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초록: 메탄올 용매에서 고분자 촉진 단량체와 소디윰 스티렌 슐포네이트를 방사선 그래프트 방법으로 양이온 교 환 PVdF 맴브레인을 제조하였다. 고분자 촉진 단량체로서 스티렌, 아크릴산, 비닐 피롤리돈을 사용하였다. 또한, 음이온 교환 PVdF 맴브레인도 방사선 그래프트 중합법에 의해 제조하였다. 양이온 및 음이온 교환 PVdF 맴브레인은 SEM, XPS 그리고 열분석기기를 통해 특성평가를 하였고 성공적으로 합성됨을 확인할 수 있었다. 그래프트 수율, 이온교환기 의 양 및 침투율은 각각 30.0∼32.3%, 2.81∼3.01 mmol/g 그리고 66.6∼147%로 평가되었으며, 20 ℃에서 이온 전 도도를 측정한 결과 0.020∼0.053 S/cm 이었다. 최종적으로, 제조된 양이온 및 음이온교환 PVdF 맴브레인은 전지 격막으로서 충분히 사용될 수 있음을 확인할 수 있었다.Abstract: A cation-exchange nanofiber poly(vinylidene fluoride) (PVdF) membrane was prepared by a radiation-induced graft polymerization (RIGP) of sodium styrene sulfonate (NaSS) in the presence of the polymerizable access agents in methanol solution. The used polymerizable access agents include styrene, acrylic acid, and vinyl pyrrolidone. The anion-exchange nanofiber PVdF membrane was also prepared by RIGP of glycidyl methacrylate (GMA) and its subsequent chemical modification. The successful preparations of cation-and anion-exchange PVdF membranes were confirmed via SEM,XPS and thermal analysis. The content of the grafting yield, ion-exchange group, and water uptake was in the range of 30.0∼32.3%, 2.81∼3.01 mmol/g and 66.6∼147%, respectively. The proton conductivity at 20 ℃ was in the range of 0.020∼0.053 S/cm. From the result, the prepared ionexchange PVdF membrane can be used as a separator in battery cells.

We report the preparation of hollow spherical polypyrrole balls (HSPBs) by two different approaches. In the first approach, core-shell conductive balls, CSCBs, were prepared with poly(styrene) as core and polypyrrole (PPy) as shell by in situ polymerization of pyrrole in the presence of polystyrene (PS) latex particles. In the other approach, CSCBs were obtained by in situ copolymerization of pyrrole in the presence of PS(F) with hydrophilic groups like anhydride, boronic acid, carboxylic acid, or sulfonic acid, and then HSPBs were obtained by the removal of PS or PS(F) core from CSCBs. TEM images reveal the spherical morphology for HSPBs prepared from PS(F). The conductivity of CSCBs and HSPBs was in the range of 0.20–0.90 S/cm2.

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주제어: Electrochemical polymerization, Functionalized pyrrole, 1-pyrrolyl-6-tetrahydropyranyloxyhexane, 6-pyrrolyl-hexane-1-ol, (R)-6-(pyrrolyl)hexyl 1-(naphthalenyl)ethylcarbamate