||Mixing of immiscible polymers using nanoporous coordination templates
Uemura, Takashi ,
Kaseda, Tetsuya ,
Sasaki, Yotaro ,
Inukai, Munehiro ,
Toriyama, Takaaki ,
Takahara, Atsushi ,
Jinnai, HiroshiKitagawa, Susumu
62015-07-01 , Nature Publishing Group
混ざり合わないポリマーを完全に混ぜる手法を開発 -プラスチックの持つ機能を飛躍的に向上-. 京都大学プレスリリース. 2015-07-02.
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.