Isothermal Crystallization of <italic style="font-style: italic">i</italic>PP in Environment-friendly Diluents: Effect of Binary Diluents and Crystallization Temperature on Crystallization Kinetics

Yu-Jie Wang; Su-Ying Yan; Zhi-Ping Zhao; Zhen-Yu Xi

doi:10.1007/s10118-019-2219-y

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Isothermal Crystallization of iPP in Environment-friendly Diluents: Effect of Binary Diluents and Crystallization Temperature on Crystallization Kinetics

ARTICLE | Updated：2021-02-18

- Isothermal Crystallization of iPP in Environment-friendly Diluents: Effect of Binary Diluents and Crystallization Temperature on Crystallization Kinetics
- Chinese Journal of Polymer Science Vol. 37, Issue 6, Pages: 617-626(2019)
- Affiliations：
  
  a.School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China
  b.Environmental Protection Research Institute, Beijing Research Institute of Chemical Industry, SINOPEC, Beijing 100013, China
- Author bio：
  
  zhaozp@bit.edu.cn
- Funds：
- DOI：10.1007/s10118-019-2219-y
  CLC：
- Received：23 October 2018，
  
  Revised：2018-12-13，
  
  Accepted：03 January 2019，
  
  Online First：15 February 2019，
  
  Published：2019-06
- Accepted：
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Citation: Wang, Y. J.; Yan, S. Y.; Zhao, Z. P.; Xi, Z. Y. Isothermal crystallization of iPP in environment-friendly diluents: Effect of binary diluents and crystallization temperature on crystallization kinetics. Chinese J. Polym. Sci. 2019, 37, 617–626

Yu-Jie Wang, Su-Ying Yan, Zhi-Ping Zhao, et al. Isothermal Crystallization of iPP in Environment-friendly Diluents: Effect of Binary Diluents and Crystallization Temperature on Crystallization Kinetics[J]. Chinese Journal of Polymer Science, 2019, 37(6): 617-626. DOI: 10.1007/s10118-019-2219-y.
Citation: Wang, Y. J.; Yan, S. Y.; Zhao, Z. P.; Xi, Z. Y. Isothermal crystallization of iPP in environment-friendly diluents: Effect of binary diluents and crystallization temperature on crystallization kinetics. Chinese J. Polym. Sci. 2019, 37, 617–626 DOI： 10.1007/s10118-019-2219-y.

Yu-Jie Wang, Su-Ying Yan, Zhi-Ping Zhao, et al. Isothermal Crystallization of iPP in Environment-friendly Diluents: Effect of Binary Diluents and Crystallization Temperature on Crystallization Kinetics[J]. Chinese Journal of Polymer Science, 2019, 37(6): 617-626. DOI: 10.1007/s10118-019-2219-y. DOI：

摘要

Abstract

The growing demand for non-toxic solvents for membrane preparation has motivated the studies for green and sustainable alternatives of solvents. The effect of droplet isothermal growth within the liquid-liquid phase separation region on isothermal spherulitic growth rate of isotactic polypropylene (

PP) was investigated. The results showed that the droplets grew up at a rate of 0.0172 μm·s

−1

. The larger droplets slowed down the isothermal spherulitic growth rate of

PP. Higher mass ratio of carnauba wax (Cwax)/soybean oil (SO) resulted in faster droplet growth due to weak interaction with polymers. The isothermal crystallization behaviors of

PP in environment-friendly binary diluents consisting of Cwax and SO mixture were further investigated experimentally using polarized optical microscopy. It was demonstrated that the isothermal spherulitic growth rate of

PP in diluents decreased nonlinearly with the increasing crystallization temperature. Compared with virgin

isothermal spherulitic growth rate of

PP in SO diluent was significantly slowed down. The spherulitic growth was further retarded after the addition of Cwax in mixed diluents

resulting in a lower crystallization rate than that in SO. Moreover

the crystal form of

PP membranes was found to be

type through the characterization of small angle X-ray scattering and wide angle X-ray diffraction.

关键词

Keywords

references

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Isothermal Crystallization of iPP in Environment-friendly Diluents: Effect of Binary Diluents and Crystallization Temperature on Crystallization Kinetics

DOI：10.1007/s10118-019-2219-y

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Abstract

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