| 高分子 Vol.59 No.9 |
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特集 飛躍する高分子ゲル
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| グローイングポリマー Growing Polymers: A Personal Account |
| 未知との遭遇 Close Encounters of the New Kind |
池谷 武志 Takeshi IKEYA |
| ＜要旨＞ There are many “close encounters of new kinds”, not only in the field of research but also in many other fields. Maintaining your interest in those “close encounters” and playing an active role within them, you can open up a new world. |
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| 笑いと研究の類似性 The Similarity between Comedy and Research |
岩村 武 Takeru IWAMURA |
| ＜要旨＞ I describe the similarity between comedy and research in my academic research life. |
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| 展望 COVER STORY: Highlight Reviews |
| イオン液体を溶媒とする高分子ゲル ─イオンゲルの特徴と機能─ Ionic Liquid as Solvent for Polymer Gel: Design, Characteristics, and Development of Ion-Gel |
上木 岳士・渡邉 正義 Takeshi UEKI and Masayoshi WATANABE |
| ＜要旨＞イオン液体とはプラスとマイナスのイオンのみからなる塩であるにもかかわらずその融点が室温以下にある常温溶融塩である。筆者らはこの液体を高分子ゲルの溶媒として用いることを提案してきた。本稿ではイオン液体を溶媒に用いたゲル（イオンゲル）のユニークな特徴と最近の研究動向を紹介する。 Keywords: Ionic Liquid / Ion-Gel / Fuel Cell / Nano-Gel / Volume Phase Transition / Block Copolymer / Structural Color / Colloid |
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| 中性子散乱で観た高強力ゲルの構造 Structures of High Strength Polymer Gels Revealed by Small-angle Neutron Scattering |
柴山 充弘 Mitsuhiro SHIBAYAMA |
| ＜要旨＞近年，次々と高強力ゲルが開発されている。中性子散乱は，そうしたゲルの優れた物性の発現メカニズムを解明する有力な手段の一つである。溶媒に重水素化溶媒を用いることで容易に散乱コントラストをつけることができるので，ゲル中での高分子網目の振る舞いをさまざまな環境で観察することができる。躍進するゲルの中性子散乱研究を展望する。 Keywords: Small-Angle Neutron Scattering / Gels / Mechanical Properties / Nanocomposite Gels / Slide Ring Gels / Double Network Gels / Tetra-PEG Gels Rubber Elasticity |
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| 超分子ポリマー系の構造とダイナミックス Structures and Dynamics of Supramolecular Polymeric Systems |
四方 俊幸 Toshiyuki SHIKATA |
| ＜要旨＞ベンゼン環やシクロヘキサン環の1，3，5位にアミド基を介して対称に三つのアルキル側鎖を有するゲル化剤は，低粘度の非極性溶媒中で三つ編み状の水素結合を形成することで螺旋を巻きながら，あるいは直線状に成長して大きな電気双極子をともなう超分子ポリマーを形成する。それらの溶液はMaxwell要素であらわせる緩和性の粘弾性挙動と，Debye緩和型の誘電分散を示す。 Keywords: Gelator / Supramolecular Polymer / Electric Dipole / Dielectric Relaxation / Viscoelasticity / Rheology / Relaxation Time |
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| トピックス COVER STORY:Topics and Products |
| ゲルの非線形力学現象 Nonlinear Mechanical Phenomena in Gels |
田中 良巳 Yoshimi TANAKA |
| ＜要旨＞ Mechanical nonlinearity
of gels is involved in various strongly irreversible phenomena, such as
fracture, friction and impact. In the first part of this report, we focus
on yielding deformation and high toughness of double-network gels. In
the latter part, we reconsider a well-known mechanical property of gels,
stretch-induced swelling. Keywords: DN Gel / Yielding / Toughness / Swelling |
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| アクアマテリアル：低炭素社会の実現にむけた材料開発の一つの方向 Aqua Materials : A Possible Direction of Material Design toward the Realization of a Low-Carbon Society |
相田 卓三 Takuzo AIDA |
| ＜要旨＞ Water and clay
(2-5%) quickly form a transparent hydrogel upon mixing with a minute amount
of a dendritic molecular glue carrying multiple guanidinium ion pendants
(< 0.15%). This material can be molded into shape-persistent freestanding
objects owing to its high mechanical strength, and instantaneously self-heals
when destroyed. Keywords: Hydrogel / Clay / Dendrimer / Molecular Glue / Healing / Supramolecular Chemistry |
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| 4 分岐ポリマーユニットからなる高分子網目構造 Polymer Network Fabricated from Tetra-Arm Polymer Unit |
酒井 崇匡 Takamasa SAKAI |
| ＜要旨＞ Generally, polymer
gels have inhomogeneous network structures, because transient structures
are frozen in the crosslinking process. Recently, we fabricated the homogeneous
network structure, Tetra-PEG gel, using the tetra-arm polymers as network
modules. In this paper, we discuss the gelation process and mechanical
properties of Tetra-PEG gel. Keywords: Tetra-Arm Polymer / Ideal Polymer Network |
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| 磁場で硬さが大きく変わるゲル Magnetic Gel That Demonstrates Drastic Changes in Dynamic Modulus |
三俣 哲 Tetsu MITSUMATA |
| ＜要旨＞ A new class of
magnetorheological gel that demonstrates drastic and reversible changes
in dynamic modulus without using strong magnetic fields was obtained.
The magnetic gel consists of carrageenan of polysaccharides and carbonyl
iron particles. The magnetic gel exhibited a reversible increase by factors
of 500 of the storage modulus and 1200 of the loss modulus upon a magnetic
field of 500 mT. Keywords: Magnetic Gel / Magnetorheology / Stimuli-Responsive Gel |
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| 光応答収縮ゲルシートを用いたマイクロ流体制御システム Photo-Controllable Microfluidic System Composed of a Photo-Responsive Hydrogel Sheet |
須丸 公雄 Kimio SUMARU |
| ＜要旨＞ By using a photo-responsive
hydrogel sheet, we constructed a photo-controllable microfluidic system,
and demonstrated that microchannels along an arbitrary pathway can be
formed instantly just by micro-patterned light irradiation using a micro-projection
system in an “on-demand” manner. Also we constructed 10 photo-controllable
microvalves integrated within a 1 cm-square-area by combining a similar
system with a PDMS microchannel chip, and demonstrated that all the microvalves
can be controlled independently by local light irradiation. Keywords: Photo-Responsive Hydrogel / Microfluidics / Spiropyran / Micro-Patterned Light Irradiation / Microvalves |
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| ゲル電解質を用いた電気二重層キャパシタ Gel Electrolytes for Electric Double-Layer Capacitor |
石川 正司 Masashi ISHIKAWA |
| ＜要旨＞ Gel electrolytes
for an electric double-layer capacitor (EDLC) require high ionic carrier
density and mobility. The present article overviews conventional and novel
materials for EDLC gel electrolytes, and illustrates a practical EDLC
module with a gel electrolyte. Keywords: Capacitor / Gel Electrolyte / EDLC / Electric Double Layer |
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| 目薬コンタクトレンズ Drug Delivery through Soft Contact Lenses |
平谷 治之 Haruyuki HIRATANI |
| ＜要旨＞ The simplicity
of use and low cost of manufacturing make soft contact lenses an attractive
platform for ocular drug delivery systems. The possibility of both vision
correction and acting as a drug delivery system could remarkably enhance
the benefits of soft contact lenses. Keywords: Hydrogel / Drug Delivery / Molecular Imprint |
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| 高分子科学最近の進歩 Front-Line Polymer Science |
| レオロジー測定を活用した高分子物性研究 ─入門から工業的利用まで─ Physical Properties of Polymers Studied by Utilizing Rheological Measurements : From Introduction to Application in Industry |
高橋 良彰 Yoshiaki TAKAHASHI |
| ＜要旨＞In this article,
some topics of recent advances in physical properties and the relation
with structure for polymers are briefly reviewed. Topics included are,
viscoelastic properties of cyclic polymer and loop/bridge/dangling end
problems in polymer networks as fundamental ones. Two topics about improvement
of polymer processing by utilizing rheological measurements are introduced
as industrial application. A few other topics in nonlinear rheological
properties which are under the progress are mentioned. Keywords: Entanglements / Ring Polymer / Loop / Bridge / Dangling End / Polymer Processing / Strain Hardening / Shear Banding |
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| Copyright(C) 2010 The Society of Polymer Science, Japan All Rights Reserved. |