Regioselective Polymerizations of <italic style="font-style: italic">α</italic>-Olefins with an <italic style="font-style: italic">α</italic>-Diamine Nickel Catalyst

Heng Liao; Jie Gao; Liu Zhong; Hai-Yang Gao; Qing Wu

doi:10.1007/s10118-019-2227-y

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Regioselective Polymerizations of α-Olefins with an α-Diamine Nickel Catalyst

ARTICLE | Updated：2021-02-18

- Regioselective Polymerizations of α-Olefins with an α-Diamine Nickel Catalyst
- Chinese Journal of Polymer Science Vol. 37, Issue 10, Pages: 959-965(2019)
- Affiliations：
  
  School of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-sen University, Guangzhou 510275, China
- Author bio：
  
  gaohy@mail.sysu.edu.cn
- Funds：
- DOI：10.1007/s10118-019-2227-y
  CLC：
- Received：06 December 2018，
  
  Revised：2019-1-1，
  
  Accepted：21 January 2019，
  
  Online First：25 February 2019，
  
  Published：2019-10
- Accepted：
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Liao, H.; Gao, J.; Zhong, L.; Gao, H. Y.; Wu, Q. Regioselective polymerizations of α-olefins with an α-diamine nickel catalyst. Chinese J. Polym. Sci. 2019, 37, 959–965.

Heng Liao, Jie Gao, Liu Zhong, et al. Regioselective Polymerizations of α-Olefins with an α-Diamine Nickel Catalyst[J]. Chinese Journal of Polymer Science, 2019, 37(10): 959-965. DOI: 10.1007/s10118-019-2227-y.
Liao, H.; Gao, J.; Zhong, L.; Gao, H. Y.; Wu, Q. Regioselective polymerizations of α-olefins with an α-diamine nickel catalyst. Chinese J. Polym. Sci. 2019, 37, 959–965. DOI： 10.1007/s10118-019-2227-y.

Heng Liao, Jie Gao, Liu Zhong, et al. Regioselective Polymerizations of α-Olefins with an α-Diamine Nickel Catalyst[J]. Chinese Journal of Polymer Science, 2019, 37(10): 959-965. DOI: 10.1007/s10118-019-2227-y. DOI：

摘要

Abstract

Polymerizations of linear

-olefins (C

＝CH―R

R = C

−2

) catalyzed by early transition metals typically afford amorphous polymers with alkyl chains (C

−2

)

while chain-straightening polymerizations of

-olefins with nickel-based catalysts produce semicrystalline polyolefins. Polymerizations of various

-olefins were carried out using an

-diamine nickel catalyst with a significantly distorted chelating ring. The influences of temperature

monomer concentration

and chain length of

-olefins on polyolefin microstructure were examined in detail. The

-diamine nickel catalyst realized highly regioselective 2

1-insertion of

-olefins regardless of reaction temperature and monomer concentration. Increased chain length of

-olefins led to the formation of more linear polyolefin. Semicrystalline polyolefins with high melting temperatures (

) were made from

-olefins through highly regioselective 2

1-insertion and precise chain-straightening.

关键词

Keywords

references

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Regioselective Polymerizations of α-Olefins with an α-Diamine Nickel Catalyst

DOI：10.1007/s10118-019-2227-y

摘要

Abstract

关键词

Keywords

references