STUDIES ON THE CONTROL OF MICRO-STRUCTURE OF POLYMER BLEND FILM FORMED BY SPINODAL DECOMPOSITION AND THE FUNCTION OF SEPARATION OF THE FILM

旋节线分解形成的聚合物共混膜微观结构控制及膜分离作用的研究

• 批准号: 03650771
• 负责人: MIYAKE Yoshikazu
• 金额: $ 1.22万
• 依托单位: KYOTO INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03650771/
• 关键词: Spinodal decomposition; Phase separation; bi-continuous structure; polymer blend film; casting method; pervaporation method; light scattering; lower critical solution temperature; スケーリング則; ハーベーパレーション法; キャスト膜; スピノ-ダル分解; 動的スケ-リング則

The phase separation process of the spinodal decomposition induced by the temperature of the polymer blend(PMMA/PVAc) possessing a upper critical solution temperature was measured by a light scattering method. Effects of the temperature and component of polymer on the periodic distance and the process of phase separation were studied. Initial stage of the phase separation can be interpreted by the linear theory of spinodal decomposition. Late stage of the phase separation can be correlated by the scaling theory.In the casting process the phase separation induced by the concentration change of the polymer was measured by the light scattering method. The bicontinuous structure in the casting film was formed by the spinodal decomposition The periodic distance was dependent on the evaporation rate and polymer quantity. The periodic distance can be quantitatively correlated by the lapse of the phase separation process. The process can be simulated by the diffusion equation described the phase separation.The polymer blend film possessing the separation function was prepared by the casting method. The periodic distance can be controlled by the evaporation rate. The separation of ethanol and water with this blend film was studied by the pervaporation method. The flux and separation factor can be correlated by the structure of the blend film.

通过光散射方法测量具有上部临界溶液温度的聚合物混合温度（PMMA/PVAC）引起的旋转分解的相分离过程。研究了温度和聚合物成分对周期距离和相分离过程的影响。相位分离的初始阶段可以通过旋律分解的线性理论来解释。相分离的后期可以通过缩放理论相关。在铸造过程中，通过光散射方法测量了由聚合物浓度变化诱导的相分离。铸造膜中的双连续结构是由旋缺座分解形成的，周期距离取决于蒸发速率和聚合物数量。周期距离可以通过相分离过程的失误来定量相关。可以通过描述相分离的扩散方程来模拟该过程。具有分离函数的聚合物混合膜是通过铸造方法制备的。周期距离可以通过蒸发率控制。通过透白化方法研究了乙醇和水与这种混合膜的分离。磁通量和分离因子可以通过混合膜的结构相关。

项目成果

関口 泰広: "キャスト成膜におけるポリマ-ブレンドの相分離構造形成過程" 第5回エラストマ-討論会講演要旨集. 47-50 (1991)

Yasuhiro Sekiguchi：“流延薄膜形成中聚合物共混物的相分离结构形成过程”第五届弹性体研讨会摘要47-50（1991）。