高等学校化学学报

高等学校化学学报 ›› 1987, Vol. 8 ›› Issue (12): 1127.

• 论文 • 上一篇    下一篇

用13CNMR研究星形聚苯乙烯溶液的分子运动(Ⅰ)

汪健, 华士英, 李瑛, 裘祖文, 沈家骢   

  1. 吉林大学化学系、理论化学研究所
  • 收稿日期:1986-04-18 出版日期:1987-12-24 发布日期:1987-12-24
  • 基金资助:

    中国科学院科学基金

Molecular Motion of Star-Shaped Polystyrenes in Solution Studied by Carbon-13 NMR(Ⅰ)

Wang Han, Hua Shiying, Li Ying, Qiu Zuwen, Shen Jiacong   

  1. Chemiatry Department, Institute of Theoretical Chemistry, Jilin University, Changchun
  • Received:1986-04-18 Online:1987-12-24 Published:1987-12-24

PDF (PC)

摘要： 用VarianFT-80ANMR谱仪,对结构规则的星形聚苯乙烯在d4-邻二氯苯和CDCl3溶液中的13CNMR自旋-晶格弛豫时间、线宽和NOE进行了测定。研究了分子量、浓度、溶剂和分子结构对弛豫的影响,并用相关时间的log-X2分布函数模型解释了实验数据。

Abstract: The carbon-13 NMR spin lattice relaxation times,line widths and Nuclear Over-hauscr Enhancements were measured for solutions of regular star-shaped polystyrenes in o-dichlorobenzene and in CDCl3. The factors, molecular weight, concentration, solvent and molecular structure,which control magnetic relaxation, were examined. The experimental data were interpreted in terms of the log-X2distribution of correlation times

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