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	Visualizing the toughening mechanism of nanofiller with 3d x-ray nano-ct: stress-induced phase separation of silica nanofiller and silicone polymer double networks
	Song, Lixian1,2,3; Wang, Zhen1,2; Tang, Xiaoliang1,2; Chen, Liang1,2; Chen, Pinzhang1,2; Yuan, Qingxi4; Li, Liangbin1,2
刊名	Macromolecules
	2017-09-26
卷号	50期号:18页码:7249-7257
ISSN号	0024-9297
DOI	10.1021/acs.macromol.7b00539
通讯作者	Chen, liang(rychen@ustc.edu.cn) ; Li, liangbin(lbli@ustc.edu.cn)
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.
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
WOS类目	Polymer Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000411918700025
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2177076
专题	高能物理研究所
通讯作者	Chen, Liang; Li, Liangbin
作者单位	1.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Peoples R China 2.Univ Sci & Technol China, CAS Key Lab Soft Matter Chem, Hefei 230026, Peoples R China 3.Southwest Univ Sci & Technol, State Key Lab Cultivat Base Nonmet Composites & F, Mianyang 621010, Sichuan, Peoples R China 4.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Song, Lixian,Wang, Zhen,Tang, Xiaoliang,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	Song, Lixian.,Wang, Zhen.,Tang, Xiaoliang.,Chen, Liang.,Chen, Pinzhang.,...&Li, Liangbin.(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	Song, Lixian,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.

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