高等学校化学学报

高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (7): 1102.

• 研究简报 • 上一篇    

对甲基酚醛树脂热裂解产物的固体13CNMR

谢德民, 张建国, 王存国, 王荣顺   

  1. 东北师范大学化学系, 长春, 130024
  • 收稿日期:1993-07-07 修回日期:1993-12-12 出版日期:1994-07-24 发布日期:1994-07-24
  • 通讯作者: 谢德民,男,54岁,教授.
  • 作者简介:谢德民,男,54岁,教授.
  • 基金资助:

    国家自然科学基金

Solid-State 13C NMR Study of Pyrolytic Materials of Para-Cresol-formaldehyde Resin

XIE De-Min, ZHANG Jian-Guo, WANG Cun-Guo, WANG Rong-Shun   

  1. Department of Chemistry, Northeast Normal University, Changchun, 130024
  • Received:1993-07-07 Revised:1993-12-12 Online:1994-07-24 Published:1994-07-24

PDF (PC)

关键词: 对甲基酚醛树脂, 裂解, 固体13C, NMR

Abstract: 13C high-resolution solid-state NMRstudy has been performed with respect to polyacenic materials which were prepared by pyrolytic treatment of para-cresol-formaldehyde resin at different temperatures, The results show that with the increase of pyrolysis temperature, as the reaction of intermolecular dehydration and intramolecular dehydrogenation take place, a greater condensed aromatic ring is formed, so the chemical shifts exhibit an up-field shift.When the pyrolytic temperature reaches 900-1100℃, the main peak is composed of a group spectral lines continuously.This change can not be a chemical shift, it seems to be a Knight shift.

Key words: Para-cresol-formaldehyde resin, Pyrolysis, Solid-state 13C NMR

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