To Clarify the Molecular-Theoretical Reasons Why Aromatic Rigid Polymers Exhibit Ultra-High Moduli

阐明芳香族硬质聚合物表现出超高模量的分子理论原因

• 批准号: 08455456
• 负责人: TASHIRO Kohji
• 金额: $ 4.99万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08455456/
• 关键词: Aromatic Polymers; Structure; Mechanical Properties; Crystal Structure; X-ray Structure Analysis; Electron Diffraction; Computer Simulation; Supercritical Fluid Chromatography; 超高弾性率ポリマー; X線解折; ポリ-p-フェニレンベンゾビスオキサゾール; ポリ-p-フェニレンベンゾビスチアゾール; 剛直高分

Many attentions have been paid on aromatic rigid polymers because of their excellent mechanical properties. In order to improve these properties furthermore, we need to collect the highly reliable data of "structure"and "interactions"of polymer crystals as the limiting state of bulk polymer materials and to clarify the intimate relationship between the structure and mechanical properties from the molecular theoretical point of view. We carried out the following three items to attain these purposes.(1) We developed a new system of structure analysis of polymer crystals by organizedly combining the X-ray diffraction, electron diffraction, infrared/Raman spectroscopy, computer simulation and so on. And the structure analysis of the strongest poly-p-phenylene benzobisoxazole fiber was successfully performed.(2) Model compounds of aromatic rigid polymers were synthesized and their crystal structures were analyzed by the above-mentioned system.(3) In order to separate the mixture of model compounds of aromatic polymers with different number of monomer sequences, a supercritical fluid chromatography was introduced. As the detectors for this installment, both the Fourier-transform infrared spectrometer and the Visible-Ultraviolet spectrometer were introduced. These detectors made it possible to perform the separation of most kinds of substances.

芳香族刚性聚合物因其优异的力学性能而受到人们的广泛关注。为了进一步提高这些性能，我们需要收集高分子晶体的“结构”和“相互作用”的高度可靠的数据作为本体聚合物材料的极限状态，并从分子理论的角度阐明结构和力学性能之间的密切关系。为实现这些目标，我们开展了以下三项工作。(1)将X射线衍射、电子衍射、红外/拉曼光谱、计算机模拟等有机地结合起来，建立了一套新的聚合物晶体结构分析体系，并成功地对高强度聚对苯撑苯并双恶唑纤维进行了结构分析。(2)利用该体系合成了芳香族刚性聚合物模型化合物，并对其晶体结构进行了分析。(3)为了分离具有不同单体序列数的芳香族聚合物模型化合物的混合物，引入了超临界流体色谱。介绍了傅里叶变换红外光谱仪和可见-紫外光谱仪作为本装置的检测器。这些探测器使大多数物质的分离成为可能。

项目成果

K.Tashiro et al.: "Development of a New Software for the Xray Structural Analysis・・・" J.Polym.Sci.,PartB:Polym.Phys. 35. 1667-1700 (1997)

K.Tashiro 等人：“X 射线结构分析新软件的开发...”J.Polym.Sci.，PartB：Polym.Phys. 35. 1667-1700 (1997)

K.Tashiro et al.: "First Application an of X-ray Imaging Plate System for the Accurate Evaluation of the Crystallite Modulus of Polymers" Macromol.Rapid Commun.17. 633-638 (1996)

K.Tashiro 等人：“首次应用 X 射线成像板系统精确评估聚合物的微晶模量”Macromol.Rapid Commun.17。

K.Tashiro, M.Kobayashi, T.Kawai, and K.Yoshino: "Crystal structural change in poly (3-alkyl thiophene) s induced by iodine doping as studied by an organized combination of X-ray diffraction, infrared/Raman spectroscopy and computer simulation techniques."

K.Tashiro、M.Kobayashi、T.Kawai 和 K.Yoshino：“通过 X 射线衍射、红外/拉曼光谱的有机组合研究碘掺杂引起的聚（3-烷基噻吩）晶体结构变化

K.Tashiro: "Recwnt Development in Crystal Structure Analysis of Synthetic Polymers" Journal of Crystallography, Japan. 39. 168-178 (1997)

K.Tashiro：“合成聚合物晶体结构分析的最新进展”晶体学杂志，日本。

K.Tashiro: "Molecular Theoretical Study on the Intimate Relationship between Structure and Mechanical Properties of Polymer Crystals" Polymer. 37. 1775-1786 (1996)

K.Tashiro：《聚合物晶体结构与机械性能之间密切关系的分子理论研究》聚合物。