聚乙烯醇序列结构的^(13)C NMR测定  

13 C NMR Measurement of the Sequence Structure for PVA

作　　者：褚庆辉[1] 刘宇[1] 马波[1] 

机构地区：[1]抚顺石油学院

出　　处：《辽宁化工》1997年第2期113-114,共2页Liaoning Chemical Industry

摘　　要：根据不同结构单元主链ＣＨ２化学位移和峰强度的不同，采用二单元组定量计算方法，分别计算不同聚乙烯醇（ＰＶＡ）样品的一单元和二单元结构相对含量及各结构单元的数均序列长度和嵌段含量，并详细给出了残留乙酰基的序列分布。According to the contribution of main chain CH 2 units to the peaks, many sequence structural data, including the concentration of diads, monomer units and their blocks and the number average sequence lengths of each monomer unit, were cal culated form the equations for diad concentrations in terms of peak intensity. Furthermore, the sequence distribution of residual acetoxy were determined in detail.

关 键 词：聚乙烯醇 NMR 波谱 序列分布 

分 类 号：O632.31[理学—高分子化学]