Confined Crystallization Behaviors in Polyethylene/Silica Nanocomposites: Synergetic Effects of Interfacial Interactions and Filler Network
文献类型：期刊论文
| 作者 | Zhao, Weiwei1,2; Su, Yunlan1; Gao, Xia1; Qian, Qingyun3; Chen, Xin3; Wittenbrink, Robert3; Wang, Dujin1 |
| 刊名 | JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
 |
| 出版日期 | 2017-03-15 |
| 卷号 | 55期号:6页码:498-505 |
| 关键词 | Crystallization Interfacial Nanocomposites Network |
| 英文摘要 | The confinement effects introduced by nanoparticles have been reported to influence the phase behaviors thus the properties of polymer nanocomposites. In this study, molecular dynamics and crystallization behaviors of polyethylene (PE) composited with three types of silica (SiO2) nanoparticles, namely unmodified SiO2, hydrophobically modified SiO2, SiO2-APTES (3-aminopropyltriethoxysilane) and SiO2-PTES (n-propyltriethoxysilane), were systematically investigated via a combination of DSC, XRD and H-1 solid-state NMR measurements. The suppressions in crystallization and chain mobilities of PE rank in the order of unmodified SiO2< SiO2-APTES< SiO2-PTES due to the increasing interfacial interactions between PE and SiO2 nanoparticles. Additionally, independent of polymer-nanoparticle interactions, a silica network forms for all three kinds of nanocomposites when SiO2 content reaches 83 wt %. The mobilities of polymer chains are severely restricted by such a percolated network structure, leading to a turning point in the crystallization ability of nanocomposites and a new crystallization peak at 45 degrees C lower than that of pure PE. The synergetic effects of interfacial interactions and filler network on polymer crystallization have been thoroughly studied in this work, which will provide guidance on modifying and designing nanocomposites with controlled properties. (C) 2017 Wiley Periodicals, Inc. |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/38278]  |
| 专题 | 化学研究所_工程塑料实验室 |
| 作者单位 | 1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Key Lab Engn Plast, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.ExxonMobil Asia Pacific Res & Dev Co Ltd, 1099 Zixing Rd, Shanghai 200241, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Weiwei,Su, Yunlan,Gao, Xia,et al. Confined Crystallization Behaviors in Polyethylene/Silica Nanocomposites: Synergetic Effects of Interfacial Interactions and Filler Network[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,2017,55(6):498-505. |
| APA | Zhao, Weiwei.,Su, Yunlan.,Gao, Xia.,Qian, Qingyun.,Chen, Xin.,...&Wang, Dujin.(2017).Confined Crystallization Behaviors in Polyethylene/Silica Nanocomposites: Synergetic Effects of Interfacial Interactions and Filler Network.JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,55(6),498-505. |
| MLA | Zhao, Weiwei,et al."Confined Crystallization Behaviors in Polyethylene/Silica Nanocomposites: Synergetic Effects of Interfacial Interactions and Filler Network".JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 55.6(2017):498-505. |
入库方式： OAI收割
来源：化学研究所
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