Creation of Thermal Response Ordered Mesostructure Polymer Particles Using Diblock Copolymers via 3D Confined Self‐Assembly
Creation of Thermal Response Ordered Mesostructure Polymer Particles Using Diblock Copolymers via 3D Confined Self‐Assembly
复制标题
使用二嵌段共聚物通过 3D 受限自组装创建热响应有序介观结构聚合物颗粒
DOI：
10.1002/macp.202200402
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发表时间：
2023
影响因子：
2.5
通讯作者：
Hayakawa Teruaki
中科院分区：
文献类型：
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作者：
Tong Liang;Nabae Yuta;Hirai Tomoyasu;Yabu Hiroshi;Hayakawa Teruaki
纳米技术和材料科学的进步导致了对具有有序内部和表面介观结构的聚合物颗粒的特定材料功能、制备和设计的需求增加。本文采用三维受限自组装技术制备了四种不同分子量的聚（甲基丙烯酸2，2，2-三氟乙酯）-B-聚（2-乙烯基吡啶）共混物。热退火后，这些球表现出有序的内部和表面的介观结构。分析研究表明，内部介孔结构是由二嵌段共聚物的微相分离性质形成的，而表面上有序介孔的形成是由电子辐照下PTFEMA域的分解引起的。在相同的二嵌段共聚物中使用溶液浇铸和非溶液浇铸方法观察到其他微相分离结构，例如圆柱形和层状结构，表明3D受限环境诱导颗粒中内部有序球形微相分离结构的形成。
Advancements in nanotechnology and materials science have led to an increased demand for specific material functions, preparation, and design of polymer particles with ordered internal and surface mesostructures. In this work, well‐shaped spheres of poly(2,2,2‐trifluoroethyl methacrylate)‐b‐poly(2‐vinylpyridine) with four different molecular weights are prepared by 3D confined self‐assembly. After thermal annealing, these spheres exhibit ordered internal and surface mesostructure. Analytical studies suggest that the internal mesoporous structure is formed by the microphase separation properties of the diblock copolymers, while the formation of ordered mesopores on the surface is caused by the decomposition of the PTFEMA domains under electron irradiation. Other microphase‐separated structures, such as cylindrical and lamellar ones, are observed using solution casting and non‐solution casting methods in the same diblock copolymer, indicating that the 3D confined environment induces the formation of internal ordered spherical microphase‐separated structures in the particles.