2015 Fiscal Year Annual Research Report
新規２Ｄ両親媒性化合物を用いた汎用高分子膜の表面改質による高性能酸素分離膜の開発
| Project/Area Number |
15J04650
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| Research Institution | Niigata University |
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Principal Investigator |
王 建軍 新潟大学, 自然科学系, 特別研究員(DC2)
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| Project Period (FY) |
2015-04-24 – 2017-03-31
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| Keywords | Surface modification / 2D polymer / Oxygen permselectivity |
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| Outline of Annual Research Achievements |
以前、当研究室のオリジナル反応である、置換アセチレンポリマーの高選択光環化分解反応により、新規２Ｄ両親媒性化合物を合成し、これを汎用高分子膜の表面修飾剤として用い、その膜の酸素透過性の改質に成功している。この効果の詳細は不明ではあるが、膜表面をこの新規２Ｄ両親媒性化合物が効率良く、２Ｄ状に覆ったことによる分子ふるい効果が原因の一部であると捉えていた。
当該年度では、新規２Ｄ両親媒性化合物に縮合官能基を導入し、これらの分子間重縮合を膜表面で実現し、より広面積の２Ｄ表面の形成と、それによる分子ふるい効果の向上を目指した。その結果、期待した変化ではないが、いずれも透過性能に向上が見られた。
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
In this research, five kinds of novel 2D surface modifiers with polymerizable end groups and hydrophilic or hydrophobic side chains that will act as an anchor were prepared by SCAT of the corresponding copolymer membranes, Two kinds of polymers(PSPA and PDPA) which showed a perfect membrane forming ability and also good permeability were selected as the base polymer membranes, the methanol solution of the 2D surface modifier and toluene solution of the base polymer were blended and casted on the Teflon sheet to get the supramolecular 2D polymer on the surface of the base polymer(Ⅱ), and this resulting membrane were immersing into the 1,2-ethanediamine for 48h at room tempreture to get the 2D polymer on the base polymer(Ⅲ). The resulting surface-modified membranes after in-situ reaction showed obviously higher PO2 and PO2/PN2 than the base polymer membranes. In addition, some of them showed the highest PO2/PN2 at their PO2 among polymer membranes reported before. These improvement could be caused by 2D polymer membranes formed on the surface which acted like a molecular sieve membrane on the membrane surface.
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| Strategy for Future Research Activity |
in the next stage,the base polymer will be removed after the in-situ reaction of the 2D surface modifer on the membranes' surface to get the self-supporting 2D polymer and it was shuch a novel method to synthesis 2D poylmer and it also expected to show a perfect oxygen permeselectivity. Beside of these, a novel kind of 2D surface modifer bearing the vinyl end groups will be synthezied by SCAT of the corresponding polymer, it will be also used for this research to get the 2D supramolecular membranes by post polycondensation of the end groups and this structure is more stable compared with the imides,structure of the membrane' surface will also be confirmed by the ATR-FTIR spectra an also the water contact angle on the membrane surface.
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Research Products
(3 results)
