A5048862316- Surfactants and Colloidal Systems
- Polymer Surface Interaction Studies
- Electrostatics and Colloid Interactions
- Material Dynamics and Properties
- Pickering emulsions and particle stabilization
- Polymer Nanocomposites and Properties
- Rheology and Fluid Dynamics Studies
- Adsorption, diffusion, and thermodynamic properties of materials
- Advanced Polymer Synthesis and Characterization
- Theoretical and Computational Physics
- Diatoms and Algae Research
- Analytical Chemistry and Sensors
- Lipid Membrane Structure and Behavior
- Force Microscopy Techniques and Applications
- Proteins in Food Systems
- Minerals Flotation and Separation Techniques
- Fluid Dynamics and Thin Films
- Mesoporous Materials and Catalysis
- Synthesis and properties of polymers
- Electrochemical Analysis and Applications
- Microfluidic and Capillary Electrophoresis Applications
- Hydrogels: synthesis, properties, applications
- Surface Modification and Superhydrophobicity
- Coagulation and Flocculation Studies
- Material Properties and Processing
Osaka Prefectural Institute of Public Health
2009-2022
Mie University
2010-2020
Ehime University
2005
Kansai University
2004
ShinEtsu Chemical (Japan)
1997-1998
The University of Tokyo
1995-1997
Lviv Polytechnic National University
1996
Nagoya University
1996
University of Wisconsin–Madison
1986
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAdsorption of Polystyrene at the θ TemperatureAkira Takahashi, Masami Kawaguchi, Hideyuki Hirota, and Tadaya KatoCite this: Macromolecules 1980, 13, 4, 884–889Publication Date (Print):July 1, 1980Publication History Published online1 May 2002Published inissue 1 July 1980https://pubs.acs.org/doi/10.1021/ma60076a023https://doi.org/10.1021/ma60076a023research-articleACS PublicationsRequest reuse permissionsArticle Views203Altmetric-Citations69LEARN...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymeric monolayer dynamics at the air/water interface by surface light scatteringMasami Kawaguchi, Bryan B. Sauer, and Hyuk YuCite this: Macromolecules 1989, 22, 4, 1735–1743Publication Date (Print):April 1, 1989Publication History Published online1 May 2002Published inissue 1 April 1989https://pubs.acs.org/doi/10.1021/ma00194a039https://doi.org/10.1021/ma00194a039research-articleACS PublicationsRequest reuse permissionsArticle...
Heterodyne detection of light scattered from capillary waves is used to study the surface properties air–liquid interface. A diffraction grating employed select a precise ripplon wave vector k and provide stable local oscillator field. The optics are designed form real image on surface, thus allowing measurements be reproducible within 5%. power spectrum detected in frequency domain well fitted by Lorentzian profile for range vectors 260≤k≤390 cm−1. shape spectra at each corrected incident...
Nanomaterials tend to agglomerate in aqueous media, resulting inaccurate safety assessment of the biological response these substances. The present study searched for suitable dispersion methods preparation nanomaterial suspensions. Titanium dioxide (TiO2) and zinc oxide (ZnO) nanoparticles were dispersed a biocompatible medium by direct probe-type sonicator indirect cup-type sonicator. Size characterization was completed using dynamic light scattering transmission electron microscopy. A...
Herein, we have reviewed fumed silica suspensions in dispersing fluids, polymer melts, and solutions, focusing on their dispersion stability rheological properties as a function of the surface character powders volume fraction, ϕ. Hydrophilic are well dispersed at ϕ < 0.01 polar fluids or phase states change from sol to gel with increasing Such changes should also be strongly related responses hydrophilic suspensions, which Newtonian flow behavior gel-like elasticity On other hand,...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreferential adsorption of monodisperse polystyrene on silica surfaceMasami Kawaguchi, Ken Maeda, Tadaya Kato, and Akira TakahashiCite this: Macromolecules 1984, 17, 9, 1666–1671Publication Date (Print):September 1, 1984Publication History Published online1 May 2002Published inissue 1 September 1984https://pubs.acs.org/doi/10.1021/ma00139a005https://doi.org/10.1021/ma00139a005research-articleACS PublicationsRequest reuse permissionsArticle...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAdsorption of poly(N-isopropylacrylamide) on silica surfacesTohru Tanahashi, Masami Kawaguchi, Takako Honda, and Akira TakahashiCite this: Macromolecules 1994, 27, 2, 606–607Publication Date (Print):January 1, 1994Publication History Published online1 May 2002Published inissue 1 January 1994https://pubs.acs.org/doi/10.1021/ma00080a040https://doi.org/10.1021/ma00080a040research-articleACS PublicationsRequest reuse permissionsArticle...
Oil in water emulsions were prepared by dispersion of silicone oil aqueous solutions hydroxypropyl methyl cellulose (HPMC) with various molecular weights. The resulting characterized a combination size measurement and rheology techniques as function time elapsed after the preparation. distribution droplets showed little changes time, indicating are stable. droplet increased weight HPMC at fixed concentration HPMC, whereas it decreased an increase constant HPMC. All pseudoplastic flow...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEllipsometric study of polymer monolayers spread at the air-water interface. 1. Thickness monolayersMasami Kawaguchi, Masahiro Tohyama, Yuhji Mutoh, and Akira TakahashiCite this: Langmuir 1988, 4, 2, 407–410Publication Date (Print):March 1, 1988Publication History Published online1 May 2002Published inissue 1 March 1988https://pubs.acs.org/doi/10.1021/la00080a025https://doi.org/10.1021/la00080a025research-articleACS PublicationsRequest reuse...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA surface light scattering study of poly(ethylene oxide) and poly(vinyl acetate) at the air/water heptane/water interfacesBryan B. Sauer, Masami Kawaguchi, Hyuk YuCite this: Macromolecules 1987, 20, 11, 2732–2739Publication Date (Print):November 1, 1987Publication History Published online1 May 2002Published inissue 1 November 1987https://pubs.acs.org/doi/10.1021/ma00177a017https://doi.org/10.1021/ma00177a017research-articleACS PublicationsRequest...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTest of scaling laws describing the concentration dependence surface pressure a polymer monolayerAkira Takahashi, Akira Yoshida, and Masami KawaguchiCite this: Macromolecules 1982, 15, 4, 1196–1198Publication Date (Print):July 1, 1982Publication History Published online1 May 2002Published inissue 1 July 1982https://pubs.acs.org/doi/10.1021/ma00232a047https://doi.org/10.1021/ma00232a047research-articleACS PublicationsRequest reuse permissionsArticle...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular weight dependence of the thickness polystyrene layer adsorbed onto a metal surface in good solvent conditionsMasami Kawaguchi and Akira TakahashiCite this: Macromolecules 1983, 16, 9, 1465–1469Publication Date (Print):September 1, 1983Publication History Published online1 May 2002Published inissue 1 September 1983https://pubs.acs.org/doi/10.1021/ma00243a010https://doi.org/10.1021/ma00243a010research-articleACS PublicationsRequest reuse...
The Wilhelmy plate technique was used to measure the dynamic surface tension of poly(N-isopropylacrylamide)(poly(NIPAM)) at air−water interface as a function poly(NIPAM) concentration and temperature. Initial periods negligible decrease were observed lowest poly(NIPAM). decay rate well interpreted by taking account solution properties under assumption diffusion-controlled adsorption kinetics. experimental data numerically fitted with an empirical Hua−Rosen equation, they in good agreement...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPoly(N-isopropylacrylamide) Films at the Air-Water InterfaceMasami Kawaguchi, Wataru Saito, and Tadaya KatoCite this: Macromolecules 1994, 27, 20, 5882–5884Publication Date (Print):September 1, 1994Publication History Published online1 May 2002Published inissue 1 September 1994https://pubs.acs.org/doi/10.1021/ma00098a049https://doi.org/10.1021/ma00098a049research-articleACS PublicationsRequest reuse permissionsArticle...