Synthesis and Properties of Novel Organosoluble and Low-color Poly(ether-imide)s and Poly(ether-amide)s with Triptycene Moiety
碩士 === 國立臺北科技大學 === 化學工程研究所 === 99 === This thesis deals with the synthesis and properties of new triptycene-containing poly(ether-imide)s and poly(ether-amide)s. Their properties such as inherent viscosity, molecular weights, film-forming ability, solubility, crystallinity, thermal and optical prop...
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ndltd-TW-099TIT050630772019-05-15T20:42:28Z http://ndltd.ncl.edu.tw/handle/q5jvxf Synthesis and Properties of Novel Organosoluble and Low-color Poly(ether-imide)s and Poly(ether-amide)s with Triptycene Moiety 新型含三蝶烯結構之可溶性、淡色聚醚醯亞胺與聚醚醯胺的合成與性質研究 Ji-Shian Chou 邱繼賢 碩士 國立臺北科技大學 化學工程研究所 99 This thesis deals with the synthesis and properties of new triptycene-containing poly(ether-imide)s and poly(ether-amide)s. Their properties such as inherent viscosity, molecular weights, film-forming ability, solubility, crystallinity, thermal and optical properties were investigated and compared with their analogs without triptycene units. The first part deals with the synthesis and characterization of aromatic poly(ether-imide)s based on a triptycene bis(ether anhydride). A series of poly(ether-imide)s containing three-dimensional triptycene moieties were prepared from 1,4-bis(3,4-dicarboxyphenoxy)triptycene dianhydride with various aromatic diamines via a conventional two-stage process that included ring-opening polyaddition to form the poly(amic acid)s followed by thermal or chemical imidization to the poly(ether-imide)s. The inherent viscosities of the poly(amic acid) precursors were in the range of 0.44-0.91 dL/g. Most of the poly(ether-imide)s showed good solubility in many organic solvents and could be solution-cast into transparent and tough films. They also showed good thermal stability with glass-transition temperatures of 238~302 oC and 10% weight loss temperatures in excess of 572 oC. These triptycene-based poly(ether-imide)s showed enhanced optical transparency, decreased color intensity and lowered dielectric constants as compared to conventional aromatic polyimides. The poly(ether-imide)s derived from trifluoromethyl-containing bis(ether amine)s could afford highly optically transparent and almost colorless films. The second part of this thesis describes the synthesis and properties of novel triptycene-containing poly(ether-amide)s from 1,4-bis(4-carboxyphenoxy)triptycene with various aromatic diamines or from 1,4-bis(4-aminophenoxy)triptycene with various aromatic dicarboxylic acids via the phosphorylation polyamidation reaction. These poly(ether-amide)s were essentially amorphous and showed a significantly increased solubility as compared with their analogs without the triptycene units. All the poly(ether-amide)s could be solution-cast into flexible and tough films. Apart from high Tg values and good thermal stability, these poly(ether-amide) films exhibited high optical transparency with an ultraviolet-visible absorption cutoff wavelength (λ0) down to 338 nm. Sheng-Huei Hsiao 蕭勝輝 2011 學位論文 ; thesis 79 en_US |
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碩士 === 國立臺北科技大學 === 化學工程研究所 === 99 === This thesis deals with the synthesis and properties of new triptycene-containing poly(ether-imide)s and poly(ether-amide)s. Their properties such as inherent viscosity, molecular weights, film-forming ability, solubility, crystallinity, thermal and optical properties were investigated and compared with their analogs without triptycene units.
The first part deals with the synthesis and characterization of aromatic poly(ether-imide)s based on a triptycene bis(ether anhydride). A series of poly(ether-imide)s containing three-dimensional triptycene moieties were prepared from 1,4-bis(3,4-dicarboxyphenoxy)triptycene dianhydride with various aromatic diamines via a conventional two-stage process that included ring-opening polyaddition to form the poly(amic acid)s followed by thermal or chemical imidization to the poly(ether-imide)s. The inherent viscosities of the poly(amic acid) precursors were in the range of 0.44-0.91 dL/g. Most of the poly(ether-imide)s showed good solubility in many organic solvents and could be solution-cast into transparent and tough films. They also showed good thermal stability with glass-transition temperatures of 238~302 oC and 10% weight loss temperatures in excess of 572 oC. These triptycene-based poly(ether-imide)s showed enhanced optical transparency, decreased color intensity and lowered dielectric constants as compared to conventional aromatic polyimides. The poly(ether-imide)s derived from trifluoromethyl-containing bis(ether amine)s could afford highly optically transparent and almost colorless films.
The second part of this thesis describes the synthesis and properties of novel triptycene-containing poly(ether-amide)s from 1,4-bis(4-carboxyphenoxy)triptycene with various aromatic diamines or from 1,4-bis(4-aminophenoxy)triptycene with various aromatic dicarboxylic acids via the phosphorylation polyamidation reaction. These poly(ether-amide)s were essentially amorphous and showed a significantly increased solubility as compared with their analogs without the triptycene units. All the poly(ether-amide)s could be solution-cast into flexible and tough films. Apart from high Tg values and good thermal stability, these poly(ether-amide) films exhibited high optical transparency with an ultraviolet-visible absorption cutoff wavelength (λ0) down to 338 nm.
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author2 |
Sheng-Huei Hsiao |
author_facet |
Sheng-Huei Hsiao Ji-Shian Chou 邱繼賢 |
author |
Ji-Shian Chou 邱繼賢 |
spellingShingle |
Ji-Shian Chou 邱繼賢 Synthesis and Properties of Novel Organosoluble and Low-color Poly(ether-imide)s and Poly(ether-amide)s with Triptycene Moiety |
author_sort |
Ji-Shian Chou |
title |
Synthesis and Properties of Novel Organosoluble and Low-color Poly(ether-imide)s and Poly(ether-amide)s with Triptycene Moiety |
title_short |
Synthesis and Properties of Novel Organosoluble and Low-color Poly(ether-imide)s and Poly(ether-amide)s with Triptycene Moiety |
title_full |
Synthesis and Properties of Novel Organosoluble and Low-color Poly(ether-imide)s and Poly(ether-amide)s with Triptycene Moiety |
title_fullStr |
Synthesis and Properties of Novel Organosoluble and Low-color Poly(ether-imide)s and Poly(ether-amide)s with Triptycene Moiety |
title_full_unstemmed |
Synthesis and Properties of Novel Organosoluble and Low-color Poly(ether-imide)s and Poly(ether-amide)s with Triptycene Moiety |
title_sort |
synthesis and properties of novel organosoluble and low-color poly(ether-imide)s and poly(ether-amide)s with triptycene moiety |
publishDate |
2011 |
url |
http://ndltd.ncl.edu.tw/handle/q5jvxf |
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