Chinese Journal of Magnetic Resonance ›› 1996, Vol. 13 ›› Issue (6): 539-546.

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INVESTIGATIONS ON THE MICROSTRUCTURES OF IMPACT POLYPROPYLENES

Lu Fei1, Hong Kunlun1, Zhu Qingren1, Zhang Qijin2, Hu Xuesong2   

  1. 1. Structure Research Laboratory, University of Scienca and Technology of China, Hefei 230026;
    2. Department of Material Science and Engineering. Universily of Scienceand Technology of China, Hefei 2300
  • Received:1996-04-15 Revised:1996-05-22 Published:1996-12-05 Online:2018-01-17

Abstract: The microstructures of impact polypropylenes were investigated by 13C NMR spectroscopy.It was found that the ethylene sequence distributions were different in various impact polypropylenes made through distinctive manufacturing procedures. Isotacticity in the porpylene sequences of these copolymers were determined directly from 13C NMR spectra in methyl region with the aid of methine Peaks.

Key words: Impact polypropylene, 13C NMR, Microstructure