Visualizing the Toughening Mechanism of Nanofiller with 3D X-ray Nano-CT: Stress-Induced Phase Separation of Silica Nanofiller and Silicone Polymer Double Networks
文献类型：期刊论文
| 作者 | Li, LB; Yuan QX(袁清习) ; Yuan, QX; Song, LX; Chen, PZ; Chen, L; Tang, XL; Wang, Z
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| 刊名 | MACROMOLECULES
 |
| 出版日期 | 2017 |
| 卷号 | 50期号:18页码:7249-7257 |
| ISSN号 | 0024-9297 |
| DOI | 10.1021/acs.macromol.7b00539 |
| 文献子类 | Article |
| 英文摘要 | Adding silica nanofiller in silicone rubber can toughen the matrix 3 orders in terms of fracture energy, which is far larger than most other nanofiller rubber systems. To unveil the astonishing toughening mechanism, we employ in situ synchrotron radiation X-ray nanocomputed tomography (Nano-CT) technique with high spatial resolution (64 nm) to study the structural evolution of silica nanofiller in silicone rubber matrix at different strains. The imaging results show that silica nanofiller forms three-dimensional connected network, which couples with silicone chain network to construct a double-network structure. Stress-induced phase separation between silica nanofiller and silicone polymer chain networks is observed during tensile deformation. Unexpectedly, though the spatial position and morphology of nanofiller network changes greatly at large strains, the connectivity of nanofiller network shows negligible reduction. This indicates that nanofiller network undergoes destruction and reconstruction simultaneously, during which silica nanofiller serves as reversible high functionality cross-linker. The reversible bonding between silica nanofiller and silicone rubber or between nanofiller particles can dissipate mechanical energy effectively, which may account for the 3 orders enhancement of toughness. |
| 电子版国际标准刊号 | 1520-5835 |
| WOS关键词 | FILLER-RUBBER INTERFACE ; CARBON-BLACK ; NATURAL-RUBBER ; DYNAMIC PROPERTIES ; QUANTITATIVE CORRELATION ; HIERARCHICAL STRUCTURES ; VISCOELASTIC BEHAVIOR ; COMPUTED-TOMOGRAPHY ; BUTADIENE RUBBER ; HYBRID HYDROGELS |
| WOS研究方向 | Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000411918700025 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285281]  |
| 专题 | 高能物理研究所_多学科研究中心 高能物理研究所_理论物理室 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Li, LB,Yuan QX,Yuan, QX,et al. Visualizing the Toughening Mechanism of Nanofiller with 3D X-ray Nano-CT: Stress-Induced Phase Separation of Silica Nanofiller and Silicone Polymer Double Networks[J]. MACROMOLECULES,2017,50(18):7249-7257. |
| APA | Li, LB.,袁清习.,Yuan, QX.,Song, LX.,Chen, PZ.,...&Wang, Z.(2017).Visualizing the Toughening Mechanism of Nanofiller with 3D X-ray Nano-CT: Stress-Induced Phase Separation of Silica Nanofiller and Silicone Polymer Double Networks.MACROMOLECULES,50(18),7249-7257. |
| MLA | Li, LB,et al."Visualizing the Toughening Mechanism of Nanofiller with 3D X-ray Nano-CT: Stress-Induced Phase Separation of Silica Nanofiller and Silicone Polymer Double Networks".MACROMOLECULES 50.18(2017):7249-7257. |
入库方式： OAI收割
来源：高能物理研究所
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