Visible light‐induced synthesis of polysulfone‐based graft copolymers by a grafting from approach

Abstract

The synthesis of polysulfone (PSU) graft copolymers by a two-step "grafting from" approach is described. First, a chlorofunctional PSU (PSU-Cl) is formed via chloromethylation of a commercial PSU. The formed polymers are used macroinitiator for the dimanganese decacarbonyl assisted freeradical polymerization of tert-butyl acrylate, methyl methacrylate, and styrene to give the desired graft copolymers. Moreover, amphiphilic graft copolymers are also formed via posthydrolyzation of poly(tert-butyl acrylate) containing graft copolymers. The intermediates at various stages and the ultimate graft copolymers are characterized by various analysis techniques.

Molecular‐scale hybrid membranes: Metal‐oxo cluster crosslinked benzimidazole‐linked polymer membranes for superior H2 purification

“…However, it is difficult and costly to prepare inorganic membranes with uniform composition and precise and controllable proportion, which limits their large‐scale use 12 . Organic membranes, such as traditional polysulfone (PSF) membranes, 13 polyimide (PI) membranes, 14 and polybenzimidazole (PBI) membranes, 15 feature mature synthesis process and simple manufacture. However, conventional organic membranes exhibit a general “trade‐off” effect between permeability and selectivity 16 .…”