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With the development and application of new technologies , the sudden emergence of a variety of polymer materials , has been widely used in the area of people's lives , even though they have many advantages , but most of the use of waste to the environment a huge pollution green light degradable polymers by the society of all ages . This study polyketones by the palladium catalyst system as a catalyst , anhydrous methanol as a solvent , by the CO and C2H4 linear alternating copolymerization of the resulting polymer material , not only has a high melting point, heat resistance , abrasion resistance, chemical resistance good mechanical properties, excellent physical properties such as gas barrier properties , and polyketone molecule in the presence of a large number of carbonyl groups , it has excellent light degradable . Polyketone the main raw material for a wide range of sources of CO , concentration up to 90% of carbon monoxide yellow phosphorus tail yellow phosphorus production process as a raw material , which saves cost and resource utilization of exhaust gas . With anhydrous methanol as a solvent , Pd (AcO) 2DPPP as catalytic precursor , concentrated sulfuric acid as a cocatalyst, and p-benzoquinone as the oxidant, the catalyzed copolymerization reaction of carbon monoxide and ethylene , obtained polyketone molecular weight of 24,944 , m.p. 256 ° C . This article focuses on the reaction catalytic activity of the catalyst system composition the (phosphorus bidentate ligand , strong acids , oxidizing agents ) in an amount and copolymerization reaction conditions ( the copolymerization reaction temperature, pressure and stirring speed , etc.) , and explore the solution polymerization reaction law. Suitable catalytic system composed : DPPP: Pd = 1.5:1, H2SO4: Pd = 100, and p-benzoquinone : Pd = 60 . Polymerization process conditions : agitation speed of 400r/min, palladium catalyst concentration was 0.1 mmol / L, the reaction temperature was 95 ° C , the reaction pressure was 4.0MPa , CO: C2H4 in = 1:1 . This paper the palladium catalyzed CO/C2H4 copolymerizable mechanism a detailed discussion and analysis, combined with the chemical reaction process in a concentration method , the introduction of the generating function , and the data obtained in this experiment , the establishment of Pd (AcO ) 2DPPP catalytic system under CO and ethylene copolymerization reaction mathematical model, investigated palladium-catalyzed polymerization reaction conversion rate and the degree of polymerization of the polyketone , the model through the model calculations and experimental values ??of the model test , the error does not exceed 5% , indicating that the kinetic model can be better reaction CO / ethylene response process.
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