Influence of Branching on the Thermal and Crystallization Behavior of Bimodal Polyethylenes Synthesized with Binary Late-Transition-Metal Catalyst Combinations
文献类型：期刊论文
| 作者 | Long YY ; Liu SR ; Cui L ; Li YS |
| 刊名 | journal of applied polymer science
 |
| 出版日期 | 2010 |
| 卷号 | 115期号:5页码:3045-3055 |
| 关键词 | LOW-DENSITY POLYETHYLENE COMBINED METALLOCENE CATALYSTS HDPE/LLDPE REACTOR BLENDS X-RAY-SCATTERING MOLECULAR-WEIGHT ETHYLENE POLYMERIZATION MECHANICAL-PROPERTIES ALPHA-OLEFINS COPOLYMERIZATION MICROSTRUCTURES |
| ISSN号 | 0021-8995 |
| 通讯作者 | li ys |
| 中文摘要 | two reactor blends of linear and branched polyethylene resins with bimodal molecular weight distributions were synthesized in a one-reactor polymerization process through the combination of 2,6-bis[1-(2,6-dimethyphenylimino)pyridyl]cobalt dichloride (1) and 2,3-bis(2,6-diisopropylphenyl)butanediimine nickel dibromide (2) or 1,2-bis(2,6-diisopropylphenyl)cyclohexene diimine nickel dibromide (3) in the presence of modified methylaluminoxane. the linear correlation between the catalyst activity and concentration of the nickel compounds suggested that the catalysts performed independently of one another. the molecular weights, molecular weight distributions, and crystalline and phase structures of the blends were investigated with a combination of high-temperature get permeation chromatography, differential scanning calorimetry, wide-angle x-ray diffraction, and small-angle x-ray scattering techniques. the branching degree of the polyethylene produced with 3 was much higher than the branching degree of the sample produced with 2, although their molecular weights were relatively close. in addition, the crystallization rate, melting temperature, degree of crystallinity, and crystallization temperature of more highly branched blends produced with 1/3 were lower. the long periods and thickness of the crystalline region were greatly influenced by the addition of highly branched polyethylene. (c) 2009 wiley periodicals, inc. j appl polym sci 115: 3045-3055, 2010 |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000274114000064 |
| 公开日期 | 2012-06-07 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/43932]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Long YY,Liu SR,Cui L,et al. Influence of Branching on the Thermal and Crystallization Behavior of Bimodal Polyethylenes Synthesized with Binary Late-Transition-Metal Catalyst Combinations[J]. journal of applied polymer science,2010,115(5):3045-3055. |
| APA | Long YY,Liu SR,Cui L,&Li YS.(2010).Influence of Branching on the Thermal and Crystallization Behavior of Bimodal Polyethylenes Synthesized with Binary Late-Transition-Metal Catalyst Combinations.journal of applied polymer science,115(5),3045-3055. |
| MLA | Long YY,et al."Influence of Branching on the Thermal and Crystallization Behavior of Bimodal Polyethylenes Synthesized with Binary Late-Transition-Metal Catalyst Combinations".journal of applied polymer science 115.5(2010):3045-3055. |
入库方式： OAI收割
来源：长春应用化学研究所
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