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Synthesis and Properties of a Superabsorbent Polymer Prepared by Copolymerization of Sodium Acrylate with Sodium 1‐(Acryloyloxy)propan‐2‐yl Phosphate
Author(s) -
Chen Zhenbin,
Liu Mingzhu,
Qi Xiaohua
Publication year - 2007
Publication title -
macromolecular reaction engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 32
eISSN - 1862-8338
pISSN - 1862-832X
DOI - 10.1002/mren.200600020
Subject(s) - superabsorbent polymer , copolymer , swelling , sodium , monomer , polymer , polymer chemistry , acrylate , materials science , sodium hydroxide , chemical engineering , dispersion (optics) , chemistry , composite material , organic chemistry , engineering , physics , optics , metallurgy
A novel monomer, 1‐(acryloyloxy)propan‐2‐yl phosphoryl dichloride, was synthesized and characterized in this work. Thereafter, the monomer was neutralized with sodium hydroxide and copolymerized with sodium acrylate to obtain a superabsorbent polymer. The superabsorbent polymer was then modified to improve its swelling properties (i.e., the water absorbency under load, the hydrogel strength, the resilience and the dispersion). Both single factor and orthogonal design experiments were adopted to obtain optimal conditions. The superabsorbent polymer prepared under the optimal conditions showed improved water absorbency in physiological saline [17 g · g −1 under load ( P = 2 × 10 3 Pa) and 65 g · g −1 at atmospheric pressure] and other swelling properties, such as hydrogel strength, resilience and dispersion, also improved.