Faculty Profiles - NAKANISHI Kazuki

Papers - NAKANISHI Kazuki

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FORMATION OF POROUS GEL MORPHOLOGY BY PHASE-SEPARATION IN GELLING ALKOXY-DERIVED SILICA - PHENOMENOLOGICAL STUDY

KAJI H, NAKANISHI K, SOGA N

JOURNAL OF NON-CRYSTALLINE SOLIDS Vol. 185 ( 1-2 ) page： 18-30 1995.5

Formation of porous gel morphology by phase separation in gelling alkoxy-derived silica. Affinity between silica polymers and solvent.

Kaji H.

Journal of Non-Crystalline Solids Vol. 181 ( 1-2 ) page： 16-26 1995.2

FORMATION OF POROUS GEL MORPHOLOGY BY PHASE-SEPARATION IN GELLING ALKOXY-DERIVED SILICA - AFFINITY BETWEEN SILICA POLYMERS AND SOLVENT

KAJI H, NAKANISHI K, SOGA N

JOURNAL OF NON-CRYSTALLINE SOLIDS Vol. 181 ( 1-2 ) page： 16-26 1995.2

Small-angle X-Ray scattering study of nanopore evolution of macroporous silica gel by solvent exchange Reviewed

Takahashi R, Nakanishi K, Soga N

FARADAY DISCUSSIONS Vol. 101 page： 249 - 263 1995

PHASE-SEPARATION IN SILICA SOL-GEL SYSTEM CONTAINING POLY(ETHYLENE OXIDE) .1. PHASE RELATION AND GEL MORPHOLOGY Reviewed

NAKANISHI K, KOMURA H, TAKAHASHI R, SOGA N

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN Vol. 67 ( 5 ) page： 1327 - 1335 1994.5

In Situ Observation of Phase Separation Processes in Gelling Alkoxy-Derived Silica System by Light Scattering Method Reviewed

Kaji Hironori, Nakanishi Kazuki, Soga Naohiro, Inoue Tadashi, Nemoto Norio

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY Vol. 3 ( 3 ) page： 169 - 188 1994.1

Phase Separation Kinetics in Silica Sol-Gel System Containing Polyethylene Oxide. I. Initial Stage Reviewed

Nakanishi Kazuki, Yamasaki Yuki, Kaji Hironori, Soga Naohiro, Inoue Tadashi, Nemoto Norio

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY Vol. 2 ( 1-3 ) page： 227 - 231 1994.1

THE ROLE OF HYDRATED SILICA, TITANIA, AND ALUMINA IN INDUCING APATITE ON IMPLANTS Reviewed

LI PJ, OHTSUKI C, KOKUBO T, NAKANISHI K, SOGA N, DEGROOT K

JOURNAL OF BIOMEDICAL MATERIALS RESEARCH Vol. 28 ( 1 ) page： 7 - 15 1994.1

Dependence of bone-like apatite formation on structure of silica gel Reviewed

T Kokubo, SB Cho, K Nakanishi, N Soga, C Ohtsuki, T Kitsugi, T Yamamuro, T Nakamura

BIOCERAMICS, VOL 7 page： 49 - 54 1994

INDUCTION AND MORPHOLOGY OF HYDROXYAPATITE, PRECIPITATED FROM METASTABLE SIMULATED BODY-FLUIDS ON SOL-GEL PREPARED SILICA Reviewed

LI PJ, NAKANISHI K, KOKUBO T, DEGROOT K

BIOMATERIALS Vol. 14 ( 13 ) page： 963 - 968 1993.10

PROCESS OF FORMATION OF BONE-LIKE APATITE LAYER ON SILICA-GEL Reviewed

LI P, OHTSUKI C, KOKUBO T, NAKANISHI K, SOGA N, NAKAMURA T, YAMAMURO T

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE Vol. 4 ( 2 ) page： 127 - 131 1993.3

Polymerization-Induced Phase Separation in Silica Sol-Gel Systems Containing Formamide Reviewed

Kaji Hironori, Nakanishi Kazuki, Soga Naohiro

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY Vol. 1 ( 1 ) page： 35 - 46 1993.1

MACROPORE STRUCTURE DESIGN OF SOL-GEL DERIVED SILICA BY SPINODAL DECOMPOSITION Reviewed

NAKANISHI K, KAJI H, SOGA N

POROUS MATERIALS Vol. 31 page： 51 - 60 1993

EFFECTS OF IONS IN AQUEOUS-MEDIA ON HYDROXYAPATITE INDUCTION BY SILICA-GEL AND ITS RELEVANCE TO BIOACTIVITY OF BIOACTIVE GLASSES AND GLASS-CERAMICS Reviewed

LI P, OHTSUKI C, KOKUBO T, NAKANISHI K, SOGA N, NAKAMURA T, YAMAMURO T

JOURNAL OF APPLIED BIOMATERIALS Vol. 4 ( 3 ) page： 221 - 229 1993

DUAL-POROSITY SILICA-GELS BY POLYMER-INCORPORATED SOL-GEL PROCESS Reviewed

K NAKANISHI, R TAKAHASHI, N SOGA

JOURNAL OF NON-CRYSTALLINE SOLIDS Vol. 147 ( C ) page： 291 - 295 1992.10

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

Pore characteristics of silica gels prepared by the polymer-incorporated alkoxide-based sol-gel process have been investigated. Micrometer-range Pore sizes could be controlled by changing several reaction parameters, such as molecular weight or concentration of polymer or reaction temperature, that affect the domain formation process due to an occurrence of phase separation during a gel-forming reaction. The volume fraction and size distribution of nanometer-range pores after a heat treatment were varied by different solvent exchange treatments of a wet gel.

DOI： 10.1016/S0022-3093(05)80632-5

APATITE FORMATION INDUCED BY SILICA-GEL IN A SIMULATED BODY-FLUID Reviewed

PJ LI, C OHTSUKI, T KOKUBO, K NAKANISHI, N SOGA, T NAKAMURA, T YAMAMURO

JOURNAL OF THE AMERICAN CERAMIC SOCIETY Vol. 75 ( 8 ) page： 2094 - 2097 1992.8

Language：English Publishing type：Research paper (scientific journal) Publisher：AMER CERAMIC SOC

It has been confirmed that the essential condition for glasses and glass-ceramics to bond to living bone is,the formation of an apatite layer on their surfaces in the body. It has been proposed that a hydrated silica formed on the surfaces of these materials in the body plays an important role in forming the surface apatite layer, but this has not yet been proved. In the present study, it is shown experimentally that a pure hydrated silica gel can induce apatite formation on its surface in a simulated body fluid when its starting pH is increased from 7.2 to 7.4.

DOI： 10.1111/j.1151-2916.1992.tb04470.x

MODIFICATION OF NANOMETER RANGE PORES IN SILICA-GELS WITH INTERCONNECTED MACROPORES BY SOLVENT EXCHANGE Reviewed

KAJI H, NAKANISHI K, SOGA N, HORII F

JOURNAL OF NON-CRYSTALLINE SOLIDS Vol. 145 ( 1-3 ) page： 80 - 84 1992.8

PHASE-SEPARATION IN SILICA SOL-GEL SYSTEM CONTAINING POLYACRYLIC-ACID .3. EFFECT OF CATALYTIC CONDITION Reviewed

NAKANISHI K, SOGA N

JOURNAL OF NON-CRYSTALLINE SOLIDS Vol. 142 ( 1-2 ) page： 36 - 44 1992.4

PHASE-SEPARATION IN SILICA SOL-GEL SYSTEM CONTAINING POLYACRYLIC-ACID .4. EFFECT OF CHEMICAL ADDITIVES Reviewed

NAKANISHI K, SOGA N

JOURNAL OF NON-CRYSTALLINE SOLIDS Vol. 142 ( 1-2 ) page： 45 - 54 1992.4

SMALL-ANGLE X-RAY-SCATTERING STUDY OF GELLING SILICA ORGANIC POLYMER-SOLUTION - SYSTEMS CONTAINING POLY(SODIUM STYRENE-SULFONATE) Reviewed

NAKANISHI K, SOGA N, MATSUOKA H, ISE N

JOURNAL OF THE AMERICAN CERAMIC SOCIETY Vol. 75 ( 4 ) page： 971 - 975 1992.4

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Papers - NAKANISHI Kazuki