Effects of Branches on the Crystallization Kinetics of Polypropylene-<italic style="font-style: italic">g</italic>-Polystyrene and Polypropylene-<italic style="font-style: italic">g</italic>-Poly(<italic style="font-style: italic">n</italic>-butyl acrylate) Graft Copolymers with Well-defined Molecular Structures

Lu Wang; Zhi-wei Jiang; Feng Liu; Zhi-jie Zhang; Tao Tang

doi:10.1007/s10118-014-1404-2

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Effects of Branches on the Crystallization Kinetics of Polypropylene-g-Polystyrene and Polypropylene-g-Poly(n-butyl acrylate) Graft Copolymers with Well-defined Molecular Structures

Updated：2021-06-21

- Effects of Branches on the Crystallization Kinetics of Polypropylene-g-Polystyrene and Polypropylene-g-Poly(n-butyl acrylate) Graft Copolymers with Well-defined Molecular Structures
- Chinese Journal of Polymer Science Vol. 32, Issue 3, Pages: 333-349(2014)
- Affiliations：
  
  a.State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  b.University of Chinese Academy of Sciences, Beijing 100049, China
- Author bio：
  
  **Tao Tang (唐涛), E-mail: ttang@ciac.ac.cn
- Funds：
- DOI：10.1007/s10118-014-1404-2
  CLC：
- Received：22 May 2013，
  
  Revised：2013-07-27，
  
  Accepted：23 August 2013，
  
  Published：2014-03
- Accepted：
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Lu Wang, Zhi-wei Jiang, Feng Liu, et al. Effects of Branches on the Crystallization Kinetics of Polypropylene-g-Polystyrene and Polypropylene-g-Poly(n-butyl acrylate) Graft Copolymers with Well-defined Molecular Structures[J]. Chinese Journal of Polymer Science, 2014, 32(3): 333-349. DOI: 10.1007/s10118-014-1404-2.
DOI：

Lu Wang, Zhi-wei Jiang, Feng Liu, et al. Effects of Branches on the Crystallization Kinetics of Polypropylene-g-Polystyrene and Polypropylene-g-Poly(n-butyl acrylate) Graft Copolymers with Well-defined Molecular Structures[J]. Chinese Journal of Polymer Science, 2014, 32(3): 333-349. DOI: 10.1007/s10118-014-1404-2. DOI：

摘要

Abstract

Effects of branches on the crystallization kinetics of polypropylene-

-polystyrene (PP-

-PS) and polypropylene-gpoly (

-butyl acrylate) (PP-

-P

BA) graft copolymers with well-defined molecular structures were systematically investigated by DSC. The Avrami equation was used to analyze the isothermal crystallization process

while the analysis of nonisothermal crystallization process was based on the Jeziorny-modified Avrami model and Mo model. The kinetics results of isothermal and nonisothermal crystallization verified the peculiar effects of branches on the crystallization process of PP backbones in PP-

-PS and PP-

-P

BA graft copolymers: on one hand

the interaction between branches (π-π interaction between PS branches

or dipole-dipole interaction between PnBA branches) restrained the mobility and reptation ability of the PP backbones

which hindered the crystallization process; on the other hand

the heterogeneous nucleation effect resulting from the branched structure and fluctuation-assisted nucleation mechanism (caused by microphase separation between the PS or P

BA rich phase and the PP rich phase) became more pronounced with increasing branch length

which facilitated the crystallization process.

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⁰

Effects of Branches on the Crystallization Kinetics of Polypropylene-g-Polystyrene and Polypropylene-g-Poly(n-butyl acrylate) Graft Copolymers with Well-defined Molecular Structures

DOI：10.1007/s10118-014-1404-2

摘要

Abstract

关键词

Keywords

references