Phase structure and crystallization behavior of polypropylene in-reactor alloys: insights from both inter- and intramolecular compositional heterogeneity
文献类型：期刊论文
| 作者 | Zhu, Haijin1,2; Monrabal, Benjamin3; Han, Charles C.1; Wang, Dujin1 |
| 刊名 | Macromolecules
 |
| 出版日期 | 2008-02-12 |
| 卷号 | 41期号:3页码:826-833 |
| ISSN号 | 0024-9297 |
| DOI | 10.1021/ma702324h |
| 通讯作者 | Wang, dujin(djwang@iccas.ac.cn) |
| 英文摘要 | Systematic investigation on the compositional heterogeneity, phase structure, the crystallization and subsequent melting behavior of two commercial in-reactor alloys eb-p and ep-p (ethylene-co-butylene polypropylene and ethylene-co-propylene polypropylene) from basell were conducted. the composition of the alloys and the chain structure of each component were characterized by combinatorial using of preparative tref and c-13 nmr technique. the compositional heterogeneities of both samples were further studied by ssa technique, and possible thermal fractionation mechanisms were then inferred. correlations between the mechanical properties and the molecular architectures and phase structures were discussed. the results show that the excellent balance between toughness and rigidity of sample eb-p primarily benefits from the crystalline polyethylene homopolymer (hpe) phase and the amorphous ethylene-alpha-olefin copolymer (ec) component, which is proved to be enriched at the interface between the dispersed polypropylene homopolymer phase (hpp) and the matrix (hpe). as for ep-p sample, the very high amorphous ec content, and the homogeneous and interpenetrating cocontinuous phase structure in the alloy are considered to be mainly responsible for the outstanding low-temperature impact toughness. |
| WOS关键词 | LOW-DENSITY POLYETHYLENE ; IMPACT COPOLYMER POLYPROPYLENE ; RISING ELUTION FRACTIONATION ; SUCCESSIVE SELF-NUCLEATION ; INJECTION-MOLDED SAMPLES ; ALPHA-OLEFIN COPOLYMER ; CO-PROPYLENE BLENDS ; THERMAL-FRACTIONATION ; ISOTACTIC-POLYPROPYLENE ; METALLOCENE PLASTOMER |
| WOS研究方向 | Polymer Science |
| WOS类目 | Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000252944900048 |
| 出版者 | AMER CHEMICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2392216 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Wang, Dujin |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Joint Lab Polymer Sci & Mat, CAS Key Lab Engn Plast,Beijing Natl Lab Mol Sci, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China 3.Polymer Char, E-46980 Paterna, Spain |
| 推荐引用方式 GB/T 7714 | Zhu, Haijin,Monrabal, Benjamin,Han, Charles C.,et al. Phase structure and crystallization behavior of polypropylene in-reactor alloys: insights from both inter- and intramolecular compositional heterogeneity[J]. Macromolecules,2008,41(3):826-833. |
| APA | Zhu, Haijin,Monrabal, Benjamin,Han, Charles C.,&Wang, Dujin.(2008).Phase structure and crystallization behavior of polypropylene in-reactor alloys: insights from both inter- and intramolecular compositional heterogeneity.Macromolecules,41(3),826-833. |
| MLA | Zhu, Haijin,et al."Phase structure and crystallization behavior of polypropylene in-reactor alloys: insights from both inter- and intramolecular compositional heterogeneity".Macromolecules 41.3(2008):826-833. |
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来源：中国科学院大学
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