摘要
Abstract
Bio-based polyolefin materials were derived from renewable biomass energy,which could be used as an effective substitute for traditional polyolefin materials,providing a feasible idea to solve the contradiction problem between the environment and the increasing demand for polyolefin products.In this paper,the biobase methyl 9-decenoate and ethylene were copolymerized successfully by the method of coordination polymerization.After exploring the process conditions,it was found that the non-postcene transition metal-MAO catalytic system was the best catalytic route for the reaction.When the temperature is 30 ℃,the ethylene pressure is 0.05 MPa,the reaction time is 30 min,the toluene solvent is 100 mL,the amount of Ni-N-Br is 5 μmol,the amount of methylalumoxane is 2 mL,and the concentration of bio-9-decenoate is 0.1 mol/L,the copolymer of ethylene/bio-9-decenoate is obtained.The melting temperature is 125.44℃,the crystallization temperature is 114.42 ℃,the average relative molecular weight is 2 630,and the molecular weight distribution is 1.6.The successful synthesis of ethylene/biobased methyl 9-decenoate copolymer was confirmed by infrared spectroscopy,hydrogen NMR spectroscopy and DSC,which provided a feasible path for the copolymerization of biobased polar monomer and ethylene,and also opened up a new route for the synthesis of biobased polyolefin materials.关键词
生物基9-癸烯酸甲酯/配位聚合/非茂后过渡金属催化剂/生物基极性单体Key words
bio-based methyl 9-decenoate/coordination polymerization/non-postcene transition metal catalyst/biobased polar monomer分类
化学工程
