title: Synthesis and swelling behaviors of carboxymethyl cellulose-based superabsorbent resin hybridized with graphene oxide.
abstract: Well-dispersed graphene oxide sheets were successfully incorporated into a superabsorbent resin through in situ graft polymerization of acrylic acid on carboxymethyl cellulose backbone in the presence of graphene oxide as filler. The structure and properties of the resultant superabsorbent resin were studied in detail by means of a variety of characterization methods. The influence of the feed ratio of starting materials (such as GO, initiator, cross-linker, the ratio of CMC to AA and the neutralized degree of AA) and pH values on water absorbency and retention ability was extensively determined and discussed. The obtained results showed that the introduction of graphene oxide had no obvious influence on the inherent structure of the superabsorbent resin but changed the surface morphology significantly. Importantly, the hybrid superabsorbent resin showed an enhanced thermal stability and remarkably improved swelling ratio as well as water-retention ability comparing with that of the pure superabsorbent resin.
authors.affiliation: School of Science, Henan Agricultural University, Zhengzhou 450002, P.R. China. Electronic address: gary1451@iccas.ac.cn.
authors.forename: Zhimin
authors.initials: Z
authors.lastname: Wang
authors.affiliation: School of Science, Henan Agricultural University, Zhengzhou 450002, P.R. China.
authors.forename: Aimin
authors.initials: A
authors.lastname: Ning
authors.affiliation: School of Science, Henan Agricultural University, Zhengzhou 450002, P.R. China.
authors.forename: Puhui
authors.initials: P
authors.lastname: Xie
authors.affiliation: School of Science, Henan Agricultural University, Zhengzhou 450002, P.R. China.
authors.forename: Guangqin
authors.initials: G
authors.lastname: Gao
authors.affiliation: School of Science, Henan Agricultural University, Zhengzhou 450002, P.R. China.
authors.forename: Lixia
authors.initials: L
authors.lastname: Xie
authors.affiliation: School of Science, Henan Agricultural University, Zhengzhou 450002, P.R. China.
authors.forename: Xin
authors.initials: X
authors.lastname: Li
authors.affiliation: College of Life Science, Henan Agricultural University, Zhengzhou 450002, P.R. China. Electronic address: song1666@126.com.
authors.forename: Andong
authors.initials: A
authors.lastname: Song
keywords: Carboxymethyl cellulose; Graphene oxide; Superabsorbent resin; Swelling behavior; Water retention