Synthesis and Rheological Investigation of Model Symmetric 3-Arm Star Polyethylene

Feng Liu; Dong Wan; Tao Tang

doi:10.1007/s10118-014-1370-8

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Synthesis and Rheological Investigation of Model Symmetric 3-Arm Star Polyethylene

Updated：2021-06-21

- Synthesis and Rheological Investigation of Model Symmetric 3-Arm Star Polyethylene
- Chinese Journal of Polymer Science Vol. 32, Issue 1, Pages: 51-63(2014)
- Affiliations：
  
  a.State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  b.Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
- Author bio：
  
  *Tao Tang (唐涛), E-mail: ttang@ciac.jl.cn
- Funds：
- DOI：10.1007/s10118-014-1370-8
  CLC：
- Received：04 February 2013，
  
  Revised：2013-04-09，
  
  Accepted：19 April 2013，
  
  Published：2014-01
- Accepted：
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Feng Liu, Dong Wan, Tao Tang. Synthesis and Rheological Investigation of Model Symmetric 3-Arm Star Polyethylene[J]. Chinese Journal of Polymer Science, 2014, 32(1): 51-63.
DOI：

Feng Liu, Dong Wan, Tao Tang. Synthesis and Rheological Investigation of Model Symmetric 3-Arm Star Polyethylene[J]. Chinese Journal of Polymer Science, 2014, 32(1): 51-63. DOI： 10.1007/s10118-014-1370-8.

摘要

Abstract

A variety of linear and 3-arm star polyethylene (PE) model polymers covering a wide range of molecular weight are synthesized by the living polymerization of butadiene and the subsequent hydrogenation. Several rheological parameters of these model linear and 3-arm star PE samples are analyzed for detecting the long chain branching (LCB) structure. It is found that the analyses based on zero shear viscosity

vGP plot and flow activation energy are very sensitive to the 3-arm star PEs. The information on the presence of LCB can be obtained with these methods even for low molecular weight samples

which can not be determined by GPC-MALLS. However the information about the LCB structure can not be obtained by the rheological methods alone.

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