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Preparation and Swelling Properties of Poly(potassium acrylate-co-acrylamide) Superabsorbent Particles  

손오건 (성균관대학교 화학공학과, 고분자 기술연구소)
심상준 (성균관대학교 화학공학과, 고분자 기술연구소)
이동현 (성균관대학교 화학공학과, 고분자 기술연구소)
이영관 (성균관대학교 화학공학과, 고분자 기술연구소)
김지홍 (성균관대학교 화학공학과, 고분자 기술연구소)
김덕준 (성균관대학교 화학공학과, 고분자 기술연구소)
Publication Information
Polymer(Korea) / v.28, no.1, 2004 , pp. 18-23 More about this Journal
Abstract
Superabsorbent poly(potassium acrylate-co-acrylamide)s were synthesized in particle form using inverse suspension polymerization technique. Mean diameter of the prepared polymer particles decreased from 300 to 50 $\mu\textrm{m}$ with increasing surfactant concentration. The dynamic and equilibrium swelling behaviors during water absorption and drying process were investigated by weight measurement. The swelling ratio of polymer particles in water changed according to not only polymer crosslinking density, but particle size, saline concentration of aqueous medium, and copolymer compositions. Water sorption amount was increased with decreasing particle size, crosslinking agent concentration, and ion concentration in bulk solution. Being different from the water sorption process, the drying process was not significantly affected by particle size, polymer composition, or crosslinking amount.
Keywords
superabsorbent polymers; particle; swelling; drying; crosslinking;
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