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)