含氟聚醯胺─亞醯胺之合成與性質之研究

Studies on the Synthesis and Properties of Fluorine-Containing Poly(amide-imide)s

陳彥邦(Yan-Bang Chen)

指導教授 ： 張德洲

中原大學/工學院/化學工程研究所/碩士(2003年)

https://doi.org/10.6840/cycu200300307

摘要

本研究是利用直接縮合法，將含有二亞醯胺基之二酸單體與具有含氟取代基之芳香族二胺單體，使用亞磷酸三苯酯 ( TPP ) 及吡啶為縮合劑、氯化鋰為助溶劑、 NMP 為溶劑進行聚合，合成出多系列之含氟聚醯胺－亞醯胺，以探討在不同結構下所形成之含氟聚醯胺－亞醯胺的熱性質與溶解性。在溶解性方面，含氟聚醯胺－亞醯胺可溶解於非極性溶劑如 NMP 、 DMAc 、 DMF 、 DMSO 中。在熱性質方面，含氟聚醯胺－亞醯胺的玻璃轉移溫度介於 207 ~ 262 ℃ 之間，而其在氮氣下的熱重損失 10 wt% 的溫度介於 315 ~ 452 ℃ 之間。
本研究也對聚縮合反應的最佳條件進行探討，當二酸單體為 2.5 mmol 與二胺單體為 2.5 mmol 時，所得的最佳反應條件為溶劑 NMP 10 ml 、 Pyridine 4 ml 、助溶劑 LiCl 3.5 wt% ( 總溶劑量 ) 、縮合劑 TPP 過量 10 mole% ( 單體總莫耳數 ) 、溫度 145 ℃ 。
本研究同時也利用含氟聚醯胺－亞醯胺來製備奈米複合材料，測試黏土的添加對其機械性質與成膜性之影響。

關鍵字

含氟 ； 聚醯胺─亞醯胺

並列摘要

Various series of fluorine-containing poly(amide-imide)s were prepared from diimide-dicarboxylic acid monomers and fluorine-containing aromatic diamine monomers by direct polycondensation in N-methyl-2-pyrrolidinone ( NMP ) containing lithium chloride ( LiCl ) using triphenylphosphite ( TPP ) and pyridine as condensing agents. The solubility and thermal properties of fluorine-containing poly(amide-imide)s have been investigated. The synthesized fluorine-containing poly(amide-imide)s were soluble in aprotic polar solvents such as NMP, DMAc, DMF, and DMSO. The glass transition temperatures of the synthesized polymers were in the range of 207 ~ 262℃. The temperature of 10% weight loss of synthesized polymers were in the range of 315 ~ 452℃ under nitrogen atmosphere ( environment ).
In this study, the optimized direct polycondensation condition for 2.5 mmole of diimide-dicarboxylic acid monomer and 2.5 mmole of fluorinated aromatic diamine monomer was found when 10 ml of NMP, 4 ml of pyridine, lithium chloride 3.5 wt% of solvent, and TPP at 10 mole% excess to total monomers and synthesized at 145℃.
The mechanical properties and film formation properties of nanocomposites prepared from fluorinated poly(amide-imide)s with clay were also investigated.

並列關鍵字

Fluorine-Containing ； poly(amide-imide)s

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