Name

List of Dissertation Abstract (Environment and System Sciences

Materials System Course)Supervisor

Abstract

Title

Deformation such as tension, compression, and bending of an object is a fundamental problem, but it
Mizuki

YoshimiADACHITANAKA

Morphological Transition andis especially difficult to tension a twisted object. As a problem like this, in our previous work of thisHysteresis of Rubber Ribbon

laboratory, we have been studying loops and twists using elastic-plastic body ribbon such as paper,with Loopglass ribbon, carbon steel. In this research, we select silicone rubber as an object that does not cause
plastic deformation and study the dynamics of loop -twist transition.

RyoAtsushi

ICHIKAWASUZUKI

Peeling behavior of polymer
films from high adhesive softinterfaces

Peeling behavior with oscillation of peel force was observed in a peeling test using slightly
crosslinked PDMS and polymer films. The peeling of films from PDMS with stickiness wasmeasured under different conditions of the film thickness and the peel velocity. This new
phenomenon will be discussed on the basis of wrinkles that occur between films and PDMS.
Contact charging has become a problem in a wide range of fields in recent years, for example, there isa defective mounting of packaged electronic components. In this research, we used PVA, which isSho ITOAtsushiSUZUKI

Contact charging properties of

positive charging property, and PVB which becomes negative charging property by acetalization ofpoly(vinyl alcohol) resins withPVA, used as a material of package of electronic components. By conducting the contact charging

metalsexperiment using these samples, the objective is to evaluate and consider how the contact charging
potential with the metal changes depending on the ratio of the functional group and the change occurs
due to the change Respectively.
We measured the conductivity of nonionic surfactant-based w/o microemulsion consisting of sorbitanmonolaurate (Span20) and polyoxyethylene sorbitan monooleate (Tween80) at different temperatures.

FumihikoKenji

KIMURA

ARAMAKI

Percolation behavior in nonionicsurfactant-based w/omicroemulsion

The conductivity reached the maximum value due to dynamic percolation with temperature increase
and then decreased with further temperature increase, which has not been reported in the ionicsurfactant-based w/o microemulsion. We clarified the mechanism by structural analysis using small
angle X-ray scattering (SAXS).
Converted to a PDF while retaining the format (font style, size, etc) and uploaded to our school'swebsite.

Self-assemblies formed by surfactants are given mechanical stability by being associated with fibrillar
Formulation of the orthogonal

networks with low molecular gelators. It is expected that these two self-assembled structures develops

SachiKenjiself-assembled systems withhigh functionality by coexisting independently and maintain orthogonality. Therefore, in this study,

KOITANI

ARAMAKIcationic surfactants and low

we tried to prepare systems coexisting with self-assemblies such as lamellar liquid crystal and micellemolecular organo gelator

formed by cationic surfactants and gel-networks, and investigated whether the systems maintainorthogonality.
In white LEDs, phosphor powder is dispersed in a transparent resin. The resin is easy to be degraded

Ippei

Junichi

KOKUBUNTATAMI

Fabrication of nitride phosphorby heating during operation, so lifetime of the white LEDs would decrease. Since SiAlON has goodparticle dispersed transparent α-thermal properties, it is a solution to use transparent SiAlON ceramics as a substitute for resin.

SiAlON ceramic composites

Therefore, the purpose of this research was to prepare phosphor particle dispersed transparent
SiAlON ceramics and evaluate optical properties.
Size-controlled polymer nanoparticles are useful materials in various applications. In this study, we
have successfully synthesized polymer nanoparticles which reflect precisely the size of monomer

Size-Controlled Synthesis ofMiharu
KOSHINO

Mahito ATOBE

Polymer Solid and Hollow
Particles Using Tandem Acoustic
Emulsification

droplets formed by acoustic emulsification without any surfactants. Among the nanoparticles,
polymer hollow particles are particularly attractive materials due to their unique structure. Therefore,
we also tried to prepare size-controlled polymer hollow particles. In this process, the acoustic
emulsification is used to produce fluorous solvent droplets which are templates for polymer capsulesynthesis. TEM analysis revealed that polymer hollow particles were obtained. Since any surfactants
are unnecessary, the acoustic emulsification is indeed a powerful tool for the synthesis of sizecontrolled polymer nanoparticles.
In this study, CD plates with two-layer structure were prepared by different drying temperatures under

Mechanical Strength andthe constant humidity, 80%RH. The weight of PVA solution used for the respective layer was 15g

Fuminori

AtsushiAnisotropic Swelling Behavior of (total 30 g). The “60ºC15g+8ºC15g” indicates that the first and second layer was prepared by dryingSATOSUZUKI

Laminated poly(vinyl alcohol)

at 60ºC and 8ºC, respectively. The tensile strength and the linear swelling ratio were measured. Due toHydrogels

the difference of drying temperature between upper and lower layers, the laminated CD gel showedanisotropic swelling behavior, and the higher mechanical strength.

Improvement in thermal
conductivity of Si3N4 ceramics
MarikoJunichi

SADO

TATAMI

through a low magnetic fieldorientation technique using
composite particles withanisotropic gigantic

Si3N4 ceramics were fabricated by molding in a low magnetic field using graphene-coated Si3N4particles as seeds for β-Si3N4 grain growth. Si3N4 ceramics fabricated using the composite particles
having higher crystallinity showed better c-axis orientation by molding in a low and static magnetic
field, resulting in higher thermal conductivity.

diamagnetism
The design of spherical porous
Masahiro

Motoyuki

HAYAKAWA

IIJIMAsilica composite particles
prepared by mechanicaltreatment and the water drying
properties at particle film surface

The design of composite particles in which silica nanoparticles are coated on silica spherical porous
particles by mechanical treatment was investigated. The influence on the wetting and spreading
behavior of water droplets and the drying behavior on the particle film in which the amount ofnanoparticles added to the porous particles was varied was evaluated.
We have investigated the electrochemical hydrogenation of toluene using a proton exchange
membrane (PEM) reactor for development of organic chemical hydride system. Especially, aninfluence of catalyst materials for a PEM reactor on the by-product formation and product selectivity

Atsushi
FUKAZAWA

Electrochemical Hydrogenation
Mahito ATOBE of Various C-C Double Bonds
Using a PEM Reactorin the hydrogenation of toluene was investigated. On the other hand, we have also carried out
electrochemical asymmetric hydrogenation of monomethyl itaconate in order to expand the versatilityof PEM reactor. In this project, we demonstrated that the used of chiral polyamide as a chiral source
gave relatively high optical yields of the product. This can be regarded as economic and environmentfriendly system because of its operation with mild reaction conditions and reusability of expensive
noble metal catalysts.
In this work, electrochemical synthesis of oligophenylene, and its regioselective and molecularweight control were demonstrated using 1,4-bis(trimethylsilyl)benzene monomer and flow

Kota
FUSHIMI

Regioselective electrochemical
Mahito ATOBE synthesis of oligophenylenes
using electron auxiliary groups

microreactors. This synthetic system enabled regioselective synthesis of oligophenylene without its
deposition. Careful selection of the reaction conditions enabled the control of molecular weight anddistribution of the synthesized oligophenylene. In addition, this method has the major advantage of
not requiring sensitive, expensive, or toxic reagents. Moreover, the reaction could be conducted using
single flow-through operations under very mild conditions.

A typical string-like micelle forming system that has been reported in the past is that many
Misaki FUJIIKenji
ARAMAKI

Formation of silicine surfactant-hydrophobic parts of surfactants are synthesized with alkyl chains, and it is a problem that it is easy

based wormlike micelle being

for individuals to precipitate at low temperature due to high intermolecular attraction there were. In

stable at low temperature

this study, we succeeded in forming low-temperature stable string-like micelles by using a newsilicone surfactant to maintain the solution properties of string-like micelles even at low temperature.
Machining and molding in the manufacturing process of ceramics can be regarded as tribology. InAyuka

Junichi

MATSUGAMITATAMI

Tribology related to machining

order to produce better ceramics, it is important to understand their tribology. In this study, we aimedof AlN ceramics and molding ofto elucidate tribology of machining and molding of ceramics. We evaluated the wear behavior of AlN

SiO2 glass powder

ceramics in both water and air conditions as the model of machining and the friction behavior of
SiO2 glass whose surface condition was changed as the model of molding process.

Shunsuke

Motoyuki

MIZUMOTO

IIJIMA

Elucidation of sulfuric acid

Effect of acrylic silane copolymerized acrylic latex addition on their resistance properties against

resistance mechanism of

sulfuric acid has investigated. The collapse of hardened cement body after corrosion test in sulfuric

hardened cement body by acrylicacid solution has suppressed by the addition of acrylic latex and this effect was remarkable whenlatex copolymerized with acrylic

acrylic latex copolymerized with acrylic silane was added. It was also found that the acrylic latex

silaneexists between the cement particles and effectively bonded the cement particles with acrylic silane.
We investigated interfacial properties and wormlike micelles of amino acid-based gemini surfactant,bis(Nε-lauroyl-L-lysin) sebacamide (12L-8-L12). We measured static surface tensions of solutions atNAU

Kenji

MORITA

ARAMAKI

Formation of wormlike micelles

high and found that cmc was 0.0035mM. We prepared wormlike micelles by 12L-8-by amino acid-based gemini

L12/CTAB/water system. We found that spacer length contributed to cmc and viscosity, indicating

surfactant

that the short spacer chain acts as if separating hydrophilic groups and the long spacer chain acts as ahydrophobic moiety. The wormlike micelles depended on temperature and pH, and gelated at lowpH.