and polypyrrole, which is applied in the field of materials, can solve the problems of limited practical application, limited adjustable range of temperature or pH change, single structure and shape of composite polypyrrole materials, etc., and achieves significant volume swelling effect and sensitivity Adjustable, easy-to-synthesize effects
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Embodiment 1
[0026] 1. Preparation of poly(N-isopropylacrylamide-styrene) copolymer microsphere dispersion
[0027] Under the protection of nitrogen, dissolve 0.2g of N-isopropylacrylamide monomer and 1.8g of styrene monomer in a 150mL three-neck flask filled with 90g of double-distilled water, stir at 400 rpm, and heat to 70°C in a water bath. Add 10.16g of potassium persulfate aqueous solution with a mass fraction of 1.57%, the mass ratio of N-isopropylacrylamide monomer to styrene monomer, double distilled water, and potassium persulfate aqueous solution is 1:9:450:50.8, and the temperature is constant After reacting for 8 hours, 102.16 g of poly(N-isopropylacrylamide-styrene) copolymerized microsphere dispersion liquid was prepared.
[0028] 2. Preparation of poly(N-isopropylacrylamide-styrene) / poly(N-isopropylacrylamide-methacrylic acid) core-shell composite microspheres
[0029]Under nitrogen protection, 0.96g N-isopropylacrylamide monomer, 0.23g methacrylic acid monomer, 0.094g sod...
Embodiment 2
[0036] In step 3 of preparing polypyrrole composite microspheres in this example, the pyrrole ethanol solution with a mass fraction of 1.8% was replaced with an equal mass fraction of 0.6% pyrrole ethanol solution, and other steps in this step were the same as in Example 1. The other steps were the same as in Example 1 to prepare polypyrrole hollow composite microspheres. The scanning electron micrographs of the prepared polypyrrole hollow composite microspheres are shown in figure 2 . Depend on figure 2 It can be seen that the prepared polypyrrole hollow composite microspheres have a red blood cell-like structure.
Embodiment 3
[0038] In step 3 of preparing polypyrrole composite microspheres in this embodiment, the pyrrole ethanol solution with a mass fraction of 1.8% was replaced with an equal mass fraction of 1.2% pyrrole ethanol solution, and other steps in this step were the same as in Example 1. The other steps were the same as in Example 1 to prepare polypyrrole hollow composite microspheres. The scanning electron micrographs of the prepared polypyrrole hollow composite microspheres are shown in image 3 . Depend on image 3 It can be seen that the prepared polypyrrole hollow composite microspheres have a red blood cell-like structure.
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