Chinese Journal of Magnetic Resonance ›› 2010, Vol. 27 ›› Issue (1): 32-38.

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13C NMR Study of Linear-Hyperbranched Block Polyethylene

  

  1. 1.State Key Laboratory of Chemical Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China; 2.Department of Chemistry and Chemical Engineering, Hunan University of Arts and Science, Changde 415000, China
  • Received:2009-12-15 Published:2010-03-05 Online:2010-03-05

Abstract:

The linear-hyperbranched block polyethylene (LHBPE) is a new class  of polymer with useful combinations of amorphous and crystalline segments. This LHBPE could be prepared  via ethylene polymerization catalyzed by α-diimine nickel complex/ansa-ethylene bis-(1-η5-indenyl)-zirconium dichloride/methylaluminoxane (MAO) in the presence of chain transfer agent. Herein, a 13C NMR study of the LHBPEs is presented. Short branches such as methyl, ethyl, propyl, butyl and amyl  were assigned and quantified.

Key words: 13C NMR, linear-hyperbranched block polyethylene, amorphous segment, crystalline segment

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