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

对聚酰亚胺薄膜进行了ISTS测量，得到了薄膜的杨氏模量、倾倒率、结构弛豫和热扩散等力学性能。柔性聚合物的倾倒速率不太高，这是因为它受聚合物链的局部运动的影响。这说明在厚度小于1 μ m的薄膜中诱导了自发分子取向。用非破坏性的、真实的时空选择性的ISTS测量方法，可以有效地发现薄膜的这种性质。光敏聚酰亚胺的ISTS信号甚至在光交联的早期就发生了变化，表明ISTS反映了聚合物基体微环境的微小变化

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. Morino, T. Yamashita, K. Horie, T. Wada, H. Sasabe: "Third Order Nonlinear Optical Properties of Aromatic Polyisoimides"Reactive Functional Polymers. 44. 183 (2000)

S. Morino、T. Yamashita、K. Horie、T. Wada、H. Sasabe：“芳香族聚异酰亚胺的三阶非线性光学性质”反应性功能聚合物。

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。