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通过1H{13C}NM R、1H-1H COSY、13C-1H HSQC和13C-1H HM BC一维和二维核磁实验分析氢化苯乙烯/异戊二烯共聚物(HS IP)的微观结构。一维核磁实验1H{13C}NM R提供了HS IP的基本结构信息;通过1H-1H COSY实验确定同核H之间的耦合关系,明确了H的化学环境;13C-1H HSQC确定异核13C-1H的单键相关性,明确了直接相连接的C-H化学位移;13C-1H HM BC确定异核碳氢原子的远程相关性(2—3键),验证化学位移归属的正确性和微结构的存在性。
The microstructure of the hydrogenated styrene / isoprene copolymer (HS IP) was analyzed by 1H {13C} NMR, 1H-1H COZY, 13C-1H HSQC and 13C-1H HM BC one- and two-dimensional NMR experiments. One-dimensional NMR 1H {13C} NM R provides the basic structural information of HS IP; the coupling relationship between two nuclei H is confirmed by 1H-1H COZY experiment, and the chemical environment of H is clear; 13C-1H HSQC confirms that the heteronuclear 13C -1H. The 13C-1H HM BC confirms the remote correlation of heteronuclear carbon atoms (2-3 bonds) and verifies the correctness of the chemical shifts and the microstructure The existence of.