Time and Temperature Dependence of the Structural Evolution for Polyamide 1012

Xin-Ran Liu; Yu Wang; Li-Yuan Liu; Xia Dong; Du-Jin Wang

doi:10.1007/s10118-020-2434-6

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Time and Temperature Dependence of the Structural Evolution for Polyamide 1012

ARTICLE | Updated：2020-06-09

- Time and Temperature Dependence of the Structural Evolution for Polyamide 1012
- Chinese Journal of Polymer Science Vol. 38, Issue 9, Pages: 993-998(2020)
- Affiliations：
  
  a.CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
  b.University of Chinese Academy of Sciences, Beijing 100049, China
  c.Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China
- Author bio：
  
  xiadong@iccas.ac.cn
- Funds：
- DOI：10.1007/s10118-020-2434-6
  CLC：
- Received：09 February 2020，
  
  Revised：2020-3-19，
  
  Accepted：24 March 2020，
  
  Online First：09 June 2020，
  
  Published：2020-09
- Accepted：
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Liu, X. R.; Wang, Y.; Liu, L. Y.; Dong, X.; Wang, D. J. Time and temperature dependence of the structural evolution for polyamide 1012. Chinese J. Polym. Sci. 2020, 38, 993–998

Xin-Ran Liu, Yu Wang, Li-Yuan Liu, et al. Time and Temperature Dependence of the Structural Evolution for Polyamide 1012[J]. Chinese Journal of Polymer Science, 2020, 38(9): 993-998.
Liu, X. R.; Wang, Y.; Liu, L. Y.; Dong, X.; Wang, D. J. Time and temperature dependence of the structural evolution for polyamide 1012. Chinese J. Polym. Sci. 2020, 38, 993–998 DOI： 10.1007/s10118-020-2434-6.

Xin-Ran Liu, Yu Wang, Li-Yuan Liu, et al. Time and Temperature Dependence of the Structural Evolution for Polyamide 1012[J]. Chinese Journal of Polymer Science, 2020, 38(9): 993-998. DOI： 10.1007/s10118-020-2434-6.

摘要

Abstract

The rheological property evolution of polyamide 1012 (PA1012) in the isothermal process in molten state has been investigated. The results show that the viscosity increases and crosslinking reaction occurs simultaneously together with the increase of temperature

thus causing the variation of storage modulus (

′) and loss modulus (

″) in the repeated frequency sweeps with residual time. This research has pointed out that the superposition is valid for monitoring the complex behavior composed of the viscosity increasing and crosslink occurring process by tracing the variation behavior of the crossover points of

′ and

″ with time

revealing the same time-temperature dependence of the two reactions in the isothermal process. A normalized master curve has been proposed to describe the melt behavior at a given temperature.

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references

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