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环氧乙烷-环氧丙烷无规共聚醚链结构的核磁共振研究
引用本文:周子南,高林,孙克时,景凤英,吴盛容,方天如.环氧乙烷-环氧丙烷无规共聚醚链结构的核磁共振研究[J].分析化学,1991,19(9):1015-1019.
作者姓名:周子南  高林  孙克时  景凤英  吴盛容  方天如
作者单位:中国科学院长春应用化学研究所,中国科学院长春应用化学研究所,中国科学院长春应用化学研究所,中国科学院长春应用化学研究所,中国科学院长春应用化学研究所,中国科学院长春应用化学研究所 长春,130022,长春,130022,长春,130022,长春,130022,长春,130022,长春,130022
摘    要:本文用NMR波谱方法研究了无规共聚醚(EPO)的链结构。首先对EPO的~1H和~(13)CNMR谱进行了讨论。并从序列结构随环氧丙烷(PO)含量的改变,分析了EPO的二元组序列和三元组序列结构,从~(13)C实验谱中归纳出EPO的取代基参数(SCS),清楚地揭示了EPO的~(13)C谱,SCS参数和序列结构之间的关系,在此基础上计算了EPO系列共聚物的序列分布和数均序列长度。

关 键 词:核磁共振  无规共聚醚  链结构  取代基效应方法

Nuclear Magnetic Resonance Spectroscopy of the Chain Structure of Ethlene Oxide/Propylene Oxide Random Copolyether
Zhou Zinan Gao Lin Sun Keshi Jing Fengying Wu Shengrong Fang Tianru.Nuclear Magnetic Resonance Spectroscopy of the Chain Structure of Ethlene Oxide/Propylene Oxide Random Copolyether[J].Chinese Journal of Analytical Chemistry,1991,19(9):1015-1019.
Authors:Zhou Zinan Gao Lin Sun Keshi Jing Fengying Wu Shengrong Fang Tianru
Institution:Zhou Zinan~* Gao Lin Sun Keshi Jing Fengying Wu Shengrong Fang Tianru
Abstract:The chain struture of ethylene oxide/propylene oxide random copolyothers(EPC) is investigated by nuclear magnetic resonance(NMR). The 1~H NMR and (13)~C NMR spcetra of EPO are assigned, and the diads and triads of EPO are analyzed based on the change of sequence structure with the content of PO. The parameters of substituent chemical shift (SCS)of EPO are obtained from the (13)~C spectra. The relationship among the (13)~C spectra, SCS parameters and sequence structure of EPO are revealed clearly. According to this relationship, the sequence distribution and number average sequence length of ethylene oxide and propylene oxide segments are calculated.
Keywords:Nuclear magnotic resonance  Random copolyother  Chain structure  Substituont Chomical shift
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