摘要
本文采用Cole-Cole,Fuoss-Kirkwood经验相关时间分布模型和构象跳跃,高聚物局部主链运动阻尼取向扩散分子模型,对1,2-聚丁二烯在溶液中的^(13)C-NMR自旋-晶格弛豫时间nT_1和核Overhauser效应(NOE)值进行了数值拟合。用拟合所得分子运动参数讨论了1,2-聚丁二烯微观分子运动对链结构和温度的依赖性。
The empirical Cole-Cole, Fuoss-KirkwOod distribution models of correlation times, the con-formational jump model proposed by Valeur et al. and the damped orientational diffusion model of polymer local main-chain motion proposed by Skolnick and Yaris were used to fit the experimental 13C-NMR spin-lattice relaxation times (T1) and nuclear Overhauser effect (NOE) data of 1,2-polybutadienes in CDCL3 solution. The dependences of the malecular motion of 1,2-PBD on the chain-structure ad temperature have been discussed in terms of the model parameters obtained.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1990年第5期580-585,共6页
Acta Polymerica Sinica
基金
国家自然科学基金
关键词
聚丁二烯
分子运动
模型拟合法
1,2-Polybutadiene, Model fitting method 13C-NMR, Spinlattice relaxation time (T1), Nuclear Overhauser effect (NOE).
