KAKEN — Research Projects | Researcher Number: 40124648

Search Results: 10 results / Researcher Number: 40124648

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1. Study on Polymer-entrapped Nanogel Particles That Can Be Used Instead of Water-soluble Block or Graft Copolymers

Research Project

Research Category	Grant-in-Aid for Scientific Research (C)
Research Field	Polymer/Textile materials
Research Institution	University of Tsukuba
Principal Investigator	KOKUFUTA Etsuo University of Tsukuba
Project Period (FY)	2008 – 2010Completed
Keywords	ナノゲル微粒子 / 高分子包括固定 / グラフト共重合体 / ブロック共重合体 / 汎用高分子 / 高分子凝集剤
Research Abstract	Nano-sized cross-linked polymer networks, i.e., gel partcles with diameters in the range of tens to hundreds of nanometers, have an obscure surface du ...

Research Products of this project	Journal Article (12 results, of which Peer Reviewed: 12 results) Presentation (2 results) Remarks (8 results)

2. 水可溶性グラフト又はブロック共重合体と類似機能を有する高分子包括ナノ架橋体の合成

Research Project

Research Category	Grant-in-Aid for Exploratory Research
Research Field	Polymer/Textile materials
Research Institution	University of Tsukuba
Principal Investigator	國府田悦男 University of Tsukuba
Project Period (FY)	2006 – 2007Completed
Keywords	ナノゲル微粒子 / 高分子包括固定 / グラフト共重合体 / ブロック共重合体 / 光散乱実験 / ナノゲル間複合体形成 / タンパク質分離・回収 / 糸状菌の固定化
Research Abstract	本研究の目的は、通常の溶液重合と同等の操作で、水可溶性グラフト又はブロック共重合体と同じ物性を持つ高分子包括ナノ架橋体(PENG)を多量・安価に合成するための方法を確立することである。そのために、(1)中性高分子網目に高分子酸を包括した系と(2)酸性高分子網目に中性高分子を包括した系を対象として研究 ...

Research Products of this project	Journal Article (16 results, of which Peer Reviewed: 7 results) Presentation (1 results) Remarks (1 results)

3. Molecular Level Study of Intra- and Inter-Particle Intractions in Polyelectrolyte Nanogel Systems

Research Project

Research Category	Grant-in-Aid for Scientific Research (B)
Research Field	Polymer/Textile materials
Research Institution	University of Tsukuba
Principal Investigator	KOKUFUTA Etsuo University of Tsukuba, Graduate School of Life and Environmental Sciences, Professor
Project Period (FY)	2003 – 2005Completed
Keywords	polyelectrolyte / nanogel particle / bulk gel / complex formation / dynamic light scattering / static light scattering / electrophoretic light scattering
Research Abstract	This research project aims to elucidate at the molecular level the nature of volume-phase transitions in polyelectrolyte gels. Our experimental strate ...

Research Products of this project	Journal Article (18 results) Publications (6 results)

4. Study on Volume-Phase Transition in Polyelectrolyte Gels at the Molecular Level

Research Project

Research Category	Grant-in-Aid for Scientific Research (A)
Research Field	高分子構造・物性(含繊維)
Research Institution	University of Tsukuba
Principal Investigator	KOKUFUTA Etsuo University of Tsukuba, Institute of Applied Biochemistry, Professor
Project Period (FY)	1999 – 2002Completed
Keywords	Polyelectrolytes Gels / Charge Distribution / Swelling Force / Electrostatic Repulsion / Hydrophobic Interaction / Hydrogen Bonding / Flory's Model / Katchalsky's Model
Research Abstract	The purpose of this study is to experimentally demonstrate that the volume-phase transition in polyelectrolyte gels can be explained by our hypothesiz ...

Research Products of this project	Publications (57 results)

5. Design of Molecular Pacemaker with a Built-in Self-Oscillating Circuit

Research Project

Research Category	Grant-in-Aid for Scientific Research on Priority Areas
Review Section	Science and Engineering
Research Institution	The University of Tokyo (2001-2002) University of Tsukuba (1999-2000)
Principal Investigator	YOSHIDA Ryo The University of Tokyo, Graduate School of Engineering, Associate Professor
Project Period (FY)	1998 – 2002Completed
Keywords	Polymer Gels / Stimuli-responsive polymer / Biomimetics / Interlligent materials / Actuator / Nonlinear chemistry / Oscillating reaction / Self-oscillation
Research Abstract	In conventional actuating systems using stimuli-responsive gels, "on-off" switching of external stimuli is essential to instigate the action of the ge ...

Research Products of this project	Publications (48 results)

6. N-アルキルアクリルアミドモノマーを用いた乳化重合機構の実験科学的研究

Research Project

Research Category	Grant-in-Aid for Exploratory Research
Research Field	高分子合成
Research Institution	University of Tsukuba
Principal Investigator	国府田悦男筑波大学, 応用生物化学系, 教授
Project Period (FY)	1997 – 1999Completed
Keywords	高分子微粒子 / N-アルキルアクリルアミド / ポリビニルアルコール / 動的光散乱法 / 静的光散乱法 / 電気泳動光散乱法 / 電位差滴定 / 乳化重合法
Research Abstract	高分子微粒子は、その応用・用途の枠を急速に拡大しつつあり、数多くの研究・開発がなされている。その際、最も多く用いられる合成法は乳化重合法であり、重合速度が速く、高分子量のポリマーが得られ、さらに分散性が高い生成物が得やすい等の理由から、工業規模でもこの方法が数多く採用されている。他方、重合機構につい ...

Research Products of this project	Publications (8 results)

7. Preparation of a Biochemo-Mechanical Valve Consisting of a Thin Membrane Whose Pore Were Filled

Research Project

Research Category	Grant-in-Aid for Scientific Research (A)
Research Field	Biomedical engineering/Biological material science
Research Institution	University of Tsukuba
Principal Investigator	KOKUFUTA Etsuo Institute of Applied Biochemistry, University of Tsukuba Professor
Project Period (FY)	1996 – 1998Completed
Keywords	gel / gel-entrapped enzyme / volume phase transition / biochemo-mechanical system / biochemo-mechanical valve / porous thin membrane / liquid permeation control
Research Abstract	A biochemo-mechanical system consisting of gel-entrapped enzymes would be capable of converting biochemical energy created as a result of an enzyme re ...

Research Products of this project	Publications (28 results)

8. Structure and Enzymatic Activity of an Intramolecular Complex of Enzyme with Polyelectrolyte

Research Project

Research Category	Grant-in-Aid for Scientific Research (B)
Research Field	高分子合成
Research Institution	University of Tsukuba
Principal Investigator	KOKUFUTA Etsuo Institute of Applied Biochemostry, University of Tsukuba Professor
Project Period (FY)	1996 – 1998Completed
Keywords	protein / polyelectrolyte / water-solube polymer / poly (ethylene glycol) / laser-light scattering / electrophoretic light scattering / complex formation mechanism / intrapolymer complex
Research Abstract	Complexation of proteins with polyelectrolytes is interesting from two points of view. The first concerns the way in which the polymers interact with ...

Research Products of this project	Publications (10 results)

9. Animal Experiments to Assess Toxicity Following Subcutaneous Administration of N-Isopropylacrylamide Gels Having Biochemo-Mechanical Function

Research Project

Research Category	Grant-in-Aid for General Scientific Research (C)
Research Field	Biomedical engineering/Biological material science
Research Institution	University of Tsukuba
Principal Investigator	KOKUFUTA Etsuo University of Tsukuba, Institute of Applied Biochemistry, Professor
Project Period (FY)	1994 – 1995Completed
Keywords	N-Isopropylacrylamide / biomaterials / neurotoxicity / animal experiments
Research Abstract	Hydrogels consisting of N-Isopropylacrylamide (NIPAAm) undergo a thermosensitive and discontinuous volume-phase transition (I.e., volume collapse) at ...

10. Study on Complexation of Proteins with Polyelectrolytes

Research Project

Research Category	Grant-in-Aid for international Scientific Research
Research Institution	University of Tsukuba
Principal Investigator	KOKUFUTA Etsuo Institute of Applied Biochemistry, University of Tsukuba, Professor 國府田悦男 (1995) 筑波大学, 応用生物化学系, 教授
Project Period (FY)	1993 – 1995Completed
Keywords	Proteins / Polyelectrolytes / Complexation / Turbidimetric titration / Quasi-elastic light scattering / Electrophoretic light scattering / Enzymatic activity / Separation technology
Research Abstract	The complexation of proteins with natural and synthetic polyelectrolytes in an aqueous system in interesting from two points of view. The first concer ...

Research Products of this project	Publications (28 results)