2001 Fiscal Year Final Research Report Summary
Characterization of Polymer Thin Films with ISTS
| Project/Area Number |
11650921
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
高分子構造・物性(含繊維)
|
|---|
| Research Institution | Tokyo University of Science (2000-2001)
The University of Tokyo (1999) |
|---|
Principal Investigator |
YAMASHITA Takashi Tokyo Univ. of Science. Prof., 理工学部, 助教授 (70210416)
|
|---|
| Project Period (FY) |
1999 – 2001
|
| Keywords | Transient Grating / Polymide / Gel / Young's Module / Phonon |
|---|
| Research Abstract |
ISTS measurement of polymide thin films were performed to obtain their mechanical properties such as Young's modulus, dumping rate, structural relaxation and thermal diffusion. The dumping rate of flexible polymer is not too high because it is affected by the local motion of polymer chains
Young's modulus was found to be sensitive to the film thickness. That is explained that the spontaneous molecular orientation is induced in the film with thickness less than one micror. Such properties of thin films is especially effectively found with ISTS measurement that is non destructive, real time spatially selective method,
The ISTS signal of a photosensitive polymide changed even in the early stage of photocrosslinking, showing that the ISTS reflects small change of micro-environment of the polymer matrix
|
