Mixing of immiscible polymers using nanoporous coordination templates.
Mixing of immiscible polymers using nanoporous coordination templates.
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DOI：
10.1038/ncomms8473
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发表时间：
2015-07-01
影响因子：
16.6
通讯作者：
Kitagawa S
中科院分区：
文献类型：
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作者：
Uemura T;Kaseda T;Sasaki Y;Inukai M;Toriyama T;Takahara A;Jinnai H;Kitagawa S
为了促进基础科学和材料技术的发展，建立不相容物质的混合方法是非常可取的。在这里，我们描述了一种新的协议，用于在分子水平上增容不相容的聚合物，使用多孔性配位聚合物(PCPs)作为可移除模板。在这个过程中，通过将聚苯乙烯(PSt)和聚甲基丙烯酸甲酯(PMMA)的单体在PCP中连续均聚，将聚合物分散在PCP粒子中，得到了典型的不相容聚合物对。随后在螯合剂溶液中溶解PCP骨架，得到在几个纳米范围内均一的PSt/PMMA共混物。由于具有特殊的增容作用，聚合物共混物的热性能比传统的溶剂浇铸共混物有了显著的改善。该方法也适用于溶解度参数不同的聚丙烯腈和聚苯乙烯的增容。为了帮助理解基础科学和开发新材料，不相容聚合物的紧密混合是可取的。在这里，作者成功地使用多孔配位聚合物作为可拆卸模板来增容聚苯乙烯和聚甲基丙烯酸甲酯。
The establishment of methodologies for the mixing of immiscible substances is highly desirable to facilitate the development of fundamental science and materials technology. Herein we describe a new protocol for the compatibilization of immiscible polymers at the molecular level using porous coordination polymers (PCPs) as removable templates. In this process, the typical immiscible polymer pair of polystyrene (PSt) and poly(methyl methacrylate) (PMMA) was prepared via the successive homopolymerizations of their monomers in a PCP to distribute the polymers inside the PCP particles. Subsequent dissolution of the PCP frameworks in a chelator solution affords a PSt/PMMA blend that is homogeneous in the range of several nanometers. Due to the unusual compatibilization, the thermal properties of the polymer blend are remarkably improved compared with the conventional solvent-cast blend. This method is also applicable to the compatibilization of PSt and polyacrylonitrile, which have very different solubility parameters. The intimate mixing of immiscible polymers is desirable both to aid understanding of the fundamental science and for the development of new materials. Here, the authors successfully compatibilize polystyrene and poly(methyl methacrylate) using a porous coordination polymer as a removable template.