| 초록 |
In this work, conversion in the structural orientation from an amphiphilic crystalline polymer to a highly ordered microphase-separated lamellar structure on a hydrophobic surface has been investigated. By surface graft polymerization of poly(ethylene glycol)behenyl ether methacrylate onto poly(trimethylsilyl) propyne in the presence of allylamine, resulting material could effectively improve the CO2 capture property of the membranes. The role of allylamine is crucial for controlling the crystalline phase, configuration, and permeation properties. High CO2 permeability of 501 Barrer and a CO2 /N2 ideal selectivity of 77.2 are obtained with optimized reaction conditions, which exceed the Robeson upper bound limit. Such result is noteworthy for a membrane fabricated via a simple surface modification method. |
