Method for producing polymer thin film
A polymer film and manufacturing method technology, applied in the production of bulk chemicals, etc., can solve the problems of reducing the proportion of monomers, reducing the stability of emulsions, etc., and achieve the effects of low water absorption, labor and time reduction, and efficient manufacturing
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Embodiment 1
[0112] (1) Emulsion polymerization
[0113] In a 200mL detachable flask equipped with anchor stirring blades, add 67g of pure water as a solvent, 0.14g of sodium bicarbonate as a pH regulator, and 0.6g of surfactant sodium peptide (8mM relative to the reaction solution) as an emulsifier, and let it dissolve. In addition, 12 g of styrene was added, and the temperature of the reaction solution was raised to 70° C. in a water bath, then the gas phase in the detachable flask was replaced with nitrogen, and 0.2 g of potassium persulfate dissolved in 5 g of pure water was added as a polymerization initiator. And polymerization was performed for 12 hours, stirring the reaction liquid of the composition shown in Table 1 at 240 rpm. Simultaneously, 12 g of styrene was added three times at intervals of 1.5 hours so that the concentration of styrene with respect to the reaction liquid was 40% by mass.
[0114] [Table 1]
[0115]
[0116] (2) thin film
[0117] The reaction liquid ...
Embodiment 2
[0130] In a 200 mL detachable flask equipped with an anchor stirring blade, add 79 g of pure water as a solvent, 0.1 g of sodium bicarbonate as a pH regulator, and 0.1 g of surfactant sodium (1.2 mM relative to the reaction solution) as an emulsifier , and let it dissolve. And add n-butyl methacrylate 36g (relative to the reaction solution is 30% by mass), and the temperature of the reaction solution is raised to 70°C in a water bath, then replace the gas phase in the detachable flask with nitrogen, add the solution dissolved in pure water 0.15 g of potassium persulfate in 5 g was used as a polymerization initiator, and polymerization was performed for 12 hours while stirring at 240 rpm.
[0131] [table 3]
[0132]
[0133] The resulting reaction solution was dried at 80° C. in an oven to obtain a powder. About 0.1 g of the obtained powder was melt-pressed at 90° C. and 6 MPa for 10 minutes to produce a poly-n-butyl methacrylate film having a thickness of about 200 μm.
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