| Evidence of Hydrogen Bonding in Chloroform and Polyacrylates from NMR Measurements |
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| 作者姓名： | 王保国 |
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| 作者单位： | WANG Baoguo，Takeo Yamaguchi ，Shin ichi Nakao Department of Chemical Engineering，Tsinghua University，Beijing 100084，China Department of Chemical System Engineering，the University of Tokyo，Tokyo 113 8656，Japan |
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| 基金项目： | the Foundation for Basic Research ofTsinghua U niversity(No.JC2 0 0 0 0 4 1) |
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| 摘 要： | IntroductionHydrogen bonding in polymer solutions hasattracted particular attention in recent yearsbecause of its importance in the understanding ofintermolecular interactions,which often affectphysical properties of polymer mixtures17] .Studies have indicated that hydrogen bondingaffects the phase equilibrium behavior8] ,e.g.,chloroform shows abnormal thermodynamicproperties in its vapor pressure,as well as in theheat and the volume of mixing with poly( propylene glycol dimethyl ether) 9] …
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Evidence of Hydrogen Bonding in Chloroform and Polyacrylates from NMR Measurements |
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| Takeo Yamaguchi,Shinichi Nakao.Evidence of Hydrogen Bonding in Chloroform and Polyacrylates from NMR Measurements[J].Tsinghua Science and Technology,2002,7(1). |
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| Authors: | Takeo Yamaguchi Shinichi Nakao |
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| Abstract: | The presence of hydrogen bonding in chloroform and polyacrylate mixtures was demonstrated by observation of 1H- and 13C-NMR chemical shifts. Comparison of the nuclear magnetic resonance (NMR) chemical shift in polymer solutions with their low molecular mass analogues showed the effect of steric hindrance on hydrogen bonding. This initial investigation is helpful for understanding the intermolecular interaction in relatively weak hydrogen bonding polymer solutions. |
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| Keywords: | hydrogen bonding chloroform polyacrylate nuclear magnetic resonance (NMR) |
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