Mechanical enhancement mechanism of interlocked polymer networks

doi:10.1016/j.mtphys.2022.100768

IHEP OpenIR > 东莞研究部

	Mechanical enhancement mechanism of interlocked polymer networks
	Dai W.T.; Xie Z.H.; Ke Y.B.; You Y.; Rong M.Z.; Zhang M.Q.; He C.Y.; Jiang H.Q.; Yang H.
	2022
发表期刊	Materials Today Physics
EISSN	25425293
卷号	27 页码:100768
条目编号	IHEP00034545
文章类型	Article
摘要	To understand the molecular origin of the significantly improved mechanical properties of the newly emerged reversibly interlocked polymer networks (ILNs), which are composed of two dynamically crosslinked polymers regardless of their miscibility, the present work employs small angle neutron scattering (SANS) technique to study the microstructural evolution of the materials during stretching. Accordingly, polyacrylate networks containing reversible Diels-Alder (DA) bonds and polyether networks containing reversible Schiff base bonds are synthesized and then interlocked together through topological rearrangement of the two single networks. By using deuterated acrylate monomers, furthermore, the single networks with DA bonds are labeled, providing the model ILNs with necessary contrast for the SANS measurements. The strain-dependent SANS profiles and 2D SANS patterns of the ILNs reveal that the latter maintain the homogeneity after extension. It means that the two parent single networks are simultaneously deformed because the interlocking sites act as movable crosslinkages, so that the chains conformation can be modulated and the applied stress can be effectively transferred. When relative movement of the neighboring molecular chains occurs, a great number of molecular chains in the interlocked polymer networks are able to be tightened at the same time, and more mechanical energy can be dissipated by internal friction in the process. The findings reveal that the mechanical enhancement results from the unique interlocked structure, and provide guidance for the rational design of high-performance multi-component polymer materials. © 2022 Elsevier Ltd
DOI	10.1016/j.mtphys.2022.100768
收录类别	ADS
语种	英语
EI主题词	Acrylic monomers - Amides - Equalizers
EI分类号	713.5 Electronic Circuits Other Than Amplifiers, Oscillators, Modulators, Limiters, Discriminators or Mixers - 804.1 Organic Compounds
ADS Bibcode	2022MTPhy..2700768D
ADS URL	https://ui.adsabs.harvard.edu/abs/2022MTPhy..2700768D
ADS引文	https://ui.adsabs.harvard.edu/abs/2022MTPhy..2700768D/citations
引用统计	正在获取... 被引频次：4 [ADS]
文献类型	期刊论文
条目标识符	https://ir.ihep.ac.cn/handle/311005/299853
专题	东莞研究部
作者单位	中国科学院高能物理研究所
第一作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Dai W.T.,Xie Z.H.,Ke Y.B.,et al. Mechanical enhancement mechanism of interlocked polymer networks[J]. Materials Today Physics,2022,27:100768.
APA	Dai W.T..,Xie Z.H..,Ke Y.B..,You Y..,Rong M.Z..,...&Yang H..(2022).Mechanical enhancement mechanism of interlocked polymer networks.Materials Today Physics,27,100768.
MLA	Dai W.T.,et al."Mechanical enhancement mechanism of interlocked polymer networks".Materials Today Physics 27(2022):100768.