ICCAS OpenIR
Effect of temperature on C-13-NMR spectra of poly(phenyl glycidyl ethers)
Xu, JJ; Hou, KY; Li, LP; Yu, ZH
2001-10-01
Source PublicationACTA POLYMERICA SINICA
ISSN1000-3304
Issue5Pages:694-696
AbstractThe solubility of poly(phenyl glycidyl ether) s (PPGEs) depends on the stereoregularity. Different solvents and temperatures ( CDCl3/300 K or TCE-d(2)/350 K) were used in C-13-NMR characterization of these polymers. It was necessary to investigate first the effect of temperature on the C-13-NMR spectra of PPGEs. It was. found that all the C-13-NMR signals of PPGE were shifted to the lower magnetic field with the increase of the temperature. The temperature sensitivity of the C-13-NMR chemical shifts for different carbon atoms was different. The pendent CH2 group was most sensitive to the temperature. The change of the C-13-NMR chemical shift for the pendent CH2 group was mainly caused by the temperature change, and the effects of the solvent kind and the stereoregularity of the polymer were of minor importance. The change of temperature did not make any significant influence on the result of the stereoregularity calculation according to the C-13-NMR spectra for PPGEs. Utilizing the different temperature-sensitivity of C-13-NMR signals for different groups, it is possible to separate the overlapped signals by choosing an appropriate temperature. This method was found especially useful in the C-13-NMR characterization of complex polymer samples.
KeywordC-13-nmr Poly(Phenyl Glycidyl Ether) Recording Temperature
Indexed BySCI
Language英语
WOS IDWOS:000171853600029
PublisherSCIENCE PRESS
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Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/77852
Collection中国科学院化学研究所
Corresponding AuthorXu, JJ
AffiliationChinese Acad Sci, Ctr Mol Sci, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Xu, JJ,Hou, KY,Li, LP,et al. Effect of temperature on C-13-NMR spectra of poly(phenyl glycidyl ethers)[J]. ACTA POLYMERICA SINICA,2001(5):694-696.
APA Xu, JJ,Hou, KY,Li, LP,&Yu, ZH.(2001).Effect of temperature on C-13-NMR spectra of poly(phenyl glycidyl ethers).ACTA POLYMERICA SINICA(5),694-696.
MLA Xu, JJ,et al."Effect of temperature on C-13-NMR spectra of poly(phenyl glycidyl ethers)".ACTA POLYMERICA SINICA .5(2001):694-696.
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