聚合物侧基的运动相关函数和侧基运动

The correlation function and the side group motion of polymer

根据模型推导了主链运动忽略不计时的侧基多重内旋转运动的相关函数和谱密度函数 ,并用 NMR研究了离聚体乳胶 IPN( Io-LIPN)中 Pn BA侧基的 13C自旋 -晶格弛豫时间 T1.对测得的 T1进行了拟合 .结果表明离主链越远 。

The correlation function and corresponding spectral density functions of the internal rotation and multiple internal rotation are deduced under the condition of the contribution of the main chain being neglected. The values of 13 C T 1 and line width of butyl side chain of poly n butyl acrylate in ionomer latex interpenetrating polymer network (Io LIPN) are measured on BRUKER MSL 400 spectrometer under normal condition. The results of data simulation show that the more the side group departs from the main chain, the faster the motion is.