聚苯咪唑合成及薄膜性質

Synthesis and membrane properties of polybenzimidazole

邱志豪(Chih-Hao Chiu)

指導教授 ： 余子隆

元智大學/工程學院/化學工程與材料科學學系/碩士(2004年)

摘要

無資料

關鍵字

聚苯咪唑 ； PBI ； PBI薄膜

並列摘要

In this study, polybenzimidazole (PBI) was synthesized from 3,3’-diamino benzidine and isophthalic acid. The structure of polybenzimidazole was determined by FTIR and 13CNMR. The polybenzimidazole had an inherent viscosity of 1.29 dL/g (0.500 g/dL in 98% sulfuric acid solution). Thermal gravimetric analysis (TGA) showed that there was a 12.5% weight lose as temperature was raised from 30℃ to 200℃, due to the evaporation of water. The film of PBI was prepared by casting the PBI/dimethylacetamide solution and evaporated the solvent under 120℃ and then the membrane was annealed at 200℃. The physical and chemical properties of PBI film were investigated using material testing machine, acid doping level, and conductivity measurements. According to the experimental results, it is shown that increasing the annealing time at 200℃ increases the acid doping level. The conductivity of acid-doped PBI is influenced by doping level, environmental temperature and relative humidity.

並列關鍵字

Polybenzimidazole ； PBI ； PBI membrane

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