Critical Content of Ultrahigh-Molecular-Weight Polyethylene To Induce the Highest Nucleation Rate for Isotactic Polypropylene in Blends
文献类型：期刊论文
| 作者 | Shao, Wei1,2; Zhang, Yaqiong1; Wang, Zhigang1; Niu, Yanhua2; Yue, Ruijuan3; Hu, Wenping2 |
| 刊名 | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
 |
| 出版日期 | 2012-12-12 |
| 卷号 | 51期号:49页码:15953-15961 |
| ISSN号 | 0888-5885 |
| DOI | 10.1021/ie302542x |
| 英文摘要 | The influence of the addition of low amounts of ultrahigh-molecular-weight polyethylene (UHMWPE) on the crystallization kinetics of isotactic polypropylene (iPP) in iPP/UHMWPE blends has been investigated by means of differential scanning calorimetry (DSC) and polarized optical microscopy. During the nonisothermal crystallization process, the primarily formed UHMWPE crystals serve as heterogeneous nucleating agents for iPP nucleation, whereas during the isothermal crystallization process, UHMWPE is in the molten state, iPP nucleation preferentially occurs at the UHMWPE and iPP phase interfaces, and the spherulitic growth rates are not obviously affected. It is particularly interesting to find a critical UHMWPE content (2.5 wt %) in the blends to induce the highest iPP nucleation rate; however, above the critical UHMWPE content, the iPP nucleation rate slows because of aggregation of the UHMWPE component. A delicately designed DSC measurement provides insight into the nucleation mechanism of iPP at the interfaces between the UHMWPE and iPP phase domains. It is proposed that the concentration fluctuations generated from the unstable inhomogeneous phase interfaces in the iPP/UHMWPE blends promote the formation of nuclei, which eventually enhances the nucleation and overall crystallization rates of the iPP component. |
| 语种 | 英语 |
| WOS记录号 | WOS:000313769700017 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/48653]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang, Zhigang |
| 作者单位 | 1.Univ Sci & Technol China, CAS Key Lab Soft Matter Chem, Hefei Natl Lab Phys Sci Microscale, Dept Polymer Sci & Engn, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 3.Patent Examinat Cooperat Ctr State Intellectual P, Div Chem, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shao, Wei,Zhang, Yaqiong,Wang, Zhigang,et al. Critical Content of Ultrahigh-Molecular-Weight Polyethylene To Induce the Highest Nucleation Rate for Isotactic Polypropylene in Blends[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2012,51(49):15953-15961. |
| APA | Shao, Wei,Zhang, Yaqiong,Wang, Zhigang,Niu, Yanhua,Yue, Ruijuan,&Hu, Wenping.(2012).Critical Content of Ultrahigh-Molecular-Weight Polyethylene To Induce the Highest Nucleation Rate for Isotactic Polypropylene in Blends.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,51(49),15953-15961. |
| MLA | Shao, Wei,et al."Critical Content of Ultrahigh-Molecular-Weight Polyethylene To Induce the Highest Nucleation Rate for Isotactic Polypropylene in Blends".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 51.49(2012):15953-15961. |
入库方式： OAI收割
来源：化学研究所
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