Isotactic Polypropylene Toughened by Polybutene-based Elastomers

LIU Chao; MA Zhe; PAN Li; LI Yue-sheng

doi:10.14028/j.cnki.1003-3726.2024.24.138

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Isotactic Polypropylene Toughened by Polybutene-based Elastomers

更新时间：2024-09-24

- Isotactic Polypropylene Toughened by Polybutene-based Elastomers
- Polymer Bulletin Vol. 37, Issue 10, Pages: 1448-1458(2024)
- 作者机构：
  
  天津大学材料科学与工程学院，天津　 300350
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2024.24.138
  CLC：
- Published：20 October 2024，
  
  Published Online：04 July 2024，
  
  Received：07 May 2024，
  
  Accepted：06 June 2024
- 稿件说明：
移动端阅览
刘超, 马哲, 潘莉, 李悦生. 共聚丁烯弹性体增韧等规聚丙烯. 高分子通报, 2024, 37(10), 1448–1458

Liu, C.; Ma, Z.; Pan, L.; Li, Y. S. Isotactic polypropylene toughened by polybutene-based elastomers. Polym. Bull. (in Chinese), 2024, 37(10), 1448–1458
刘超, 马哲, 潘莉, 李悦生. 共聚丁烯弹性体增韧等规聚丙烯. 高分子通报, 2024, 37(10), 1448–1458 DOI： 10.14028/j.cnki.1003-3726.2024.24.138.

Liu, C.; Ma, Z.; Pan, L.; Li, Y. S. Isotactic polypropylene toughened by polybutene-based elastomers. Polym. Bull. (in Chinese), 2024, 37(10), 1448–1458 DOI： 10.14028/j.cnki.1003-3726.2024.24.138.

摘要

本文利用吡啶亚胺铪/Ph

CB(C

)

催化丁烯与十二烯(C12)、十六烯(C16)、二十烯(C20)无规共聚，合成了一系列侧链长度不同的聚丁烯弹性体(PBE)，其最高断裂伸长率和最高弹性恢复率可分别达5 000%和88.9%。采用熔融共混法制备了等规聚丙烯(

PP)/PBE共混物，详细研究了PBE添加量、侧链长度和共聚单体插入率对

PP/PBE共混物韧性作用的影响。与纯

PP相比，加入5 wt%共聚单元为C16、插入率为52.3%的聚丁烯弹性体PBE-C16(52.3)，可将材料断裂伸长率增加8倍、抗冲强度提高2倍。PBE高弹性恢复能力及其在

PP基体中较小的分散相尺寸有利于提高共混物的韧性。该工作为制备高韧性的聚丙烯合金提供了一种简便有效的方法。

Abstract

A series of long-chain branching polybutene-based elastomers (PBEs) were successfully prepared by incorporating distinct comonomers of 1-dodecene (C12)

1-hexadecene (C16)

and 1-icosaene (C20). The improved elongation

at break of PBE could exceed 5 000%

and the best elastic recovery of PBE reached 88.9%. Moreover

PBEs were blended with isotactic polypropylene (

PP) to improve the material toughness. The effects of additional

side chain length

and comonomer incorporation of PBEs on the toughening effect were systematically studied. The results showed that for PBE-C16(52.3) incorporated 52.3 mol% 1-hexadecene comonomers

the addition of 5 wt% PBE increased the elongation at break of

PP blend by more than 8 times to 900% and its impact strength increased by 2 times to 15.3 kJ/m

. The high elastic recovery of PBE and its small dispersed phase size are beneficial to the improvement on toughness of the

PP blend material. This work provides a simple and effective method for obtaining

PP blend material with the improved toughness.

关键词

聚丁烯弹性体长链支化聚丙烯增韧

Keywords

Polybutene elastomersLong-chain branchingPolypropylene toughening

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