

FOLLOWUS
a.Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD HPPC Lab, IGCME, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
b.Spallation Neutron Source Science Center, China Spallation Neutron Source, Dongguan 523803, China
c.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
d.College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
youy@gzu.edu.cn (Y.Y.)
cesrmz@mail.sysu.edu.cn (M.Z.R.)
ceszmq@mail.sysu.edu.cn (M.Q.Z.)
Received:21 October 2023,
Revised:2023-11-7,
Accepted:20 November 2023,
Online First:13 December 2023,
Published:01 February 2024
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Dai, W. T.; Xie, Z. H.; Ke, Y. B.; You, Y.; Rong, M. Z.; Zhang, M. Q. Topological confinement in reversibly interlocked polymer networks. Chinese J. Polym. Sci. 2024, 42, 133–140
Wan-Ting Dai, Zhen-Hua Xie, Yu-Bin Ke, et al. Topological Confinement in Reversibly Interlocked Polymer Networks[J]. Chinese Journal of Polymer Science, 2024, 42(2): 133-140.
Dai, W. T.; Xie, Z. H.; Ke, Y. B.; You, Y.; Rong, M. Z.; Zhang, M. Q. Topological confinement in reversibly interlocked polymer networks. Chinese J. Polym. Sci. 2024, 42, 133–140 DOI: 10.1007/s10118-024-3070-3.
Wan-Ting Dai, Zhen-Hua Xie, Yu-Bin Ke, et al. Topological Confinement in Reversibly Interlocked Polymer Networks[J]. Chinese Journal of Polymer Science, 2024, 42(2): 133-140. DOI: 10.1007/s10118-024-3070-3.
In this work
swelling-induced structural evolution of the two sub-networks mutually affected each other through regulating the pH of the swelling solvent
even when the inter-component hydrogen bonds were absent
proving the presence of topological interlocking.
Recently
we reported a series of reversibly interlocked polymer networks (RILNs)
whose mechanical robustness and functionalities improvement was believed to be derived from topological interlocking of two sub-networks
although the direct evidence for the deduction is still lacking. Herein
a specially-designed RILNs system
in which the inter-component hydrogen bonds can be shielded as needed
was prepared and used to study the micro-structures of RILNs
aiming to verify the existence of mechanical interlocking in RILNs. By changing the pH of the swelling solvent
the effect exerted by the inter-component non-covalent bonds was eliminated
so detailed information of the networks structure was exposed. The small angle X-ray scattering (SAXS) and small-angle neutron scattering (SANS) results indicated that swelling-induced structural evolution of the two sub-networks mutually affected each other
even when the inter-component hydrogen bonds were absent
proving the presence of topological interlocking. The findings may help to draw a more accurate physical image and reveal the detailed structure-property relationship of RILNs.
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