| SYNTHESIS AND NMR CHARACTERIZATION OF PRECURSORS OF EPOXY NETWORK AS POLYMER HOST FOR SOLID ELECTROLYTE |
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| 作者姓名： | 巴恒飞 彭新生 陈东霖 王佛松 |
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| 作者单位： | Laboratory of Polymer Physics，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun 130022，Laboratory of Polymer Physics，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun 130022，Laboratory of Polymer Physics，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun 130022，Laboratory of Polymer Physics，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun 130022 |
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| 基金项目： | The project supported by National Natural Science Foundation of China. |
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| 摘 要： | To raise the room temperature ionic conductivity and improve the mechanical strength of a PEO-based polymer electrolyte, a noncrystalline two-component epoxy electrolyte system has been prepared. The diglycidyl ether of polyethylene glycols as precursors of the system were synthesized by a two-step process. The presumed structure of the product was characterized, by ~(13)C, ~1H NMR and IR spectroscopy. It was found that a side-reaction occurred between the secondary hydroxyl group of PEG-chlorohydrin and epichlorohydrin in some degree, resulting in a by- product containing—CH_2Cl side group. By selecting a characteristic signal, which is undistorted by the increase in the length of CH_2 CH_2—O segment, a ~1H NMR approach of determining the equivalent epoxy weight (EEW) was proposed. The method is valid to specimens even though the EEW is as high as 2,000. The examination of the specimens by DSC showed that epoxidation greatly depressed the crystallinity of the PEG's, whereas the T_g was raised.
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| 收稿时间： | 1990-11-20 |
SYNTHESIS AND NMR CHARACTERIZATION OF PRECURSORS OF EPOXY NETWORK AS POLYMER HOST FOR SOLID ELECTROLYTE* |
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| BA Hengfei,PENG Xinsheng,CHEN Donglin,WANG Fosong.SYNTHESIS AND NMR CHARACTERIZATION OF PRECURSORS OF EPOXY NETWORK AS POLYMER HOST FOR SOLID ELECTROLYTE[J].Chinese Journal of Polymer Science,1992,0(1):32-43. |
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| Authors: | BA Hengfei PENG Xinsheng CHEN Donglin WANG Fosong |
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| Institution: | Laboratory of Polymer Physics; Changchun Institute of Applied Chemistry; Academia Sinica; Changchun |
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| Abstract: | To raise the room temperature ionic conductivity and improve the mechanical strength of a PEO-based polymer electrolyte, a noncrystalline two-component epoxy electrolyte system has been prepared. The diglycidyl ether of polyethylene glycols as precursors of the system were synthesized by a two-step process. The presumed structure of the product was characterized, by 13C, 1H NMR and IR spectroscopy. It was found that a side-reaction occurred between the secondary hydroxyl group of PEG-chlorohydrin and epichlorohydrin in some degree,resulting in a by-product containing-CH2Cl side group.By selecting a characteristic signal,which is undistorted by the increase in the length of CH2CH2-O segment,a 1H NMR approach of determining the equivalent epoxy weight (EEW) was proposed.The method is valid to specimens even though the EEW is as high as 2,000.The examination of the specimens by DSC showed that epoxidation greatly depressed the crystallinity of the PEG's,whereas the Tg was raised. |
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| Keywords: | Polymer solid electrolyte Polyethylene glycol epoxy network ~(13)C and ~1H NMR characterization ~1H NMR method of determining epoxide equivalent weight |
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