Copolymerization of ethylene with norbornene or 1-octene using supported ionic liquid systems

被引：7
作者：
Ochedzan-Siodlak, Wioletta [1 ]
Bihun, Anna [1 ]
机构：
[1] Univ Opole, Fac Chem, Oleska 48, PL-45052 Opole, Poland
来源：
POLYMER BULLETIN | 2017年 / 74卷 / 07期
关键词：
Copolymerization; Ionic liquid; Silica; Vanadium catalyst; Polyolefins; METALLOCENE CATALYSTS; VANADIUM(V) COMPLEXES; MOLECULAR-STRUCTURE; POST-METALLOCENES; ETHENE-NORBORNENE; CYCLIC OLEFINS; ZIEGLER-NATTA; POLYMERIZATION; BEHAVIOR; LIGANDS;
D O I：
10.1007/s00289-016-1866-1
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Copolymerization of ethylene with norbornene (E/NB) and ethylene with 1-octene (E/Oct) is performed using supported ionic liquid (SIL) systems, in which metallocene (Cp2VCl2) or post-metallocene [VCl2(salenCl(2))] vanadium catalysts are immobilized in pyridinium chloroaluminate ionic liquid supported on silica. The studied SIL catalysts show higher activities as well as stability than their non-supported analogues. In addition, higher activities and better comonomer incorporation are observed for norbornene (above 30 mol%). The comonomer incorporation has considerable influence on copolymer molecular weight (M-w), melting temperature, crystallinity degree, and microstructure of the copolymers. Molecular-weight distribution is relatively narrow (1.5 <= M-w/M-n <= 3.0), which indicates the presence of single-site catalyst systems.
引用
收藏
页码：2799 / 2817
页数：19
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