Citation: XIE Demin, SUN Qing. STUDY ON SEQUENCE DISTRIBUTION OF 3, 4-POLYISOPRENE BY13C-NMR[J]. Chinese Journal of Polymer Science, ;1987, 5(2): 114-119. shu

STUDY ON SEQUENCE DISTRIBUTION OF 3, 4-POLYISOPRENE BY13C-NMR

XIE Demin ,
SUN Qing

Received Date: 5 August 1985

Isoprene can be plymerized with Fe(acac)3-phen-AlEt3 catalyst system into a polymer mainly containg 3, 4-unit and capable of crystallizing to some extent. The13C-NMR spectra of 3, 4-polyisoprene synthesized: with Fe-catalyst system were investigated, and the: sequence distribution of cis-1, 4, trons-1, 4 and 3, 4-units and the amount of head-to-head and tail-to-tail linkages of 1, 4 and 3, 4-units were discussed. Results showed that the contents of cis-1, 4, trons-1, 4 and 3, 4-unit calculated from different carbon types were satis factorily identical,indicating correct assignments of these peaks.
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