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Polymeric phosphonic acid submicrospheres (PPASs) with carboxylic acid cores and phosphonic acid shells are synthesized by distillation-precipitation polymerization. The structure and composition of PPASs are confirmed by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), and energy dispersive X-ray (EDX). The PPASs are then incorporated into sulfonated poly(ether...
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