Inquiring into Structure of Hyperbranched Polyethylene Produced in Radical Polymerization Process

Author:

Koval Evgeniy1,Echevskaya Ludmila2,Matsko Mikhail3,Pestryakov Alexey3,Mayer Edward3

Affiliation:

1. Tomskneftekhim Ltd

2. Boreskov Institute of Catalysis

3. Tomsk Polytechnic University

Abstract

This paper presents the analysis of rubberlike hyperbranched polyethylene (PE) deposits in separators and high-pressure (HP) recycle system with use of NMR spectroscopy 13С, X-ray phase analysis and differential scanning calorimetry; polymer extraction separation with boiling o-xylene and comparison of fraction characteristics have been carried out. With literature data and process conditions taken into account the potential reason of such structure polymer synthesis is being under discussion.

Publisher

Trans Tech Publications, Ltd.

Reference11 articles.

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2. I.G. Klimov, E.A. Mayer, A.V. Vlasov, E.O. Koval, R.V. Petrenko, Yu.N. Kondratyev, S.B. Shtamm, Ethylene polymerization method. RF Patent №2447088, dd 10. 04. 2012, priority on 01. 07. (2010).

3. E. Koval, E. Skvortsevitch, E. Mayer, VLDPE Synthesis by Radical Ethylene Polymerization in Tubular Reactors – Negative Factor or Unrealized Opportunities. J. Mater. Sci. and Chem. Eng. 1 (2013) 11-16.

4. J.C. Randall, A Review of High Resolution Liquid 13 Carbon Nuclear Magnetic Resonance Characterizations of Ethylene-Based Polymers. JMS-Rev. Macromol. Chem. Phys. C. 29 (1989) 297-303.

5. A. Polyakov, F. Duntov, А. Sofiev at al. Low density polyethylene. Leningrad: Khimia (1988) 175-178.

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