TOC GraphicThe single-chain elasticity of POM obtained in nonane can be described well by the QM-FRC model when the rotating unit length is 0.144 nm (C―O bond length), indicating that the inherent elasticity of POM was obtained.

Jin-Xia Yang; Hu-Jun Qian; Zheng Gong; Zhong-Yuan Lu; Shu-Xun Cui

doi:10.1007/s10118-022-2679-3

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TOC GraphicThe single-chain elasticity of POM obtained in nonane can be described well by the QM-FRC model when the rotating unit length is 0.144 nm (C―O bond length), indicating that the inherent elasticity of POM was obtained.

RAPID COMMUNICATION | Updated：2022-03-28

- TOC GraphicThe single-chain elasticity of POM obtained in nonane can be described well by the QM-FRC model when the rotating unit length is 0.144 nm (C―O bond length), indicating that the inherent elasticity of POM was obtained.
- Stretching Elasticity and Flexibility of Single Polyformaldehyde Chain
- Chinese Journal of Polymer Science 2022年40卷第4期页码：333-337
- Affiliations：
  
  a.Key Laboratory of Advanced Technologies of Materials (Ministry of Education), Southwest Jiaotong University, Chengdu 610031, China
  b.State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China
  c.School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
- Author bio：
  
  cuishuxun@swjtu.edu.cn
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (No. 21774102).
- DOI：10.1007/s10118-022-2679-3
  中图分类号：
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Jin-Xia Yang, Hu-Jun Qian, Zheng Gong, 等. TOC GraphicThe single-chain elasticity of POM obtained in nonane can be described well by the QM-FRC model when the rotating unit length is 0.144 nm (C―O bond length), indicating that the inherent elasticity of POM was obtained.[J]. Chinese Journal of Polymer Science, 2022,40(4):333-337.

Jin-Xia Yang, Hu-Jun Qian, Zheng Gong, et al. Stretching Elasticity and Flexibility of Single Polyformaldehyde Chain[J]. Chinese Journal of Polymer Science, 2022,40(4):333-337.
Jin-Xia Yang, Hu-Jun Qian, Zheng Gong, 等. TOC GraphicThe single-chain elasticity of POM obtained in nonane can be described well by the QM-FRC model when the rotating unit length is 0.144 nm (C―O bond length), indicating that the inherent elasticity of POM was obtained.[J]. Chinese Journal of Polymer Science, 2022,40(4):333-337. DOI： 10.1007/s10118-022-2679-3.

Jin-Xia Yang, Hu-Jun Qian, Zheng Gong, et al. Stretching Elasticity and Flexibility of Single Polyformaldehyde Chain[J]. Chinese Journal of Polymer Science, 2022,40(4):333-337. DOI： 10.1007/s10118-022-2679-3.

摘要

Abstract

In this work, the single-chain elasticity of polyformaldehyde (POM) is studied, for the first time, by employing atomic force microscopy (AFM)-based single molecule force spectroscopy (SMFS). We find that the single-chain elasticity of POM in a nonpolar organic solvent (nonane) can be described well by a theoretical model (QM-FRC model), when the rotating unit length is 0.144 nm (C―O bond length). After comparison, POM is more flexible than polystyrene (a typical polymer with C―C backbone) at the single-chain level, which is reasonable since the C―O bond has a lower rotation barrier than C―C bond. This result indicates that the flexibility of a polymer chain can be tuned by the C―O bond proportion in backbone, which casts new light on the rational design of new synthetic polymers in the future.

关键词

Keywords

PolyformaldehydeSingle molecule force spectroscopyInherent elasticityFlexibilityQM-FRC model

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