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Japanese Science and Technology/ Materials Science 1
Polymers
Japanese Science and Technology/ Materials Science 2
Polymers and Molecules (Monomers)
Ethylenechrolide: CH2=CHCl
Polyethylenechrolide: ・・-CH2-CCl2-CH2-・・Defined as –(CH2-CHCl)n-
Japanese Science and Technology/ Materials Science 3
Practical Usage of Polymers
PlasticsFibersFilmsetc
Japanese Science and Technology/ Materials Science 4
[Background]In 1944 TUAT was founded by the incorporation of two colleges: “Tokyo College of agriculture and Forestry” and “Tokyo Textile College”
→Domestic Center of Textile (Polymer) Science
Polymer Research History in TUAT
Japanese Science and Technology/ Materials Science 5
Current Polymer Research in TUAT
Dept. Biotechnology and life SciencesDept. Applied ChemistryDept. Organic and Polymer Materials
ChemistryDept. Chemical EngineeringBASE…….
Japanese Science and Technology/ Materials Science 6
Typical Fabrication of Polymers: Nylon
Hexadimethyleneamine (aq) + Sebasticdichrolide (CCl4)
Interfacial Polymerization
Japanese Science and Technology/ Materials Science 7
Hollow Capsule with Microns
Fill Species
Coat Species
1. Micro Capsule(cf. Prof. Iso (F. Tech))
Japanese Science and Technology/ Materials Science 8
Fabrication of Microcapsules
Example: Nylon Capsule
*Chloroform
Japanese Science and Technology/ Materials Science 9
Application 1
Air Cleaning
TiO2 Coated Micro Capsule(Optocatalytic Effect and Absorption)
Japanese Science and Technology/ Materials Science 10
Application 2
Aromatic
Controlled Diffusion of Aromatic Species(cf. Agricultural Chemicals)
Japanese Science and Technology/ Materials Science 11
Application 3
Flame Retardant
Fill Flame Retardant Molecules
Japanese Science and Technology/ Materials Science 12
2. Water Absorbing (Swelling) Polymer(cf. Emeritus Prof. Sato (F. Tech))
Before absorption 10sec
30sec 60sec
Japanese Science and Technology/ Materials Science 13
Water Absorption Mechanism
Dissociation of Na+ ions by water molecules
Japanese Science and Technology/ Materials Science 14
Fabrication of Water Absorbing Polymer
Vinyl Polymerization of Sodium Acrylate
Japanese Science and Technology/ Materials Science 15
Practical Uses
DiapersArtificial SnowAgriculture: Polymer Coated Seeds, Soil Improvement…
Japanese Science and Technology/ Materials Science 16
ApplicationOptical Fiber Reinforcement
(water ⇔ Fiber reaction: Degradation)
Japanese Science and Technology/ Materials Science 17
3. Electric Conducting Polymer
(cf. Prof. Ohno (F. Tech) and Prof. Naoi (F. Tech))
PEO (Polyethyleneoxide)
PMEOAnd Many other ….
Japanese Science and Technology/ Materials Science 18
ECD (Electrochromism Display)
BLUE
Japanese Science and Technology/ Materials Science 19
Thin Film Battery
(Fujitsu)
Japanese Science and Technology/ Materials Science 20
4. Piezoelectric Polymer
(cf. Prof. Watanabe (F. Tech.))
PVFD
Polypyrrole
Japanese Science and Technology/ Materials Science 21
How to get Piezoelectricity
Japanese Science and Technology/ Materials Science 22
Thin Speaker
Transparent Speaker
Magnetic Speaker
Japanese Science and Technology/ Materials Science 23
Membrane Type Hydrophone
(Toray)