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Study on superabsorbent composite XXV. Synthesis, characterization, and swelling behaviors of poly(acrylic acid‐ co ‐ N ‐acryloylmorpholine)/attapulgite superabsorbent composites
Author(s) -
Zhang Junping,
Liu Yin,
Wang Aiqin
Publication year - 2010
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.20845
Subject(s) - ammonium persulfate , acrylic acid , materials science , copolymer , swelling , composite number , swelling capacity , monomer , superabsorbent polymer , aqueous solution , composite material , fourier transform infrared spectroscopy , solvent , polymer chemistry , chemical engineering , chemistry , organic chemistry , polymer , engineering
In this work, a novel poly(acrylic acid‐ co ‐ N ‐acryloylmorpholine)/attapulgite superabsorbent composite was prepared by graft copolymerization among acrylic acid, N ‐acryloylmorpholine and attapulgite in aqueous solution, using N,N′ ‐methylenebisacrylamide as a crosslinker and ammonium persulfate as an initiator. The result from FTIR spectra showed that OH of attapulgite participated in graft copolymerization with acrylic acid and N ‐acryloylmorpholine. Proper monomer ratio and atapulgite content could form a loose surface, and improve reswelling ability and initial swelling rate. The buffer action of the COOH and COO − groups in the superabsorbent composite keeps the water absorbency a rough constant in the pH range of 4.4–9.6. Both polarity and structure of an organic solvent are responsible for the phase transition point of the superabsorbent composite. POLYM. COMPOS., 2010. © 2009 Society of Plastics Engineers
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