Biodegradable polymer, production method thereof, molded product thereof, and use thereof
一种生物降解性、制造方法的技术，应用在水崩解型生物降解性聚合物领域，能够解决很难预测或定论水崩解性、没有公开水崩解性和生物降解性等问题，达到优异生物降解性、优异水崩解性、触感良好的效果
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[0245] Hereinafter, the present invention will be explained more specifically based on examples, but the present invention is not limited thereto. Here, the evaluation methods in the following Examples are as follows.
[0246] [1] Molecular weight of polymer
[0247] The molecular weight of the polymer was determined by gel permeation chromatography (hereinafter referred to as "GPC"). The standard material uses polystyrene.
[0248] [2] Tensile strength and tensile elasticity of the film
[0249] A tensile tester was used to stretch and punch a dumbbell-shaped film test piece at a tensile speed of 50 mm / min, and the tensile strength at break and the tensile modulus of elasticity were determined by measuring the stress.
[0250] [3] Water solubility test
[0251] The film was immersed in distilled water at 35° C. for 24 hours, the taken-out film was dried, and the weight of the film was measured, thereby performing a water solubility test of the film. When the weight retention rate...
manufacture example 1
[0265] Into a 300mL detachable flask equipped with a Dean-Stark device with a condenser, a thermometer, a glass stirring blade, and a dropping funnel, 13.4g of terephthalaldehyde (0.1mol, manufactured by Aldrich Corporation) , Purity 99.0%) and 120 mL of toluene, stirred with a glass stirring blade, and cooled to 3~5°C in ice water. 12.2 g of 2-ethanolamine (0.2 mol, manufactured by Wako Pure Chemical Industries, Ltd., purity 99.0%) was added to the dropping funnel, and it was dropped into the flask over 30 minutes. After the dropwise addition, it is heated in an oil bath and heated to reflux until the formation of by-product water is completed. After cooling to room temperature, the precipitate was separated by filtration, and washed on the filter with 120 mL of toluene. The obtained crystals were dried overnight at 50°C under a nitrogen atmosphere to obtain 21.2 g of N,N'-(1,4-phenylenedimethylene)bis(ethanolamine) (hereinafter referred to as a pale yellow solid) "Imine Compound...
manufacture example 2
[0268] Instead of 2-ethanolamine, 21.46g of 2-(2-aminoethoxy)ethanol (0.2mol, manufactured by Tokyo Chemical Industry Co., Ltd., purity 98.0%) was used, and dried under reduced pressure at room temperature for 3 days. Example 1 was subjected to the same reaction operation to obtain 28.3 g of N,N'-(1,4-phenylenedimethylene)bis(2-(2-aminoethoxy)ethanol) (below Referred to as "imine compound 2"). The proton nuclear magnetic resonance spectrum measured by dissolving imine compound 2 in deuterated DMSO ( 1 H-NMR spectrum) was assigned as follows, and the formation of imine compound 2 was confirmed.
[0269] 1 H-NMR spectrum: δH4.58(t, 2H), δH3.44(m, 8H), 3.68(m, 8H), δH8.37(s, 2H), δH7.79(s, 4H)
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Abstract
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