Characterization of Polymer Thin Films with ISTS

使用 ISTS 表征聚合物薄膜

• 批准号: 11650921
• 负责人: YAMASHITA Takashi
• 金额: $ 2.43万
• 依托单位: Tokyo University of Science (2000-2001)The University of Tokyo (1999)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650921/
• 关键词: Transient Grating; Polymide; Gel; Young's Module; Phonon; 光熱変換; 薄膜; 力学物性; 感光性; 過渡回析格子

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 chainsYoung'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

进行了iSTS的测量多晶膜以获得其机械性能，例如Young的模量，倾倒率，结构弛豫和热扩散。柔性聚合物的倾倒速率并不高，因为发现它受聚合物链的局部运动的影响，发现对膜厚度很敏感。这解释说，在薄膜中诱导的自发分子取向小于一个微米。薄膜的这种特性尤其有效地发现了无破坏性，实时在空间选择性方法的ISTS测量中，即使在Photocrosslinking的早期阶段，ISTS的信号也发生了变化，这表明IST反映了小环境的微小环境变化

项目成果

S.Ohkuma, T.Yamashita: "Two-Photon Sensitized Polymerization of vinyl ethes via Electron Transfer of Zn TTBP"J. Photo Polym. Sci. Tech. 15. 23-28 (2002)

S.Ohkuma，T.Yamashita：“通过 Zn TTBP 的电子转移进行乙烯基醚的双光子敏化聚合”J。

K.Ito, T.Yamashita et al.: "Free Volume Change during Volume Phase Transition of Polyacrylamide Gel by Positron Annihilation"J. Polym. Sci B, Polym. Phys. 38. 922-933 (2000)

K.Ito, T.Yamashita 等人：“通过正电子湮灭在聚丙烯酰胺凝胶的体积相变过程中自由体积变化”J。

S. Ohkuma, T. Yamashita: "Two-Photon Sensitized Polymerization of vinyl Ethers via Electron Transfer of ZnTTBP"J. PhotoPlymer Sci. Tech.. 15. 23-28 (2002)

S. Ohkuma，T. Yamashita：“通过 ZnTTBP 电子转移进行乙烯基醚的双光子敏化聚合”J。

K. Ito, Y. Ujihira, T. Yamashita et al.: "Free Volume Change in Volume Phase Transition of Polyacryl-amide Gel asstudied by Positron Annihilation : Salt Dependence"J. Polym. Sci. B Polym. Phys. 37. 2634-2641 (1999)

K. Ito、Y. Ujihira、T. Yamashita 等人：“通过正电子湮灭研究的聚丙烯酰胺凝胶体积相变中的自由体积变化：盐依赖性”J。

山下 俊: "過渡回折格子法によるポリイミド膜の反応と物性"高分子学会. (1999)

Shun Yamashita：“使用瞬态光栅法的聚酰亚胺薄膜的反应和物理性能”高分子科学技术学会（1999）。