Controlling Morphology of Polymer Blends by Using Spatial and Temporal Modulation

通过空间和时间调制控制聚合物共混物的形态

• 批准号: 13031054
• 负责人: TRAN-CONG-MIYATA Qui
• 金额: $ 28.29万
• 依托单位: Kyoto Institute of Technology, Department of Polymer Science & Engineering
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research on Priority Areas
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13031054/
• 关键词: Polymer Blends; Photodimerization; Phase Separation; Cross-linking Reaction; Sharpening of Length Scale Distribution; Interpenetrating Polymer Networks; 架橋反応; 構造の先鋭化; 相互侵入高分子網目(IPNs); 光架橋; 空間変調; 時間変調; 超格子構造; 構造周期の尖鋭化; 弾性歪の緩和; 時空間制御; 制限された空

The main purpose of this research project is to manipulate and control the morphology (characteristic, length scales and its distribution) of polystyrene/poly (vinyl methyl ether) (PS/PVME) blends using spatial and temporal modulation. For this purpose, ultraviolet light was used as an external modulating source and the polystyrene component of the blends were made photosensitive by labeling with photo-reactive groups such as anthracene (A) and stilbene (S). The following experiments were performed : (1) Phase separation induced by spatially periodic forcing ; (2) Phase separation induced by temporally periodic forcing ; (3) Phase separation induced by reversible cross-linking reaction ; (4) Phase separation manipulated by competing interactions.In summary, morphology of a polymer can be well controlled by the characteristic length scales as well as the characteristic time scales of the external modulation. The elastic stress generated by the chemical reactions couples to critical concentration fluctuations, broadening the length scale distribution of the morphology. The competition between stress-induced broadening and reaction-induced sharpening plays the key role in the resulting morphology.

该研究项目的主要目的是利用空间和时间调制来操纵和控制聚苯乙烯/聚（乙烯基甲基醚）（PS/PVME）共混物的形态（特征、长度尺度及其分布）。为此，使用紫外光作为外部调制源，并通过用蒽 (A) 和二苯乙烯 (S) 等光反应基团进行标记，使共混物的聚苯乙烯成分具有光敏性。进行了以下实验：（1）空间周期性强迫引起的相分离； (2) 时间周期性强迫引起的相分离； (3)可逆交联反应引起的相分离； (4)通过竞争相互作用控制相分离。综上所述，聚合物的形态可以通过外部调制的特征长度尺度以及特征时间尺度得到很好的控制。化学反应产生的弹性应力与临界浓度波动耦合，拓宽了形态的长度尺度分布。应力引起的展宽和反应引起的锐化之间的竞争在最终的形态中起着关键作用。

项目成果

Q.Tran-Cong-Miyata et al.: "Controlling Morphology of Polymer Blends Using Temporally Periodic Forcing"Nature Materials. (Accepted for publication). (2004)

Q.Tran-Cong-Miyata 等人：“使用时间周期强迫控制聚合物共混物的形态”自然材料。

Y.Aoki, T.Norisuye, Q.Tran-Cong-Miyata, S.Nomura, T.Sugimoto: "Dynamic Light Scattering Studies on Network Formation of Bridged Polysilsesquioxanes Catalyzed by Polyoxometalates"Macromolecules. 36(26). 9935-9942 (2003)

Y.Aoki、T.Norisuye、Q.Tran-Cong-Miyata、S.Nomura、T.Sugimoto：“多金属氧酸盐催化桥连聚倍半硅氧烷网络形成的动态光散射研究”大分子。

Q.Tran-Cong-Miyata: "Phase Separation of Polymer Mixtures Induced by Polarization-Selective Chemical Reactions : Spatial Symmetry Breaking and Mode-Selection"Macromolecular Symposia. 160. 91-97 (2000)

Q.Tran-Cong-Miyata：“极化选择性化学反应诱导的聚合物混合物的相分离：空间对称性破缺和模式选择”高分子研讨会。

A.Takamizawa, S.Kajimoto, J.Hobley, H.Fukumura, Q.Tran-Cong: "Ultrafast Laser-Induced Molecular and Morpholo-gical Changes During Spinodal Demixing of Water/2-butoxyethanol/KCl"Phys. Rev. E. 68(2). 020501(R) (2003)

A.Takamizawa、S.Kajimoto、J.Hobley、H.Fukumura、Q.Tran-Cong：“水/2-丁氧基乙醇/KCl 旋节线分层过程中超快激光诱导的分子和形态变化”Phys。

J.Hobley, S.Kajimoto, A.Takami, Q.Tran-Cong, H.Fukumura: "Dynamics of Liquid Structures Relaxation from Criticality After a Nanosecnd Laser Initiated T-Jump in Triethylamine-Water"J.Phys.Chem.B. 107. 11411 (2003)

J.Hobley、S.Kajimoto、A.Takami、Q.Tran-Cong、H.Fukumura：“纳秒激光在三乙胺水中引发 T 跃迁后液体结构从临界松弛的动力学”J.Phys.Chem.B