Preparation of POE/PS Blends with Fine Particle Sizes by Diffusion and Subsequent Polymerization of Styrene in POE Pellets

Wei-jia Wang; Cheng-huan Huang; Zhao-xia Guo; Jian Yu

doi:10.1007/s10118-017-1955-0

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Preparation of POE/PS Blends with Fine Particle Sizes by Diffusion and Subsequent Polymerization of Styrene in POE Pellets

Papers | Updated：2021-02-18

- Preparation of POE/PS Blends with Fine Particle Sizes by Diffusion and Subsequent Polymerization of Styrene in POE Pellets
- Chinese Journal of Polymer Science Vol. 35, Issue 8, Pages: 939-949(2017)
- Affiliations：
  
  Key Laboratory of Advanced Materials(Ministry of Education), Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
- Author bio：
  
  Zhao-xia Guo (郭朝霞), E-mail:guozx@mail.tsinghua.edu.cn
  Jian Yu (于建), E-mail:yujian03@mail.tsinghua.edu.cn
- Funds：
- DOI：10.1007/s10118-017-1955-0
  CLC：
- Received：09 February 2017，
  
  Revised：2017-3-20，
  
  Accepted：22 March 2017，
  
  Published：2017-08
- Accepted：
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Wei-jia Wang, Cheng-huan Huang, Zhao-xia Guo, et al. Preparation of POE/PS Blends with Fine Particle Sizes by Diffusion and Subsequent Polymerization of Styrene in POE Pellets[J]. Chinese Journal of Polymer Science, 2017, 35(8): 939-949.
DOI：

Wei-jia Wang, Cheng-huan Huang, Zhao-xia Guo, et al. Preparation of POE/PS Blends with Fine Particle Sizes by Diffusion and Subsequent Polymerization of Styrene in POE Pellets[J]. Chinese Journal of Polymer Science, 2017, 35(8): 939-949. DOI： 10.1007/s10118-017-1955-0.

摘要

Abstract

Ethylene-

-octene copolymer (POE)/polystyrene (PS) blend pellets with fine particle sizes were prepared by diffusion and subsequent polymerization of styrene in POE pellets through a one-pot procedure. The effects of the amounts of styrene and BPO on PS content

monomer efficiency and monomer conversion were investigated. The blend pellets were characterized by Micro-FTIR and FESEM

showing homogeneous diametrical distributions of PS and particle size. After melt-processing into rods

the average particle sizes are almost doubled

but still in submicron scale. Compared to neat POE rods

the blend rods with PS content higher than 15% exhibit improved tensile modulus and tensile strength without significantly losing ductility

being attributed to the small sizes

complex nature of particles and the existence of POE-

-PS copolymer that result in good interfacial adhesion. POE/PS pellets were compared with the previously reported PP/PS pellets

and the differences between the two systems are attributed to the different morphology of the two matrices:POE is completely amorphous at the diffusion and polymerization temperature

while iPP is semicrystalline. Without efficient impediment of the crystal lamellae in POE pellets

styrene diffuses easily in POE pellets.

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Keywords

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