Initiator for alkene monomer polymerization reaction
An olefin monomer, bulk polymerization technology, applied in the field of compounds, can solve problems such as explosion, achieve the effects of simple synthesis method, expansion of polymerization initiator system, safe use and storage
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Embodiment 1
[0022] Add 1g of methyl methacrylate monomer, 0.0222g of initiator A and 2ml of toluene solvent into the polymerization tube, mix well and then seal it well. Under liquid nitrogen freezing or low temperature conditions, vacuumize and nitrogen-fill repeatedly 5 times. The polymerization tube was placed in an oil bath at 80°C for 10 hours of reaction, and then the polymerization tube was taken out, and the reaction was terminated at low temperature. Then use petroleum ether or methanol / water=1:1 solvent to precipitate the polymer, and dry it in a vacuum oven at 50°C to a constant weight. The conversion rate is 32.01%, and the number average molecular weight (M n )=90714, molecular weight distribution width (PDI)=1.74. However, the blank group without initiator A under the same conditions did not polymerize at all.
Embodiment 2
[0024] Add 1g of methyl methacrylate monomer, 0.0222g of initiator A and 2ml of toluene solvent into the polymerization tube, mix well and then seal it well. Under liquid nitrogen freezing or low temperature conditions, vacuumize and nitrogen-fill repeatedly 5 times. The polymerization tube was placed in an oil bath at 85° C. for 10 h, and then the polymerization tube was taken out, and the reaction was terminated at low temperature. Then use petroleum ether or methanol / water=1:1 solvent to precipitate the polymer, and dry it in a vacuum oven at 50°C to a constant weight. The conversion rate is 52.44%, and the number average molecular weight (M n )=91531, molecular weight distribution width (PDI)=1.77. And under the same conditions, although the blank group without initiator A slightly polymerized, the amount of polymerization was very small.
Embodiment 3
[0026] Add about 1.04g of styrene monomer and 0.0222g of initiator A into the polymerization tube, mix well and then seal it well. Under the condition of freezing with liquid nitrogen or low temperature, vacuumize and fill with nitrogen for 5 times. The polymerization tube was placed in an oil bath at 120°C for 3 hours to react, then the polymerization tube was taken out, and the reaction was terminated at low temperature. Then use petroleum ether or methanol / water=1:1 solvent to precipitate the polymer, and dry it in a vacuum oven at 50°C to a constant weight. The conversion rate is 52.20%, and the polymer M n =153042, PDI=1.78.
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