The Crystallization Behavior Regulating Nature of Hydrogen Bonds Interaction on Polyamide 6,6 by Poly(vinyl pyrrolidone)

Yang Liu; Li Peng; Jie-Long Lin; Yong Zhou; Du-Jin Wang; Charles C. Han; Xian-Bo Huang; Xia Dong

doi:10.1007/s10118-022-2852-8

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The Crystallization Behavior Regulating Nature of Hydrogen Bonds Interaction on Polyamide 6,6 by Poly(vinyl pyrrolidone)

RESEARCH ARTICLE | Updated：2023-01-18

- The Crystallization Behavior Regulating Nature of Hydrogen Bonds Interaction on Polyamide 6,6 by Poly(vinyl pyrrolidone)
- Chinese Journal of Polymer Science Vol. 41, Issue 3, Pages: 394-404(2023)
- Affiliations：
  
  a.National-certified Enterprise Technology Center, Kingfa Science and Technology Co., LTD., Guangzhou 510663, China
  b.CAS Key Laboratory of Engineering Plastics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
  c.University of Chinese Academy of Sciences, Beijing 100049, China
- Author bio：
  
  huangxianbo@kingfa.com.cn (X.B.H.)
  xiadong@iccas.ac.cn (X.D.)
- Funds：
- DOI：10.1007/s10118-022-2852-8
  CLC：
- Received：20 June 2022，
  
  Revised：2022-7-18，
  
  Accepted：28 July 2022，
  
  Online First：09 October 2022，
  
  Published：01 March 2023
- Accepted：
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Liu, Y.; Peng, L.; Lin, J. L.; Zhou, Y.; Wang, D. J.; Han, C. C.; Huang, X. B.; Dong, X. The crystallization behavior regulating nature of hydrogen bonds interaction on polyamide 6,6 by poly(vinyl pyrrolidone). Chinese J. Polym. Sci. 2023, 41, 394–404

Yang Liu, Li Peng, Jie-Long Lin, et al. The Crystallization Behavior Regulating Nature of Hydrogen Bonds Interaction on Polyamide 6,6 by Poly(vinyl pyrrolidone)[J]. Chinese Journal of Polymer Science, 2023, 41(3): 394-404.
Liu, Y.; Peng, L.; Lin, J. L.; Zhou, Y.; Wang, D. J.; Han, C. C.; Huang, X. B.; Dong, X. The crystallization behavior regulating nature of hydrogen bonds interaction on polyamide 6,6 by poly(vinyl pyrrolidone). Chinese J. Polym. Sci. 2023, 41, 394–404 DOI： 10.1007/s10118-022-2852-8.

Yang Liu, Li Peng, Jie-Long Lin, et al. The Crystallization Behavior Regulating Nature of Hydrogen Bonds Interaction on Polyamide 6,6 by Poly(vinyl pyrrolidone)[J]. Chinese Journal of Polymer Science, 2023, 41(3): 394-404. DOI： 10.1007/s10118-022-2852-8.

摘要

The hydrogen bonds interaction between Poly (vinyl pyrrolidone) and PA66 is highlighted for the effective regulation of crystallization behaviour of PA66. Tc and crystallization rate are decreased by PVP

with the lattice and

remain unchanged. Thus

the processability is improved without sacrificing mechanical properties.

Abstract

The crystallization behavior of polyamide 6

6 (PA66) under complex flow field is of great importance for its final mechanical properties. Poly(vinyl pyrrolidone) (PVP) was applied as crystallization modifying agency to improve processability of PA66. The regulation nature on hydrogen bonds (H-bonds) interaction of PVP was studied upon cooling process. As revealed by

in situ

FTIR

the sample with 5 wt% PVP displays decreased enthalpy change (Δ

) for both the generation of H-bonds and the transition of H-bonds from “disordered” to “ordered” state

which illustrates the molecular mechanism for the regulation of crystallzation behavior. Moveover

2D-WAXD is applied to reveal the evolution of microstructure for sample under external injection field. Hermans orientation factor (

) decreases obviously with the addition of PVP

because the relaxation of chain segments is promoted as well the crystallization is retarded. The above crystallization and microstructure changes during the processing provokes the improvement of processability without the apparent sacrifice of mechanical properties.

关键词

Keywords

references

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