Gas Permeable Mixed Matrix Membranes Composed of a Polymer of Intrinsic Microporosity (PIM-1) and Surface-modified Pearl-necklace Silica Nanoparticles: Effect of Expansion of Nano-space on Gas Permeability

Hiroto Mikami, Shiori Higashi, Takuya Muramoto, Manabu Tanaka, Masafumi Yamato, Hiroyoshi Kawakami
2020 Journal of Photopolymer Science and Technology (Fotoporima Konwakai shi)  
Gas permeable mixed matrix membranes (MMMs) based on a polymer of intrinsic microporosity (PIM-1) was studied focusing on the effect of the expansion of nano-space formed by surface modification on non-porous silica nanoparticles on gas permeability. The silica nanoparticles modified with different generations dendritic moieties were successfully synthesized and characterized by FT-IR and TGA measurements. The CO 2 permeability of the MMMs significantly increased with an increase of loading of
more » ... ease of loading of the particles and addition of the particles with high modification ratio was more effective in improving gas permeability. The expansion of nano-space formed by the surface modification on silica nanoparticles would improve gas diffusion coefficient in MMMs. This was supported by the correlation between the diffusion coefficient in the MMMs and the peaks observed by 129 Xe NMR spectroscopy.
doi:10.2494/photopolymer.33.313 fatcat:xpflpyc2gfholkpggukf7lhtce