巻号一覧
39 巻 (2014)
- 6 号 p. 350-
- 5 号 p. 270-
- 4 号 p. 180-
- 3 号 p. 118-
- 2 号 p. 68-
- 1 号 p. 2-
39 巻, 3 号
選択された号の論文の7件中1～7を表示しています
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巻頭言
特集：気体分離膜の性能向上と広がる用途
総説
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藏 雨, 青木 俊樹, 寺口 昌宏, 金子 隆司2014 年 39 巻 3 号 p. 118-131
発行日: 2014年
公開日: 2014/08/24
ジャーナル 認証ありTwo-dimensional (2D) polymers are very attractive because they are promising for ideal molecular-sieving membranes (MSM) for separating small gas molecules completely such as H2, O2, N2, and CO2 which have not been realized. However, 2D polymers have a lot of questions and problems which should be answered and solved. For example, “Are they not present in the world?”, “Why are they not popular in textbooks?”, “How are they synthesized?”, and “What are 2D polymers?”. In this review, we are trying to answer and solve them. First, in chapter 1, 2D polymers, MSMs, and their relationship are introduced. In chapter 2, we try to define and classify 2D polymers in view of their first-order and high-order structures. Chapter 3 describes a few reports on real 2D polymers first and then many reports on their related polymers such as covalent organic frameworks (COF), carbonized molecular-sieving (CMS) membranes, polymers of intrinsic porosity (PIM), and finally our recent results on synthesis of 2D polymers and their application to separation membranes. In chapter 4, the future of 2D polymers is discussed.抄録全体を表示PDF形式でダウンロード (996K) -
喜多 英敏2014 年 39 巻 3 号 p. 132-138
発行日: 2014年
公開日: 2014/08/24
ジャーナル 認証ありLast decade, much progress has been seen in research in inorganic microporous membranes such as silica, carbon and zeolite based membranes. Microporous membranes are referred to those porous membranes with pore diameter smaller than 2 nm. Silica based membranes are prepared by the sol-gel or CVD method. Carbon membranes are prepared by the pyrolysis of a polymer precursor. Zeolite membranes are prepared by the hydrothermal synthesis. This review gives a summary of recent advances in synthesis, properties and potential applications of these membranes for gas separation.抄録全体を表示PDF形式でダウンロード (1065K) -
神尾 英治, 松山 秀人2014 年 39 巻 3 号 p. 139-146
発行日: 2014年
公開日: 2014/08/25
ジャーナル 認証ありRecent developments of facilitated transport membranes for gas separation are summarized. A facilitated transport membrane is one of functional membranes containing a carrier which can reversibly and selectively react with a target molecules including some gases such as CO2, O2, olefin and so on. A facilitated transport membrane shows excellent permeability and selectivity for a targeted gas, although the excellent gas permeability is achieved within limited condition. In order to expand the application area of a facilitated transport membrane, in recent years, task-specific ionic liquids have attracted their attentions as a key material which acts as not only a carrier but also diffusion medium of a facilitated transport membrane.抄録全体を表示PDF形式でダウンロード (844K) -
プロトン導電性芳香族高分子膜の開発宮武 健治2014 年 39 巻 3 号 p. 155-161
発行日: 2014年
公開日: 2014/08/25
ジャーナル 認証ありFuel cells have attracted considerable attention as a promising energy device since it provides efficiently electric energy without emitting pollutants and green-house gases. Proton conductive membranes are one of the key components in polymer electrolyte fuel cells. The technical requirements for proton conductive membranes are high proton conductivity, gas impermeability, high vapor permeability, and chemical and mechanical stability under fuel cell operating conditions. Although fluorinated proton conductive membranes are currently most used, there has been a great demand for non-fluorinated alternatives because the fluorinated polymers have some drawbacks such as high oxygen permeability and high cost. In this article, I report synthesis and properties of proton conductive aromatic polymers, e.g., sulfonated polyimides and poly(arylene ether)s, for fuel cell applications. I focus on the effect of molecular structures (chemical components, cross-linking, branching, and/or block copolymers) on the membrane properties. Fuel cell performance and durability of the membranes are also described.抄録全体を表示PDF形式でダウンロード (1030K)
原著
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野村 幹弘, 杉山 雄飛, 大浦 琴音, 池田 歩, 松山 絵美, 俵山 博匡, 桑原 一也2014 年 39 巻 3 号 p. 162-167
発行日: 2014年
公開日: 2014/11/26
ジャーナル フリーMFI membranes with high gas permselectivities were successfully prepared on a novel porous silica substrate. Procedures for coating of MFI seed crystals are important due to ζ-potential difference between the silica substrates and the seed crystals. Dense MFI membranes were obtained from the seed slurry of pH 2, because the isoelectric pH of silica is 2. MFI membranes were crystalized at 180 ℃ for 16 h. The parent gel compositions were SiO2 : TPABr : Na2O : H2O=1 : 0.2 : 0.01 ∼ 0.6 : 150 ∼ 600 (mol/mol). Single gas permeation tests were performed by using N2, SF6, C3H6 and C3H8 at room temperature. N2 permeance was 3.0 × 10-6 mol m-2 s-1 Pa-1 with high N2/SF6 permeance ratio of 108 through the membrane. This is one of the best results among the previously reported MFI membranes. This membrane showed the high hydrocarbon permeances. C3H6 permeance was 2.0 × 10-6 mol m-2 s-1 Pa-1 with C3H6/C3H8 permeance ratio of 6.16.抄録全体を表示PDF形式でダウンロード (769K)
短報
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Rie Sano, Saeid Rajabzadeh, Toru Ishigami, Yoshikage Ohmukai, Hideto M ...2014 年 39 巻 3 号 p. 168-172
発行日: 2014年
公開日: 2014/11/26
ジャーナル 認証ありIn order to prepare poly(vinyl chloride) (PVC) hollow fiber membrane with enough antifouling properties, several types of vinyl chloride (VC) copolymers were used as blending polymers at the membrane fabrication. Interactions of different VC copolymer films with BSA were evaluated by using quartz crystal microbalance with dissipation monitoring (QCM-D). Among the studied copolymers, vinyl chloride-co-poly(ethylene glycol)methyl ether methacrylate (VC-co-PEGMA) showed the lowest interaction with BSA. Blend hollow fiber membranes with different VC-co-PEGMA contents were prepared via nonsolvent induced phase separation (NIPS) method and applied for BSA filtration. While by increasing the VC-co-PEGMA content, membrane mechanical strength decreased, water permeability of the prepared membranes increased sharply. BSA filtration results revealed that when PVC over VC-co- PEGMA ratio reached to 50%, membrane showed good antifouling properties. Thus, blend hollow fiber membrane prepared by using VC-co-PEGMA can be potentially applied for membrane process to reduce the fouling.抄録全体を表示PDF形式でダウンロード (614K)
製品 & 技術
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桑原 愛2014 年 39 巻 3 号 p. 173-176
発行日: 2014年
公開日: 2014/11/26
ジャーナル 認証ありNOF manufactures and supplies highly purified phospholipid derivatives suitable for liposome formulations which are extensively used for pharmaceuticals. And we has provided novel phospholipid derivatives, ‘SUNBRIGHT® DSPE-PG8’ series. Use of these lipids enables researchers to obtain highly pH-sensitive carriers for efficient cytoplasmic delivery of bioactive molecules. As the example of carriers, we designed pH-sensitive liposomes. These liposomes were stable at physiological pH, but became destabilized and fusogenic significantly responding sharply to very small pH change in weakly acidic pH region. They delivered their contents (pyranine) into cytosol of dendritic cell-derived DC2.4 cells. When these pH-sensitive liposomes loaded with antigenic protein ovalbumin (OVA) were subcutaneously administered to mice, the antigen-specific cellular immunity was efficiently induced in the mice.抄録全体を表示PDF形式でダウンロード (1021K)
編集後記
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