Chemical Synthesis and Ionic Conductivity of Water-SolubleRigid-Rod and Articulated Rigid-Rod Solid Polyelectrolytes
碩士 === 國立中山大學 === 材料科學研究所 === 89 === ABSTRACT A water-soluble rigid-rod polyelectrolyte sPBI-PS(Li+) could be doped with LiI and cast as a freestanding film from aqueous solution showing a room-temperature in-plane DC conductivity (s|| ) of 8.3╳10-3 S/cm. However, the cast film assumed an anisotro...
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ndltd-TW-089NSYS51590182016-01-29T04:33:30Z http://ndltd.ncl.edu.tw/handle/24000426847352258497 Chemical Synthesis and Ionic Conductivity of Water-SolubleRigid-Rod and Articulated Rigid-Rod Solid Polyelectrolytes 水溶性硬桿式固態聚電解質與鉸鏈型硬桿式固態共聚電解質之合成與電性 Ju-Pin Sun 孫如彬 碩士 國立中山大學 材料科學研究所 89 ABSTRACT A water-soluble rigid-rod polyelectrolyte sPBI-PS(Li+) could be doped with LiI and cast as a freestanding film from aqueous solution showing a room-temperature in-plane DC conductivity (s|| ) of 8.3╳10-3 S/cm. However, the cast film assumed an anisotropic microstructure due to preferential orientation of the rigid-rod backbone leading to an out-of-the plane DC conductivity (s^) which was three orders smaller than those of the s||, and severely limited its applications as a solid polyelectrolyte for thin-film battery. In addition to synthesizing rigid-rod polyelectrolyte sPBI-PS(Li+) for comparison, this study used 2-sulfo-terephthalic acid and isophthalic acid in ratios of 15:1, 25:1, or 50:1 for copolycondensation reaction making the rigid-rod backbone of sPBI-PS(Li+) become articulated. Further reaction with 1,3-propanesultone pendants, the rigid-rod polyelectrolyte was changed into a new water-soluble articulated rigid-rod polyelectrolyte A-sPBI-PS(Li+). Various analyses were applied to ascertain chemical structure, purities, thermal properties and molecular weight of synthesized monomers and polymers. Freestanding films of sPBI-PS(Li+) and A-sPBI-PS(Li+) were cast from aqueous solutions doped with LiI, LiBF4, or LiCF3SO3 for various concentrations up to 5 wt.%. Thin-film room-temperature s|| of sPBI-PS(Li+) could be 3.15´10-3 S/cm, and of A-sPBI-PS(Li+) could be 2.76´10-3 S/cm. X-ray scattering and electron microscopic results suggested that the sPBI-PS(Li+) cast film was in-plane isotropic but out-of-the plane anisotropic, and the A-sPBI-PS(Li+) cast film was three-dimensionally isotropic. S. J. Bai 白世榮 2001 學位論文 ; thesis 86 zh-TW |
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碩士 === 國立中山大學 === 材料科學研究所 === 89 === ABSTRACT
A water-soluble rigid-rod polyelectrolyte sPBI-PS(Li+) could be doped with LiI and cast as a freestanding film from aqueous solution showing a room-temperature in-plane DC conductivity (s|| ) of 8.3╳10-3 S/cm. However, the cast film assumed an anisotropic microstructure due to preferential orientation of the rigid-rod backbone leading to an out-of-the plane DC conductivity (s^) which was three orders smaller than those of the s||, and severely limited its applications as a solid polyelectrolyte for thin-film battery.
In addition to synthesizing rigid-rod polyelectrolyte sPBI-PS(Li+) for comparison, this study used 2-sulfo-terephthalic acid and isophthalic acid in ratios of 15:1, 25:1, or 50:1 for copolycondensation reaction making the rigid-rod backbone of sPBI-PS(Li+) become articulated. Further reaction with 1,3-propanesultone pendants, the rigid-rod polyelectrolyte was changed into a new water-soluble articulated rigid-rod polyelectrolyte A-sPBI-PS(Li+). Various analyses were applied to ascertain chemical structure, purities, thermal properties and molecular weight of synthesized monomers and polymers. Freestanding films of sPBI-PS(Li+) and A-sPBI-PS(Li+) were cast from aqueous solutions doped with LiI, LiBF4, or LiCF3SO3 for various concentrations up to 5 wt.%. Thin-film room-temperature s|| of sPBI-PS(Li+) could be 3.15´10-3 S/cm, and of A-sPBI-PS(Li+) could be 2.76´10-3 S/cm. X-ray scattering and electron microscopic results suggested that the sPBI-PS(Li+) cast film was in-plane isotropic but out-of-the plane anisotropic, and the A-sPBI-PS(Li+) cast film was three-dimensionally isotropic.
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author2 |
S. J. Bai |
author_facet |
S. J. Bai Ju-Pin Sun 孫如彬 |
author |
Ju-Pin Sun 孫如彬 |
spellingShingle |
Ju-Pin Sun 孫如彬 Chemical Synthesis and Ionic Conductivity of Water-SolubleRigid-Rod and Articulated Rigid-Rod Solid Polyelectrolytes |
author_sort |
Ju-Pin Sun |
title |
Chemical Synthesis and Ionic Conductivity of Water-SolubleRigid-Rod and Articulated Rigid-Rod Solid Polyelectrolytes |
title_short |
Chemical Synthesis and Ionic Conductivity of Water-SolubleRigid-Rod and Articulated Rigid-Rod Solid Polyelectrolytes |
title_full |
Chemical Synthesis and Ionic Conductivity of Water-SolubleRigid-Rod and Articulated Rigid-Rod Solid Polyelectrolytes |
title_fullStr |
Chemical Synthesis and Ionic Conductivity of Water-SolubleRigid-Rod and Articulated Rigid-Rod Solid Polyelectrolytes |
title_full_unstemmed |
Chemical Synthesis and Ionic Conductivity of Water-SolubleRigid-Rod and Articulated Rigid-Rod Solid Polyelectrolytes |
title_sort |
chemical synthesis and ionic conductivity of water-solublerigid-rod and articulated rigid-rod solid polyelectrolytes |
publishDate |
2001 |
url |
http://ndltd.ncl.edu.tw/handle/24000426847352258497 |
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