Characterization of the microstructure of impact polypropylene alloys by preparative temperature rising elution fractionation
文献类型：期刊论文
| 作者 | Xue YH ; Fan YD ; Bo SQ ; Ji XL |
| 刊名 | european polymer journal
 |
| 出版日期 | 2011 |
| 卷号 | 47期号:8页码:1646-1653 |
| 关键词 | ZIEGLER-NATTA CATALYST IN-REACTOR ALLOYS MECHANICAL-PROPERTIES CHAIN STRUCTURE GAS-PHASE ETHYLENE BLENDS MORPHOLOGY COPOLYMER HETEROGENEITY |
| ISSN号 | 0014-3057 |
| 通讯作者 | bo sq |
| 中文摘要 | two polypropylene alloys (samples a and b), as impact polypropylene (pp) with similar ethylene contents and melt indices but different impact properties at low temperatures, are fractionated into eight fractions using preparative temperature rising elution fractionation. the microstructure of the original samples and their fractions are studied using high-temperature gel permeation chromatography, fourier transform infrared spectroscopy, (13)c nuclear magnetic resonance spectroscopy, and differential scanning calorimetry. the results indicate that the two alloys are mainly composed of four portions: ethylene-propylene random copolymer (epr), ethylene-propylene segmented copolymer, ethylene-propylene block copolymer, and propylene homopolymer. sample a contains more epr and more fractions with higher isotacticity eluted at 120 and 140 degrees c than sample b. the difference in the microstructure distributions of both pp alloys results in observable differences in their mechanical properties: sample a has better impact toughness and possesses higher rigidity than sample b. sample a also exhibits better balance between toughness and stiffness. (c) 2011 elsevier ltd. all rights reserved. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000293939800017 |
| 公开日期 | 2012-06-08 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/44434]  |
| 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 | Xue YH,Fan YD,Bo SQ,et al. Characterization of the microstructure of impact polypropylene alloys by preparative temperature rising elution fractionation[J]. european polymer journal,2011,47(8):1646-1653. |
| APA | Xue YH,Fan YD,Bo SQ,&Ji XL.(2011).Characterization of the microstructure of impact polypropylene alloys by preparative temperature rising elution fractionation.european polymer journal,47(8),1646-1653. |
| MLA | Xue YH,et al."Characterization of the microstructure of impact polypropylene alloys by preparative temperature rising elution fractionation".european polymer journal 47.8(2011):1646-1653. |
入库方式： OAI收割
来源：长春应用化学研究所
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