Peleg and Weibull models for water absorption of copolymer gels crosslinked on polyethylene glycol dimethacrylates

Peleg and Weibull models for water absorption of copolymer gels crosslinked on polyethylene... In this study, the super-absorbent copolymer gels were obtained from the aqueous solution of monomers dispersed in a continuous organic phase. The inverse suspension polymerization was accomplished with the use of aqueous solutions of partly neutralized acrylic acid with a predetermined crosslinker agent, polyethylene glycol dimethacrylates (PEGDMA)/monomer ratio in cyclohexan. The copolymer gels synthesized using PEGDMA crosslinker with three different molecular weights (PEGDMA330, PEGDMA550, and PEGDMA750) were characterized by ınfrared spectroscopy and scanning electron microscopy. Water absorption capacities of the copolymer gels were determined. The water absorption capacity of 1 g copolymer gels in water was respectively obtained as 232, 255, and 316 g water/g polymer gel for PEGDMA330, PEGDMA550, and PEGDMA750, respectively. The Peleg and Weibull models were used to describe the water absorption behavior of the copolymer gels. The highest values of R 2 and the lowest values of χ 2 and RMSE for copolymer gels were observed with the Weibull model. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Peleg and Weibull models for water absorption of copolymer gels crosslinked on polyethylene glycol dimethacrylates

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Publisher
Springer Netherlands
Copyright
Copyright © 2013 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-013-1041-3
Publisher site
See Article on Publisher Site

Abstract

In this study, the super-absorbent copolymer gels were obtained from the aqueous solution of monomers dispersed in a continuous organic phase. The inverse suspension polymerization was accomplished with the use of aqueous solutions of partly neutralized acrylic acid with a predetermined crosslinker agent, polyethylene glycol dimethacrylates (PEGDMA)/monomer ratio in cyclohexan. The copolymer gels synthesized using PEGDMA crosslinker with three different molecular weights (PEGDMA330, PEGDMA550, and PEGDMA750) were characterized by ınfrared spectroscopy and scanning electron microscopy. Water absorption capacities of the copolymer gels were determined. The water absorption capacity of 1 g copolymer gels in water was respectively obtained as 232, 255, and 316 g water/g polymer gel for PEGDMA330, PEGDMA550, and PEGDMA750, respectively. The Peleg and Weibull models were used to describe the water absorption behavior of the copolymer gels. The highest values of R 2 and the lowest values of χ 2 and RMSE for copolymer gels were observed with the Weibull model.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Jan 24, 2013

References

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