Effect of Copolymerization Time on the Microstructure and Properties of Polypropylene/Poly(ethylene-co-propylene) In-Reactor Alloys
文献类型：期刊论文
| 作者 | Fan, Yandi1; Zhang, Chunyu2; Xue, Yanhu1; Nie, Wei1; Zhang, Xuequan2; Ji, Xiangling1; Bo, Shuqin1 |
| 刊名 | POLYMER JOURNAL
 |
| 出版日期 | 2009 |
| 卷号 | 41期号:12页码:1098-1104 |
| 关键词 | Pp/epr In-reactor Alloy Fractionation Microstructure |
| ISSN号 | 0032-3896 |
| DOI | 10.1295/polymj.PJ2009150 |
| 英文摘要 | Three Polypropylene/Poly(ethylene-co-propylene) (PP/EPR) in-reactor alloys produced by a two-stage slurry/gas polymerization had different ethylene contents and mechanical properties, which were achieved by controlling the copolymerization time. The three alloys were fractionated into five fractions via temperature rising dissolution fractionation (TRDF), respectively. The chain structures of the whole samples and their fractions were analyzed using high-temperature gel permeation chromatography (GPC), Fourier transform infrared (FT-IR), (13)C nuclear magnetic resonance ((13)C NMR), and differential scanning calorimetry (DSC) techniques. These three in-reactor alloys mainly contained four portions: ethylenepropylene random copolymer (EPR), ethylene-propylene (EP) segmented and block copolymers, and propylene homopolymer. The increased copolymerization time caused the increased ethylene content of the sample. The weight percent of EPR, EP segmented and block copolymer also became higher. The more EPR content indeed improves the toughness of the alloy but lowers its stiffness. Increasing the ethylene content in the EPR fraction and EP segmented and block copolymer, as well as the suitable content of EPR, is believed to be the key factors resulting in the excellent toughness-stiffness balance of in-reactor alloys. |
| 语种 | 英语 |
| WOS记录号 | WOS:000272990800013 |
| 出版者 | SOC POLYMER SCIENCE JAPAN |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/66681]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Ji, Xiangling |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, Lab Polymer Engn, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, Yandi,Zhang, Chunyu,Xue, Yanhu,et al. Effect of Copolymerization Time on the Microstructure and Properties of Polypropylene/Poly(ethylene-co-propylene) In-Reactor Alloys[J]. POLYMER JOURNAL,2009,41(12):1098-1104. |
| APA | Fan, Yandi.,Zhang, Chunyu.,Xue, Yanhu.,Nie, Wei.,Zhang, Xuequan.,...&Bo, Shuqin.(2009).Effect of Copolymerization Time on the Microstructure and Properties of Polypropylene/Poly(ethylene-co-propylene) In-Reactor Alloys.POLYMER JOURNAL,41(12),1098-1104. |
| MLA | Fan, Yandi,et al."Effect of Copolymerization Time on the Microstructure and Properties of Polypropylene/Poly(ethylene-co-propylene) In-Reactor Alloys".POLYMER JOURNAL 41.12(2009):1098-1104. |
入库方式： OAI收割
来源：化学研究所
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