Time evolution of phase structure and corresponding mechanical properties of ipp/peoc blends in the late-stage phase separation and crystallization
文献类型：期刊论文
| 作者 | Pang, Yongyan; Dong, Xia; Zhao, Ying; Han, Charles C.; Wang, Dujin |
| 刊名 | Polymer
 |
| 出版日期 | 2007-10-05 |
| 卷号 | 48期号:21页码:6395-6403 |
| 关键词 | Polypropylene/poly(ethylene-co-octene) blend Morphology evolution Mechanical property |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2007.08.032 |
| 通讯作者 | Dong, xia(xiadong@iccas.ac.cn) |
| 英文摘要 | A typical toughened polymeric alloy system, isotactic polypropylene (ipp)/poly(ethylene-co-octene) (peoc) blend, was selected in this study to investigate the influence of phase separation and crystallization on the final mechanical properties of the polyolefin blend. the time dependence of the morphology evolution of this ipp/peoc blend with different compositions was annealed at both 200 and 170 degrees c and investigated with scanning electron microscopy (sem) and phase contrast optical microscopy (pcom). it was found that under the above two phase separation temperatures, the domain size of ipp80/peoc-20 (peoc-20) increases only slightly, while the structure evolution of ipp60/peoc-40 (peoc-40) is quite prominent. the tensile tests revealed that the mechanical properties of peoc-20, including break strength and elongation at break decrease only in a very small amount, while those of peoc-40 are depressed obviously with phase separation time. the decrease of interphase and a sharper boundary resulting from domain coarsening during the late-stage phase separation are responsible for the poor tensile properties. it is believed that the composition, the annealing time and the processing temperatures all contribute to the morphology evolution and the consequent mechanical properties of ipp/peoc blends, furthermore, the crystallization procedure is another crucial factor influencing the ultimate mechanical properties of the investigated blends. (c) 2007 elsevier ltd. all rights reserved. |
| WOS关键词 | ETHYLENE-OCTENE COPOLYMERS ; SPINODAL DECOMPOSITION ; MORPHOLOGICAL PROPERTIES ; POLYOLEFIN ELASTOMER ; CRYSTAL MORPHOLOGY ; TENSILE PROPERTIES ; LIGHT-SCATTERING ; MOLECULAR-WEIGHT ; POLYMER BLENDS ; COMONOMER TYPE |
| WOS研究方向 | Polymer Science |
| WOS类目 | Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000250492000025 |
| 出版者 | ELSEVIER SCI LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2382577 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Dong, Xia |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Inst Chem, Joint Lab Polymer Sci & Mat, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pang, Yongyan,Dong, Xia,Zhao, Ying,et al. Time evolution of phase structure and corresponding mechanical properties of ipp/peoc blends in the late-stage phase separation and crystallization[J]. Polymer,2007,48(21):6395-6403. |
| APA | Pang, Yongyan,Dong, Xia,Zhao, Ying,Han, Charles C.,&Wang, Dujin.(2007).Time evolution of phase structure and corresponding mechanical properties of ipp/peoc blends in the late-stage phase separation and crystallization.Polymer,48(21),6395-6403. |
| MLA | Pang, Yongyan,et al."Time evolution of phase structure and corresponding mechanical properties of ipp/peoc blends in the late-stage phase separation and crystallization".Polymer 48.21(2007):6395-6403. |
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来源：中国科学院大学
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