摘要
用核磁共振 (NMR)法分析了 VDF/ CTFE(1∶ 4)共聚物1H、13 C的化学位移和链节中特征碳原子的链段结构。并从量子化学角度计算了参与反应的两种单体 (偏二氟乙烯和三氟氯乙烯 )的竞聚率 ,讨论了该共聚物具有无序的链节序列分布特征 ,结果表明 ,不同溶解性的该共聚物 。
The nucleus magnetism resonance (NMR) method was used in investigating the reson ances of 1H and 13 C in the chains and the chai n structure of different characteristic carbons in the molecular chains of VDF/C TFE(1∶4) copolymer. And the competitive polymerization rates of VDF and CTFE mo nomers that attend the copolymerization reaction was calculated with the quantum chemistry theory. The analytic results seem that VDF/CTFE(1∶4) copolymer is a irregular one. The different soluble portion of the copolymer has different repe ated units chain structure.
出处
《火炸药学报》
CAS
CSCD
2001年第4期31-33,共3页
Chinese Journal of Explosives & Propellants
基金
中国工程物理研究院科学技术基金资助项目 (2 0 0 0 0 5 5 4)
