Structure and Properties of Isotactic Polypropylene/Polybutene-1 In-reactor Alloys

Ya-Ping Ma; Ning Zhang; Wei-Ping Zheng; Ai-Hua He; Chen-Guang Liu

doi:10.1007/s10118-020-2468-9

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Structure and Properties of Isotactic Polypropylene/Polybutene-1 In-reactor Alloys

ARTICLE | Updated：2020-08-24

- Structure and Properties of Isotactic Polypropylene/Polybutene-1 In-reactor Alloys
- Chinese Journal of Polymer Science Vol. 38, Issue 12, Pages: 1382-1391(2020)
- Affiliations：
  
  Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Key Laboratory of Rubber-Plastics (Ministry of Education), School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
- Author bio：
  
  ahhe@qust.edu.cn, aihuahe@iccas.ac.cn (A.H.H.)
  liuchenguang@qust.edu.cn (C.G.L.)
- Funds：
- DOI：10.1007/s10118-020-2468-9
  CLC：
- Received：06 April 2020，
  
  Revised：2020-6-1，
  
  Accepted：12 June 2020，
  
  Online First：24 August 2020，
  
  Published：10 September 2020
- Accepted：
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Ma, Y. P.; Zhang, N.; Zheng, W. P.; He, A. H.; Liu, C. G. Structure and properties of isotactic polypropylene/polybutene-1 in-reactor alloys. Chinese J. Polym. Sci. 2020, 38, 1382–1391

Ya-Ping Ma, Ning Zhang, Wei-Ping Zheng, et al. Structure and Properties of Isotactic Polypropylene/Polybutene-1 In-reactor Alloys[J]. Chinese Journal of Polymer Science, 2020, 38(12): 1382-1391.
Ma, Y. P.; Zhang, N.; Zheng, W. P.; He, A. H.; Liu, C. G. Structure and properties of isotactic polypropylene/polybutene-1 in-reactor alloys. Chinese J. Polym. Sci. 2020, 38, 1382–1391 DOI： 10.1007/s10118-020-2468-9.

Ya-Ping Ma, Ning Zhang, Wei-Ping Zheng, et al. Structure and Properties of Isotactic Polypropylene/Polybutene-1 In-reactor Alloys[J]. Chinese Journal of Polymer Science, 2020, 38(12): 1382-1391. DOI： 10.1007/s10118-020-2468-9.

摘要

Abstract

The composition and structure of polymer largely determine the properties of its final products. As a novel polymer material

the composition

structure

and properties of the isotactic polypropylene/polybutene-1 in-reactor alloy (

PP/

PB alloy) synthesized by sequential two-stage polymerization with Ziegler-Natta catalyst were correlated for the first time in this work. The

PP/

PB alloy was fractionated by temperature rising elution fractionation (TREF) in a broad temperature ranged from –30 °C to 140 °C

and the chain microstructures and sequence distributions of isolated fractions were analyzed by DSC

GPC

C-NMR

and FTIR. The

PP/

PB alloy was composed of five components

namely high isotactic PB (

85.8 wt%)

medium isotactic PB (

5.1 wt%)

poly((butene-1)-block-propylene) copolymers (PB-

-PP

4.1 wt%) which contained PB and PP blocks with different lengths according to the isolation temperature

isotactic PP (

2.7 wt%)

and atactic PB (

2.3 wt%). Compared to other commercial pipe materials

the

PP/

PB alloy presented outstanding thermal creep resistance and gas permeability resistance

high strength and low deformation at high temperature

and appropriate flexural strength. The roles of PP and PB-

-PP components in the alloy were interpreted. This work is expected to elucidate the potential application of

PP/

PB alloy as pipe materials and provide solutions for the design and synthesis of high performance pipe materials.

关键词

Keywords

references

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