首页|Topological Confinement in Reversibly Interlocked Polymer Networks

Topological Confinement in Reversibly Interlocked Polymer Networks

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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 struc-ture 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,prov-ing 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.

Reversibly interlocked polymer networksSmall angle X-ray scatteringSmall-angle neutron scatteringTopological confinement

Wan-Ting Dai、Zhen-Hua Xie、Yu-Bin Ke、Yang You、Min-Zhi Rong、Ming-Qiu Zhang

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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

Spallation Neutron Source Science Center,China Spallation Neutron Source,Dongguan 523803,China

Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

College of Materials and Metallurgy,Guizhou University,Guiyang 550025,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Guangdong ProvinceNatural Science Foundation of Guangdong ProvinceNatural Science Foundation of Guangdong ProvinceScience and Technology Planning Project of Guangzhou CityTalented Program of Guizhou UniversityFundamental Research Funds for the Central Universities,Sun Yatsen UniversityGBRCE for Functional Molecular EngineeringYouth Innovation Promotion Association,CASGuangdong Basic and Applied Basic Research Foundation

5203301152173092519732372019B15151200382020A15150112762021A1515010417202201011568X202200823yxqntd00220200102021A1515110908

2024

10.1007/s10118-024-3070-3

高分子科学(英文版)
中国化学会　中国科学院化学研究所

高分子科学(英文版)

CSTPCD
影响因子：0.721
ISSN：0256-7679
年,卷(期)：2024.42(2)
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