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Synthesis and Properties of Ionic Polyacetylene Derivatives with Pyridinium Substituents
제갈영순,진성호,심상연,임권택 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2
The conjugated polyelectrolytes, which are defined as an ionic conjugated polymer with a significant fraction of covalently attached ionic groups, are of great interests because these materials show ionic and electrical conductivities in a flexible solid network. The synthesis of various ionic polyacetylenes with pyridyl substituents having the designed counter ions have been performed by the in-situ polymerization of ethynylpyridine using the functional reactants without any additional catalysts in relatively high yields. Here, we prepared the conjugated polymers with pyridinium salts and characterizaed the polymer structure. Quasi-solid-state DSSCs with a SnO₂:F/TiO₂/D719 dye/solidstate electrolyte/Pt device was fabricated with conjugated polymers with pyridinium moieties, which showed the power conversion efficiency (PCE) of 5.33-6.01%.
Kevlar/Epoxy 프리프레그의 보관 및 노출시간의 영향에 관한 연구
諸葛英淳 慶一大學校 2002 論文集 Vol.18 No.-
The effect of storage and exposing time of a Kevlar/Epoxy prepreg for NOSE CONE fabrication was studied by various instrumental methods such as NMR, IR, GPC, etc. It was found that the chemical structure and compositions of the Kevlar/Epoxy prepreg after 1 year at the temperature of -20℃ were similar with those of a new Kevlar/Epoxy prepreg. The exposing time at the room of 20℃ was also found to be not severe even after 10 days of exposing time.