摘要
A series of ethylene\|vinyl alcohol copolymers (EVOH) with different comonomer contents were studied by both solution state and solid\|state high\|resolution 13 C NMR spectroscopy. A new assignment of 13 C CP/MAS spectrum of EVOH was given. It was demonstrated that the triple splitting of the signal of methine carbon of the vinyl alcohol unit in 13 C CP/MAS spectrum is caused by sequence distribution,tacticity and intra and inter molecular hydrogen\|bonding interactions.
A series of ethylene\|vinyl alcohol copolymers (EVOH) with different comonomer contents were studied by both solution state and solid\|state high\|resolution 13 C NMR spectroscopy. A new assignment of 13 C CP/MAS spectrum of EVOH was given. It was demonstrated that the triple splitting of the signal of methine carbon of the vinyl alcohol unit in 13 C CP/MAS spectrum is caused by sequence distribution,tacticity and intra and inter molecular hydrogen\|bonding interactions.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2000年第6期800-804,共5页
Acta Polymerica Sinica
基金
国家教委跨世纪人才基金
上海市科委启明星计划的支持
关键词
乙烯
乙烯醇
共聚物
链结构
固体高分辨核磁共振
Ethylene\|vinyl alcohol copolymer, Hydrogen\|bonding interaction, NMR, Chain structure
