Effect of Olefin-based Compatibilizers on the Formation of Cocontinuous Structure in Immiscible HDPE/<italic style="font-style: italic">i</italic>PP Blends

Fei Yang; Li Pan; Hui-Zhen Du; Zhe Ma; Yue-Sheng Li

doi:10.1007/s10118-020-2433-7

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Effect of Olefin-based Compatibilizers on the Formation of Cocontinuous Structure in Immiscible HDPE/iPP Blends

ARTICLE | Updated：2020-06-19

- Effect of Olefin-based Compatibilizers on the Formation of Cocontinuous Structure in Immiscible HDPE/iPP Blends
- Chinese Journal of Polymer Science Vol. 38, Issue 11, Pages: 1248-1257(2020)
- Affiliations：
  
  a.Tianjin Key Laboratory of Composite and Functional Materials, and School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
  b.Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
- Author bio：
  
  zhe.ma@tju.edu.cn (Z.M.)
  ysli@tju.edu.cn (Y.S.L.)
- Funds：
- DOI：10.1007/s10118-020-2433-7
  CLC：
- Received：31 January 2020，
  
  Revised：2020-3-23，
  
  Accepted：24 March 2020，
  
  Online First：19 June 2020，
  
  Published：14 August 2020
- Accepted：
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Yang, F.; Pan, L.; Du, H. Z.; Ma, Z.; Li, Y. S. Effect of olefin-based compatibilizers on the formation of cocontinuous structure in immiscible HDPE/, i,PP blends. Chinese J. Polym. Sci. 2020, 38, 1248–1257

Fei Yang, Li Pan, Hui-Zhen Du, et al. Effect of Olefin-based Compatibilizers on the Formation of Cocontinuous Structure in Immiscible HDPE/iPP Blends[J]. Chinese Journal of Polymer Science, 2020, 38(11): 1248-1257. DOI: 10.1007/s10118-020-2433-7.
Yang, F.; Pan, L.; Du, H. Z.; Ma, Z.; Li, Y. S. Effect of olefin-based compatibilizers on the formation of cocontinuous structure in immiscible HDPE/, i,PP blends. Chinese J. Polym. Sci. 2020, 38, 1248–1257 DOI： 10.1007/s10118-020-2433-7.

Fei Yang, Li Pan, Hui-Zhen Du, et al. Effect of Olefin-based Compatibilizers on the Formation of Cocontinuous Structure in Immiscible HDPE/iPP Blends[J]. Chinese Journal of Polymer Science, 2020, 38(11): 1248-1257. DOI: 10.1007/s10118-020-2433-7. DOI：

摘要

Abstract

In this work

the formation of cocontinuous structure in immiscible high density polyethylene/isotactic polypropylene (HDPE/

PP) blends was investigated for various olefin-based compatibilizers of distinct molecular architectures

including ternary random copolymer EPDM

olefin block copolymer (OBC)

polypropylene-based OBC (PP-OBC)

ethylene/

-olefin copolymer (POE)

bottlebrush polymer poly(1-dodecene)

and comb-like poly(propylene-

-high

-olefin) (PPO). The scanning electron microscopy results show that after adding OBC

PP-OBC

and POE copolymers

the finer droplet-in-matrix morphologies were obtained in 70/30 HDPE/

PP blend. Interestingly

for 70/30 HDPE/

PP blend with just 5 wt% of PPO copolymers

the phase inversion from droplet-in-matrix to cocontinuous morphology can be observed. It was proposed that the development of cocontinuous morphology contained the following steps: (1) interfacial saturation of compatibilizers and droplet deformation

(2) droplet-droplet coalescence

(3) continuity development

and (4) the formation of dual-phase continuity. Among the diverse copolymers studied in this work

PPO copolymer can be easily removed out of the interface during droplet coalescence and stabilize the curvature of minor fiber phase

facilitating the formation of cocontinuous morphology. In contrast

other olefin-based compatibilizers (EPDM

OBC

PP-OBC

and POE) exhibit the distinct steric repulsion effect to prohibit droplet coalescence. Moreover

the cocontinous interval varies with the compatibilizer architectures. Surprisingly

after adding 10 wt% of PPO copolymers

the cocontinuous interval was greatly broadened from HDPE/

PP range of 45/55−60/40 to that of 40/60−70/30.

关键词

Keywords

references

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Effect of Olefin-based Compatibilizers on the Formation of Cocontinuous Structure in Immiscible HDPE/iPP Blends

DOI：10.1007/s10118-020-2433-7

摘要

Abstract

关键词

Keywords

references