摘要
用FTIR,1H NMR和13C NMR分析乙丙共聚物的序列结构与链节比.通过对乙丙共聚物1H NMR,13C NMR和13C1-H二维核磁共振谱的综合分析,提出了与前人不同的归属,并提出了不同位置碳原子积分面积相关性分析方法,该方法避免了烦琐的理论计算,可简便地得到乙丙共聚物的主要序列结构.通过比较1H NMR和13C NMR计算乙丙共聚物中乙烯、丙烯链节比,表明可以用1H NMR代替13C NMR完成对乙丙共聚物中乙烯、丙烯链节比的定量计算.
The sequential structures and monomer unit ratio of ethylene-propylene copolymer（EPC） were analyzed by FTIR, ^1H NMR and ^13C NMR. The spectra of ^1H NMR, ^13C NMR and two-dimensional NMR of EPC were also analyzed in detail, the differential explanations of the NMR spectra for EPC with predecessors, and an analytical method of the relativity of the integrated areas of differential carbon atoms in the inverse gated decoupling ^13C NMR spectrum were proposed in this paper. The proposed method can be used to determine the main sequential structures in EPC simply. The theoretical calculated results of the main sequence distribution for three EPR samples proved that the proposed method is feasible. Compared ^1H NMR with ^13C NMR, it is accepted that ^1H NMR method can be used to calculate the monomer unit ratio of ethylene and propylene in EPC.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第5期961-965,共5页
Chemical Journal of Chinese Universities
基金
中国石油化工集团长城润滑油公司科研基金(批准号:H2004227)资助
关键词
核磁共振谱
红外光谱
乙丙共聚物
序列结构
链节比
NMR spectrum
FTIR spectrum
Ethylene-propylene copolymer
Sequential structure
Monomer unit ratio
