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Research Output 1996 2019

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2019

Advantages of bulge testing and rupture mechanism of glassy polymer films

Kojio, K., Fujimoto, A., Kajiwara, T., Nagano, C., Masuda, S., Cheng, C. H., Nozaki, S., Kamitani, K., Watanabe, H. & Takahara, A., Sep 28 2019, In : polymer. 179, 121632.

Research output: Contribution to journalArticle

Polymethyl Methacrylate
Polymer films
Testing
polycarbonate
Agglomeration

Direct Evaluation of Local Dynamic Viscoelastic Properties of Isotactic Polypropylene Films Based on a Dynamic μ-Beam X-ray Diffraction Method

Nozaki, S., Masuda, S., Cheng, C. H., Nagano, C., Yokomachi, K., Kamitani, K., Aoyama, K., Masunaga, H., Kojio, K. & Takahara, A., Feb 19 2019, In : ACS Macro Letters. 8, 2, p. 218-222 5 p.

Research output: Contribution to journalArticle

Polypropylenes
Synchrotron radiation
X ray diffraction
Mechanical properties
Crystals

Effect of Blend Composition on Scratch Behavior of Polystyrene/Poly(2,6-dimethyl-1,4-phenyleneoxide) Blends

Kojio, K., Kiyoshima, Y., Kajiwara, T., Higaki, Y., Sue, H. J. & Takahara, A., Jan 1 2019, In : Macromolecular Chemistry and Physics. 220, 1, 1800371.

Research output: Contribution to journalArticle

Polyphenylene oxides
Polystyrenes
polystyrene
indentation
Chemical analysis

Lamellar orientation in isotactic polypropylene thin films: a complement study via grazing incidence X-ray diffraction and surface/cross-sectional imaging

Uchida, K., Mita, K., Higaki, Y., Kojio, K. & Takahara, A., Feb 1 2019, In : Polymer Journal. 51, 2, p. 183-188 6 p.

Research output: Contribution to journalArticle

Polypropylenes
Transmission electron microscopy
Imaging techniques
X ray diffraction
Thin films

Microphase-separated structure and mechanical properties of cycloaliphatic diisocyanate-based thiourethane elastomers

Rahmawati, R., Nozaki, S., Kojio, K., Takahara, A., Shinohara, N. & Yamasaki, S., Feb 1 2019, In : Polymer Journal. 51, 2, p. 265-273 9 p.

Research output: Contribution to journalArticle

Elastomers
Polyurethanes
Mechanical properties
Microphase separation
Differential scanning calorimetry

Nanocomposite elastomers composed of silica nanoparticles grafted with a comb-shaped copolymer Brush

Shimamoto, H., Cheng, C. H., Kamitani, K., Kojio, K., Higaki, Y. & Takahara, A., Aug 13 2019, In : Macromolecules. 52, 15, p. 5963-5970 8 p.

Research output: Contribution to journalArticle

Rubber films
Free radical reactions
Elastomers
Acrylic monomers
Dendrimers

Pre-Vulcanization of Large and Small Natural Rubber Latex Particles: Film-Forming Behavior and Mechanical Properties

Sriring, M., Nimpaiboon, A., Dechnarong, N., Kumarn, S., Higaki, Y., Kojio, K., Takahara, A., Ho, C. C. & Sakdapipanich, J., Jan 1 2019, (Accepted/In press) In : Macromolecular Materials and Engineering. 1900283.

Research output: Contribution to journalArticle

Vulcanization
Rubber
Latex
Latexes
Particles (particulate matter)
2018
1 Citation (Scopus)

In situ synchrotron radiation X-ray diffraction studies on molecular aggregation structure of nylon 12 films during bulge testing

Kojio, K., Nagano, C., Fujimoto, A., Nozaki, S., Yokomachi, K., Kamitani, K., Watanabe, H. & Takahara, A., Jan 1 2018, In : Soft Matter. 14, 9, p. 1659-1664 6 p.

Research output: Contribution to journalArticle

Nylon (trademark)
Synchrotron radiation
synchrotron radiation
molecular structure
Agglomeration

Synthesis of a bio-inspired catechol/phosphorylcholine surface modifier and characterization of its surface properties

Zhang, Y., Hirai, T., Ma, W., Higaki, Y., Kojio, K. & Takahara, A., Jan 1 2018, In : Journal of Polymer Science, Part A: Polymer Chemistry. 56, 1, p. 38-49 12 p.

Research output: Contribution to journalArticle

Phosphorylcholine
Surface properties
Adhesion
Biofouling
Thin films
2017

Development of novel polyurethanes with high elasticity and durability based on a cycloaliphatic diisocyanate controlled the stereoisomer structure

Yamasaki, S., Morita, H., Kuwamura, G., Hasegawa, D. & Kojio, K., Jan 1 2017, In : Nihon Reoroji Gakkaishi. 45, 5, p. 205-207 3 p.

Research output: Contribution to journalArticle

diisocyanates
Stereoisomerism
Polyurethanes
durability
Elasticity
10 Citations (Scopus)

Effect of chain architecture of polyol with secondary hydroxyl group on aggregation structure and mechanical properties of polyurethane elastomer

Nozaki, S., Hirai, T., Higaki, Y., Yoshinaga, K., Kojio, K. & Takahara, A., May 5 2017, In : Polymer. 116, p. 423-428 6 p.

Research output: Contribution to journalArticle

Elastomers
Polyurethanes
Polyols
Hydroxyl Radical
Agglomeration
1 Citation (Scopus)

Effect of molecular mobility of pre-ordered phase on crystallization in microphase-separated lamellar morphology of strongly segregated crystalline-crystalline diblock copolymers

Nojima, S., Higaki, Y., Kaetsu, K., Ishige, R., Ohta, N., Masunaga, H., Hirai, T., Kojio, K. & Takahara, A., May 5 2017, In : polymer. 116, p. 403-411 9 p.

Research output: Contribution to journalArticle

Crystallization
Polyethylene glycols
Block copolymers
Crystalline materials
Crystals
1 Citation (Scopus)

High performance polyurethane elastomers using new cyclaliphatic diisocyanate

Yamasaki, S., Kuwamura, G., Morita, H., Hasegawa, D., Kojio, K. & Takahara, A., Jan 1 2017, In : Nihon Reoroji Gakkaishi. 45, 5, p. 261-268 8 p.

Research output: Contribution to journalArticle

Elastomers
diisocyanates
Polyurethanes
elastomers
Polyols
14 Citations (Scopus)

Superior Properties of Polyurethane Elastomers Synthesized with Aliphatic Diisocyanate Bearing a Symmetric Structure

Nozaki, S., Masuda, S., Kamitani, K., Kojio, K., Takahara, A., Kuwamura, G., Hasegawa, D., Moorthi, K., Mita, K. & Yamasaki, S., Feb 14 2017, In : Macromolecules. 50, 3, p. 1008-1015 8 p.

Research output: Contribution to journalArticle

Bearings (structural)
Elastomers
Polyurethanes
Mechanical properties
Glycols
2016
6 Citations (Scopus)

An effect of surface segregation of polyhedral oligomeric silsesquioxanes on surface physical properties of acrylic hard coating materials

Chouwatat, P., Nojima, S., Higaki, Y., Kojio, K., Hirai, T., Kotaki, M. & Takahara, A., Feb 10 2016, In : polymer. 84, p. 81-88 8 p.

Research output: Contribution to journalArticle

Surface segregation
Hard coatings
Acrylics
Physical properties
Coatings
4 Citations (Scopus)

Crystallization-induced structure fluctuation of crystallized microdomain structure composed of strongly segregated crystalline-crystalline diblock copolymers

Nojima, S., Higaki, Y., Ishige, R., Kabayama, H., Ohta, N., Masunaga, H., Hirai, T., Kojio, K. & Takahara, A., Oct 12 2016, In : polymer. 102, p. 256-265 10 p.

Research output: Contribution to journalArticle

Crystallization
Polyethylene glycols
Block copolymers
Crystalline materials
Crystals

Front-line polymer science: Current polyurethane science C

Kojio, K., May 1 2016, In : Kobunshi. 65, 5, p. 233-237 5 p.

Research output: Contribution to journalArticle

Polyurethanes
Polymers
Synchrotron radiation
X rays
Diffraction
6 Citations (Scopus)

Solvent free oxidative coupling polymerization of 3-hexylthiophene (3HT) in the presence of FeCl3 particles

Hirai, T., Nagae, Y., White, K. L., Kamitani, K., Kido, M., Uchiyama, T., Nishibori, M., Konishi, Y., Yokomachi, K., Sugimoto, R., Saigo, K., Ohishi, T., Higaki, Y., Kojio, K. & Takahara, A., Jan 1 2016, In : RSC Advances. 6, 113, p. 111993-111996 4 p.

Research output: Contribution to journalArticle

Polymerization
Molecules
4 Citations (Scopus)

Supramolecular network polymers formed from polyamidine and carboxy-terminated telechelic poly(n-butyl acrylate) via amidinium-carboxylate salt bridges

Furusho, Y., Endo, T., Higaki, K., Kaetsu, K., Higaki, Y., Kojio, K. & Takahara, A., Jul 15 2016, In : Journal of Polymer Science, Part A: Polymer Chemistry. 54, 14, p. 2148-2155 8 p.

Research output: Contribution to journalArticle

Polymers
Fluidity
Salts
Amidines
Polyethyleneimine
2015
Depolarization
Brushes
CCD cameras
adhesion
Polymer films
2 Citations (Scopus)

Improvement of the low-temperature property of aliphatic polycarbonate glycols-based polyurethane elastomers

Kojio, K., Furukawa, M., Shimada, M., Shimada, M., Komatsu, T., Nozaki, S., Motokucho, S. & Yoshinaga, K., Jan 1 2015, In : Science of Advanced Materials. 7, 5, p. 934-939 6 p.

Research output: Contribution to journalArticle

polycarbonate
Elastomers
Low temperature properties
Glycols
Polyurethanes

Molecular aggregation structure of a segmented poly(urethane-urea) elastomer derived from an amino acid-based diisocyanate

Hioaki, Y., Suzuki, K., Kojio, K. & Takahara, A., Jan 1 2015, In : KOBUNSHI RONBUNSHU. 72, 1, p. 31-36 6 p.

Research output: Contribution to journalArticle

Elastomers
Biodegradability
Urethane
Urea
urea

Molecular Aggregation Structure of a Segmented Poly(urethane-urea) Elastomer Derived from an Amino Acid-Based Diisocyanate

Translated title of the contribution: Molecular Aggregation Structure of a Segmented Poly(urethane-urea) Elastomer Derived from an Amino Acid-Based Diisocyanate檜垣勇次, 鈴木研, 小椎尾謙 & 高原淳, 2015, In : Kobunshi Ronbunshu. 72, 1, p. 31-36 6 p.

Research output: Contribution to journalArticle

Elastomers
Biodegradability
Urethane
Urea
urea
16 Citations (Scopus)

pH-Responsive and selective protein adsorption on an amino acid-based zwitterionic polymer surface

Fujii, S., Kido, M., Sato, M., Higaki, Y., Hirai, T., Ohta, N., Kojio, K. & Takahara, A., Oct 21 2015, In : Polymer Chemistry. 6, 39, p. 7053-7059 7 p.

Research output: Contribution to journalArticle

Adsorption
Amino acids
Glutamic Acid
Polymers
Carboxylic Acids
Technical presentations
Fibers
9 Citations (Scopus)

X-ray absorption fine structure study on the role of solvent on polymerization of 3-hexylthiophene with solid FeCl 3 particles

Hirai, T., Sato, M., Kido, M., Nagae, Y., Kaetsu, K., Kiyoshima, Y., Fujii, S., Ohishi, T., White, K. L., Higaki, Y., Teraoka, Y., Nishibori, M., Kamitani, K., Hanada, K., Sugiyama, T., Sugimoto, R., Saigo, K., Kojio, K. & Takahara, A., Jan 1 2015, In : Journal of Polymer Science, Part A: Polymer Chemistry. 53, 18, p. 2075-2078 4 p.

Research output: Contribution to journalArticle

X ray absorption
Polymers
Polymerization
Cations
Positive ions
2014

Crystallization behavior of hard segment in polyurethane elastomers

Kojio, K., Matsumura, S., Nozaki, S., Motokucho, S., Furukawa, M., Yoshinaga, K. & Takahara, A., Jan 1 2014, In : KOBUNSHI RONBUNSHU. 71, 11, p. 608-614 7 p.

Research output: Contribution to journalArticle

Thymidine Monophosphate
Elastomers
Propane
Glycols
Polyurethanes
1 Citation (Scopus)

Inclusion of fullerene in polymer chains grafted on silica nanoparticles in an organic solvent

Yoshinaga, K., Yang, Y., Ohno, T., Motokucho, S. & Kojio, K., Jan 1 2014, In : Polymer Journal. 46, 9, p. 623-627 5 p.

Research output: Contribution to journalArticle

Fullerenes
Silicon Dioxide
Organic solvents
Polymers
Silica

Microphase-separated structure and dynamic viscoelastic properties of polyurethanes elastomers prepared at various temperatures and cross-linking agent contents

Kojio, K., Matsumura, S., Komatsu, T., Nozaki, S., Motokucho, S., Furukawa, M. & Yoshinaga, K., Jan 1 2014, In : Nihon Reoroji Gakkaishi. 42, 2, p. 143-149 7 p.

Research output: Contribution to journalArticle

Elastomers
Polyurethanes
elastomers
Propane
propane

Synthesis of ZnO nanoparticles using reverse micelles of block copolymer hybridized with ZnO/PMMA

Yoshinaga, K., Yonezawa, A., Motokucho, S. & Kojio, K., Dec 1 2014, In : Kobunshi Ronbunshu. 71, 12, p. 644-650 7 p.

Research output: Contribution to journalArticle

Micelles
Block copolymers
Nanoparticles
carbopol 940
Toluene
2013
3 Citations (Scopus)

Physical properties of poly(tetrahydrofuran)-block-poly(2-ethyl-2- oxazoline) triblock copolymer

Motokucho, S., Furukawa, M., Kawashima, M., Kojio, K. & Yoshinaga, K., Nov 1 2013, In : Polymer Journal. 45, 11, p. 1115-1119 5 p.

Research output: Contribution to journalArticle

Block copolymers
Physical properties
Microphase separation
Mechanical properties
Tensile testing
23 Citations (Scopus)

Porous In2O3 powders prepared by ultrasonic-spray pyrolysis as a NO2-sensing material: Utilization of polymethylmethacrylate microspheres synthesized by ultrasonic-assisted emulsion polymerization as a template

Hyodo, T., Furuno, S. I., Fujii, E., Matsuo, K., Motokucho, S., Kojio, K. & Shimizu, Y., Jan 1 2013, In : Sensors and Actuators, B: Chemical. 187, p. 495-502 8 p.

Research output: Contribution to journalArticle

Spray pyrolysis
Emulsion polymerization
Polymethyl Methacrylate
Microspheres
Powders
2012
2 Citations (Scopus)

Effective dispersion of fullerene with methacrylate copolymer in organic solvent and poly(methyl methacrylate)

Yoshinaga, K., Motokucho, S., Kojio, K. & Nakai, A., Aug 1 2012, In : Colloid and Polymer Science. 290, 12, p. 1221-1226 6 p.

Research output: Contribution to journalArticle

Fullerenes
Methacrylates
Polymethyl Methacrylate
Polymethyl methacrylates
polymethyl methacrylate

Influence of side group contents of polycarbonate glycol on aggregation structures & mechanical properties of polyurethane elastomers

Kojio, K., Furukawa, M., Motokucho, S., MIzokami, M. & Yoshinaga, K., 2012, In : International Polymer Science and Technology. 39, 9

Research output: Contribution to journalArticle

polycarbonate
Elastomers
Glycols
Polyurethanes
Polycarbonates
5 Citations (Scopus)

Room temperature magnetoresistance in a polyimide-Co granular film synthesized by vapor deposition polymerization

Suzuki, K. Z., Yanagihara, H., Niizeki, T., Kojio, K. & Kita, E., Nov 26 2012, In : Applied Physics Letters. 101, 22, 222401.

Research output: Contribution to journalArticle

polyimides
polymerization
vapor deposition
room temperature
matrices
9 Citations (Scopus)

The effect of cross-linking density and dangling chains on surface molecular mobility of network polyurethanes

Kojio, K., Furukawa, M., Matsumura, S., Motokucho, S., Osajima, T. & Yoshinaga, K., Aug 1 2012, In : Polymer Chemistry. 3, 8, p. 2287-2292 6 p.

Research output: Contribution to journalArticle

Polyurethanes
Microscopic examination
Atomic Force Microscopy
Relaxation processes
Viscoelasticity
2011
30 Citations (Scopus)

Simultaneous small-angle X-ray scattering/wide-angle X-ray diffraction study of the microdomain structure of polyurethane elastomers during mechanical deformation

Kojio, K., Matsuo, K., Motokucho, S., Yoshinaga, K., Shimodaira, Y. & Kimura, K., Aug 1 2011, In : Polymer Journal. 43, 8, p. 692-699 8 p.

Research output: Contribution to journalArticle

Elastomers
Polyurethanes
X ray scattering
X ray diffraction
Propane
2010
19 Citations (Scopus)

Surface effects on the thin film morphology of block copolymers with bulk order-order transitions

Sohn, K. E., Kojio, K., Berry, B. C., Karim, A., Coffin, R. C., Bazan, G. C., Kramer, E. J., Sprung, M. & Wang, J., Apr 13 2010, In : Macromolecules. 43, 7, p. 3406-3414 9 p.

Research output: Contribution to journalArticle

Styrene
Block copolymers
Thin films
Monolayers
Ethylene
2009
1 Citation (Scopus)

Chain and mirophase-separated structures of ultrathin polyurethane films

Kojio, K., Uchiba, Y., Yamamoto, Y., Motokucho, S. & Furukawa, M., Jan 1 2009, In : Journal of Physics: Conference Series. 184, 012028.

Research output: Contribution to journalArticle

film thickness
coating
atomic force microscopy
hydrogen
matrices
1 Citation (Scopus)

Effect of polymer glycols on micro-aggregation structure and mechanical properties of Spherulite size graded polyurethane elastomers

Kongpun, T., Kojio, K. & Furukawa, M., Aug 5 2009, In : Journal of Applied Polymer Science. 113, 3, p. 1454-1461 8 p.

Research output: Contribution to journalArticle

Elastomers
Glycols
Polyurethanes
Polymers
Agglomeration
5 Citations (Scopus)

High performance polyamide 6 fibers using polycarbonate based thermoplastic polyurethane thin film Coatings- A novel method

John, B., Kojio, K. & Furukawa, M., Jul 20 2009, In : Polymer Journal. 41, 4, p. 319-326 8 p.

Research output: Contribution to journalArticle

polycarbonate
Polyurethanes
Polycarbonates
Polyamides
Thermoplastics
6 Citations (Scopus)

Polyamide 6 fibers with superior mechanical properties: TPU coating techniques

John, B., Motokucho, S., Kojio, K. & Furukawa, M., Jan 1 2009, In : Journal of Fiber Science and Technology. 65, 9, p. 236-240 5 p.

Research output: Contribution to journalArticle

Polyurethanes
Coating techniques
Polyamides
Thermoplastics
Mechanical properties
55 Citations (Scopus)

Structure-mechanical property relationships for polycarbonate urethane elastomers with novel soft segments

Kojio, K., Furukawa, M., Motokucho, S., Shimada, M. & Sakai, M., Nov 10 2009, In : Macromolecules. 42, 21, p. 8322-8327 6 p.

Research output: Contribution to journalArticle

polycarbonate
Elastomers
Glycols
Urethane
Polycarbonates
28 Citations (Scopus)

Synthesis and properties of highly hydrophilic polyurethane based on diisocyanate with ether group

Kojio, K., Mitsui, Y. & Furukawa, M., Jul 17 2009, In : polymer. 50, 15, p. 3693-3697 5 p.

Research output: Contribution to journalArticle

Elastomers
Polyurethanes
Ether
Ethers
UCON 50-HB-5100
34 Citations (Scopus)

The microphase-separated structure of polyurethane bulk and thin films

Kojio, K., Kugumiya, S., Uchiba, Y., Nishino, Y. & Furukawa, M., Apr 13 2009, In : Polymer Journal. 41, 2, p. 118-124 7 p.

Research output: Contribution to journalArticle

Polyurethanes
Film thickness
Thin films
Atomic force microscopy
Glycols
2008
27 Citations (Scopus)

Effect of side groups of polymer glycol on microphase-separated structure and mechanical properties of polyurethane elastomers

Kojio, K., Nakamura, S. & Furukawa, M., Oct 1 2008, In : Journal of Polymer Science, Part B: Polymer Physics. 46, 19, p. 2054-2063 10 p.

Research output: Contribution to journalArticle

Elastomers
Glycols
Polyurethanes
elastomers
glycols

Microphase-separated structure and rheological properties of polyurethanes

Kojio, K., Dec 1 2008, In : Nihon Reoroji Gakkaishi. 36, 5, p. 229-234 6 p.

Research output: Contribution to journalArticle

Polyurethanes
Elastomers
Viscosity
elastomers
Strain hardening
12 Citations (Scopus)

Microphase separation of bulk and ultrathin films of polyurethane elastomers

Furukawa, M., Kojio, K., Kugumiya, S., Uchiba, Y. & Mitsui, Y., Jun 1 2008, In : Macromolecular Symposia. 267, 1, p. 9-15 7 p.

Research output: Contribution to journalArticle

Elastomers
Microphase separation
Polyurethanes
Ultrathin films
elastomers
2007
14 Citations (Scopus)

Depression of microphase-separated domain size of polyurethanes in confined geometry

Kojio, K., Uchiba, Y., Mitsui, Y., Furukawa, M., Sasaki, S., Matsunaga, H. & Okuda, H., Apr 17 2007, In : Macromolecules. 40, 8, p. 2625-2628 4 p.

Research output: Contribution to journalArticle

Polyurethanes
Film thickness
Geometry
Microphase separation
Urethane
46 Citations (Scopus)

Effects of aggregation structure on rheological properties of thermoplastic polyurethanes

Yamasaki, S., Nishiguchi, D., Kojio, K. & Furukawa, M., Jul 27 2007, In : Polymer. 48, 16, p. 4793-4803 11 p.

Research output: Contribution to journalArticle

Polyurethanes
Thermoplastics
Agglomeration
Temperature
Elastic moduli