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Study on superabsorbent composite. V. Synthesis, swelling behaviors and application of poly(acrylic acid‐co‐acrylamide)/sodium humate/attapulgite superabsorbent composite
Author(s) -
Zhang Jun Ping,
Li An,
Wang Ai Qin
Publication year - 2005
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.657
Subject(s) - ammonium persulfate , acrylic acid , acrylamide , composite number , superabsorbent polymer , swelling , materials science , sodium polyacrylate , aqueous solution , swelling capacity , polymerization , sodium , polymer chemistry , nuclear chemistry , chemical engineering , chemistry , organic chemistry , copolymer , composite material , polymer , raw material , engineering , metallurgy
A novel multifunctional superabsorbent composite from acrylic acid (AA), acrylamide (AM), sodium humate (SH) and attapulgite (APT), PAA‐AM/SH/APT, was synthesized by aqueous solution polymerization, using N,N ′‐methylenebisacrylamide (MBA) as a crosslinker and ammonium persulfate (APS) as an initiator. In this paper, not only the effects of the ratio of AA to AM, SH and APT content on the saturated water absorbency, but also various swelling behaviors of the composite were systematically investigated. The results show that comprehensive performances of the superabsorbent are improved by introducing functional components into a poly(acrylic acid‐acrylamide) (PAA‐AM) network. Functionality of the composite in practice was also investigated by studying the release of SH and by growing Elymus dahuricus Turcz (a kind of grass) plants in soil with and without using the superabsorbent composite. The roots and stems of Elymus dahuricus Turcz were found to be sturdier compared with the plants grown without the superabsorbent composite. Copyright © 2005 John Wiley & Sons, Ltd.