本研究是一系列芳香族聚醯胺-醯亞胺的合成，由1,4-[Bis(trimellitimidophenoxy)-2-trifluoromethyl]benzene與各種不同的二胺，在含有氯化鈣的NMP溶液中，以triphenyl phosphite與pyridine為縮合劑行直接聚縮合法合成聚醯胺-醯亞胺。實驗的主要目的，是要了解氟原子對高分子性質的影響，如固有黏度、溶解度、熱性質、機械性質和吸濕率。同時，也探討反應單體濃度、反應時間和反應溫度對產物固有黏度的影響。
所合成的聚醯胺-醯亞胺均為非晶型聚合物，且可溶於各種極性非質子溶劑。實驗之最佳反應條件為：單體濃度20%、反應溫度110℃、反應時間90min。所得之高分子均可溶於NMP中，且能製成透明且柔軟的薄膜。這些聚醯胺-醯亞胺的固有黏度值介於0.77-1.03dL/g，並具有良好的熱安定性。以DSC與DMA測得的玻璃轉移溫度(Tg)，分別為244-272℃與251 -282℃；而在氮氣中測得重量損失5%之熱裂解溫度(Td)高於525℃，此外，也都具有不錯的機械性質，並有較低的吸濕率。

A series of aromatic poly(amide-imide)s were synthesized by 1,4-[Bis(trimellitimidophenoxy)-2-trifluoromethyl]benzene with various aromatic diamines in N-methyl-2-pyrrolidone(NMP) containing calcium chloride and using triphenyl phosphite and pyridine as condensing agents through direct polycondensation. The primary aim of this work was to illustrate the effect of trifluoromethyl group on the properties of polymers, such as inherent viscosity, solubility, thermal properties, dynamic mechanical properties and moisture absorption. In addition, the effect of reaction conditions, such as monomer concentration, reaction time and reaction temperature, on the inherent viscosity of the resulted poly(amide-imide)s will also be investigated.
All the trifluoromethyl group containing poly(amide-imide)s were amorphous and readily soluble in various polar aprotic solvent. The most favorable reaction conditions for polymerization are summarized: the monomer conc. of 20%, the reaction temperture of 110℃, and the reaction time of 90min. Transparent and flexible films of these polymers could be cast from the NMP solutions. The poly(amide-imide)s having inherent viscosity of 0.77-1.03dL/g were obtained. These polymers were thermally quite stable. The glass transition temperatures of these poly(amide- imide)s were in the range of 244-272℃ by DSC and 282-317℃ by DMA, and 5%weight loss temperature in nitrogen were above 525℃; these poly(amide-imide)s maintained good mechanical properties and lower moisture absorption.

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