Copolymerization of Propene and 4-Methyl-1-pentene Catalyzed by Pyridylamido Hafnium Catalyst

Hao-tian Zhou; Chun-yu Feng; Ming-zhe Wang; Zhao-peng Luo; Heng Gao; Han-dou Zheng; Hai-yang Gao

doi:10.11777/j.issn1000-3304.2026.26159

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Copolymerization of Propene and 4-Methyl-1-pentene Catalyzed by Pyridylamido Hafnium Catalyst

更新时间：2026-08-04

- Copolymerization of Propene and 4-Methyl-1-pentene Catalyzed by Pyridylamido Hafnium Catalyst
- Acta Polymerica Sinica Pages: 1-8(2026)
- 作者机构：
  
  中山大学材料科学与工程学院聚合物复合材料及功能材料教育部重点实验室广州 510006
- 作者简介：
  
  Hai-yang Gao, E-mail: gaohy@mail.sysu.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2026.26159
  CLC：
- CSTR：32057.14.GFZXB.2026.7648
- Received：07 May 2026，
  
  Accepted：26 May 2026，
  
  Online First：04 August 2026，
- 稿件说明：
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周浩添, 冯春玉, 王铭哲, 罗召鹏, 高恒, 郑涵斗, 高海洋. 吡啶胺基铪催化丙烯与4-甲基-1-戊烯共聚研究. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.26159.

Zhou, H. T.; Feng, C. Y.; Wang, M. Z.; Luo, Z. P.; Gao, H.; Zheng, H. D.; Gao, H. Y. Copolymerization of propene and 4-methyl-1-pentene catalyzed by pyridylamido hafnium catalyst. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.26159.
周浩添, 冯春玉, 王铭哲, 罗召鹏, 高恒, 郑涵斗, 高海洋. 吡啶胺基铪催化丙烯与4-甲基-1-戊烯共聚研究. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.26159. DOI： CSTR： 32057.14.GFZXB.2026.7648.

Zhou, H. T.; Feng, C. Y.; Wang, M. Z.; Luo, Z. P.; Gao, H.; Zheng, H. D.; Gao, H. Y. Copolymerization of propene and 4-methyl-1-pentene catalyzed by pyridylamido hafnium catalyst. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.26159. DOI： CSTR： 32057.14.GFZXB.2026.7648.

摘要

共聚物的单体组成及分布对材料的性能及应用有着重要的影响. 本研究采用高等规的非茂吡啶胺基铪催化剂催化丙烯与4-甲基-1-戊烯共聚，详细研究了丙烯/4-甲基-1-戊烯进料比对共聚的影响. 吡啶胺基铪催化剂表现出很高的共聚活性，达到3.55×10

polymer

·mol

-1

·h

-1

. 通过调控单体进料比，成功制备了一系列不同单体组成的丙烯-4-甲基-1-戊烯的高等规共聚物. 核磁共振碳谱(

C-NMR)、X射线衍射谱(XRD)、示差扫描量热分析(DSC)和拉伸测试表明较低的4-甲基-1-戊烯插入率(

7.7 mol%)下制备了4-甲基-1-戊烯改性的聚丙烯，高4-甲基-1-戊烯插入率(

94.6 mol%)下得到丙烯改性的聚(4-甲基-1-戊烯)，介于两者之间的插入率表现为无规共聚弹性体材料. 通过单体的组成调控，成功地实现了材料的性能从塑料到弹性体再到塑料的改变.

Abstract

The composition and distribution of monomers have an important influence on the performance and application of the copolymers. In this study

the copolymerization of propylene and 4-methyl-1-pentene was catalyzed by non-metallocene pyridylamido hafnium catalyst with high stereoselectivity

and the effect of 4-methyl-1-pentene/propylene feed ratio on copolymerization was studied in detail. The pyridylamido hafnium catalyst showed high copolymerization activity

reaching 3.55×10

polymer

·mol

-1

·h

-1

. A series of propylene-4-methyl-1-pentene copolymers with different monomer compositions were successfully prepared. Carbon-13 nuclear magnetic resonance (

C-NMR)

X-ray diffraction (XRD)

differential scanning calorimetry (DSC) and tensile tests showed that 4-methyl-1-pentene modified polypropylene was prepared at a low 4-methyl-1-pentene incorporation (3.4 mol%-7.7 mol%)

and propylene modified poly(4-methyl-1-pentene) was obtained at a high 4-methyl-1-pentene incorporation (94.6 mol%-96.8 mol%). The copolymers with intermediate incorporation (19.7 mol%-77.9 mol%) are random elastomers. By varying the monomer composition

the material's properties were successfully altered from plastic to elastomer and then back to plastic.

关键词

Keywords

references

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