Abstract
A new porous polymeric microparticle, poly[4-vinylbenzyltriethylammonium chloride] (P[VBTEA][Cl]), is prepared from the crosslinking polymerization of 4-vinylbenzyltriethylammonium chloride with N,N-methylenebisacrylamide via inverse suspension polymerization using cyclohexane as continuous phase, Span 80-Tween 80 as dispersant, and PEG600 as porogen. Two other microparticles, P[VBTEA][BF4] and P[VBTEA][PF6] are further obtained through ion-exchange. FT-IR, TGA, SEM, and EDS analyzes indicate that these microparticles have good porosity (apparent porosities are 55.0%, 69.7% and 64.3%, respectively), high thermal stability, and large specific surface area, which make them potentially applicable as adsorbent agents. Their CO2 adsorption–desorption performance is investigated. It is observed that such porous polymeric microparticles present high CO2 sorption capability; typically, the CO2 sorption of P[VBTEA][PF6] is 1.38wt% at 25°C and 1bar. Such porous polymeric microparticles are good candidates for CO2 adsorption.
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