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测定了溶胀的PPU/PSAB 交联聚合物中链段和侧基的13CT1和NOE ,用VJGM模型和三等价位跃迁内旋转、扩散内旋转以及等价、不等价两位置跃迁内旋转模型分析了其中的主链链段运动和侧基内旋转运动 ,求出了主链和侧基的运动相关时间、扩散系数和活化能等参数 .结果表明PS含量对PPU运动的影响极小 ,PS主链运动活化能与PPU含量存在线性关系 .丙烯酸与苯乙烯共聚对PPU的运动几乎无影响
The 13CT1 and NOE of segments and side groups in the swollen PPU / PSAB cross-linked polymer were measured. Using the VJGM model and three-level transition internal rotation, internal diffusion rotation and equivalent, unequal two-position transition internal rotation model analysis The kinematic time, the diffusion coefficient, the activation energy and other parameters of the main chain and the side groups were calculated.The results showed that the influence of PS content on the movement of PPU was very little, There was a linear relationship between the kinetic activation energy and the content of PPU.The copolymerization of acrylic acid and styrene had almost no effect on the movement of PPU