Temperature Rising Elution Fractionation and Fractions Characterization of PP/PB-1 in-reactor Alloy

Chen-guang LIU; Ning ZHANG; Ya-ping MA; Ai-hua HE

doi:10.14028/j.cnki.1003-3726.2021.06.012

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Temperature Rising Elution Fractionation and Fractions Characterization of PP/PB-1 in-reactor Alloy

Special Issue: In Celebration of the 80th Birthday of Professor HU You-liang | 更新时间：2022-08-30

- Temperature Rising Elution Fractionation and Fractions Characterization of PP/PB-1 in-reactor Alloy
- Polymer Bulletin Vol. 34, Issue 6, Pages: 122-130(2021)
- 作者机构：
  
  山东省烯烃催化与聚合重点实验室橡塑材料与工程教育部重点实验室高分子科学与工程学院青岛科技大学,青岛266042
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2021.06.012
  CLC：
- Published：20 June 2021，
  
  Received：19 August 2020，
  
  Revised：23 February 2021，
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Chen-guang LIU, Ning ZHANG, Ya-ping MA, Ai-hua HE. Temperature Rising Elution Fractionation and Fractions Characterization of PP/PB-1 in-reactor Alloy. [J]. Polymer Bulletin 34(6):122-130(2021)
DOI：

Chen-guang LIU, Ning ZHANG, Ya-ping MA, Ai-hua HE. Temperature Rising Elution Fractionation and Fractions Characterization of PP/PB-1 in-reactor Alloy. [J]. Polymer Bulletin 34(6):122-130(2021) DOI： 10.14028/j.cnki.1003-3726.2021.06.012.

摘要

基于反应器颗粒技术制备的聚丙烯(PP)/聚丁烯-1(PB-1)釜内合金

其结构与组成

特别是嵌段共聚物级份的组成、分布、链序列结构等受两段聚合条件的影响较大。本文采用溶剂抽提法和升温淋洗分级法

对中试合成的两种PP/PB-1釜内合金进行分级

采用示差扫描量热仪(DSC)、高温核磁碳谱(

C-NMR)、高温凝胶渗透色谱仪(GPC)对各级份进行表征

明确了合金的结构、组成及丁烯-丙烯嵌段共聚物(PB-

-PP)级份链序列结构。研究两种釜内合金的组成与力学性能关系

对于聚合工艺的优化及先进聚烯烃材料的开发提供依据。

Abstract

Preparation of in-reactor polyolefin alloy by Reactor Granule Technology provides an effective method for the design and modification of new polyolefin materials. In this work

two pilot-scale polypropylene (PP)/polybutene-1(PB-1) in-reactor alloys prepared based on reactor granule technology with the two-stage polymerization technology were fractionated with solvent extraction fractionation and temperature rising elution fractionation. By using differential scanning calorimeter (DSC)

high temperature nuclear magnetic carbon spectrum (

C-NMR) and high temperature gel permeation chromatograph (GPC)

the structure and composition

especially the composition and distribution

chain sequence structure and distribution of the PP/PB-1 in-reactor alloy and its fractions were further clarified. The relationship between the composition and properties of two alloys was studied. This study is of great significance for the optimization of polymerization process and the development of advanced polyolefin materials.

关键词

PP/PB-1合金升温淋洗分级共聚物序列结构等规度

Keywords

PP/PB-1 alloyTemperature rising elution fractionationCopolymerSequence structureIsotacticity

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Related Institution

Sinopec Shanghai Petrochemical Company Limited

Advanced Material Laboratory, Fudan University

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

Chambroad Chemical Industry Research Institute Co., Ltd.

School of Science,Tianjin University

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