生物基9-癸烯酸甲酯/乙烯共聚物的制备  

Preparation of Bio-based Methyl 9-Decenoate/Ethylene Copolymer

作　　者：程键 李世文 李倩[1] 马占芳[2] 李化毅[1] CHENG Jian;LI Shiwen;LI Qian;MA Zhanfang;LI Huayi(Institute of Chemistry,Chinese Academy of Sciences,Beijing 100080,China;Department of Chemistry,Capital Normal University,Beijing 100048,China;School of Materials Science and Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China)

机构地区：[1]中国科学院化学研究所,北京100080 [2]首都师范大学化学系,北京100048 [3]江苏科技大学材料科学与工程学院,江苏镇江212100

出　　处：《生物质化学工程》2025年第2期48-52,共5页Biomass Chemical Engineering

摘　　要：生物基9-癸烯酸甲酯是生物基油酸甲酯与乙烯的交叉复分解产物,乙烯与9-癸烯酸甲酯的共聚反应可能会开辟新的生物基聚烯烃合成路线。本研究采用配位聚合的方法,成功将生物基9-癸烯酸甲酯与乙烯进行共聚,经过工艺条件探索,得到非茂后过渡金属催化剂(Ni-N-Br)-甲基铝氧烷(MAO)催化体系是适合该反应的最佳催化路线;温度30℃、乙烯压力0.05 MPa、反应时间30 min、甲苯溶剂100 mL、Ni-N-Br用量5μmol、MAO用量2 mL和生物基9-癸烯酸甲酯浓度0.1 mol/L时,得到的生物基9-癸烯酸甲酯/乙烯共聚物,其熔融温度125.44℃、产率1.02 g、结晶温度114.42℃、重均相对分子质量(M_(w))2.63×10^(4)、相对分子质量分布1.6。通过红外光谱、核磁共振氢谱、DSC等证实了生物基9-癸烯酸甲酯/乙烯共聚物成功合成,为生物基极性单体与乙烯共聚提供了可行性路径。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 5μmol,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 2630,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 

分 类 号：TQ35[化学工程]