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Molecules 2017, 22(11), 1824; doi:10.3390/molecules22111824

Acrylated Composite Hydrogel Preparation and Adsorption Kinetics of Methylene Blue

1,2,3,* , 1,2,3
,
1,2,3
,
1,3
,
1,3
and
1,2,3
1
State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China
2
School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China
3
Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi 214122, Jiangsu, China
*
Author to whom correspondence should be addressed.
Received: 19 September 2017 / Revised: 16 October 2017 / Accepted: 24 October 2017 / Published: 26 October 2017
View Full-Text   |   Download PDF [1815 KB, uploaded 26 October 2017]   |  

Abstract

By using cyclodextrin (α-CD) self-assembly into a hydrogel with the triblock copolymer Pluronic F127, nanomicrocrystalline cellulose was introduced into a gel system to form a composite CNC-β-CD/α-CD/Pluronic F127 hydrogel (CCH). CCH was modified further by grafting acrylic acid to form a novel acrylated composite hydrogel (ACH). The swelling degree of ACH was 156 g/g. Adsorption isotherms show that the adsorption process for methylene blue proximity fitted the Freundlich model. The adsorption kinetics showed that ACH followed a quasi-second-order kinetic model. Methylene blue desorption showed that ACH was a temperature- and pH-dependent gel. Repeated adsorption and desorption experiments were carried out three times, and the removal rate of methylene blue at 75 mg/L was still 70.1%. View Full-Text
Keywords: cyclodextrin hydrogel; microcrystalline cellulose; gel property; acrylic acid; adsorption cyclodextrin hydrogel; microcrystalline cellulose; gel property; acrylic acid; adsorption
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Wang, J.; Meng, X.; Yuan, Z.; Tian, Y.; Bai, Y.; Jin, Z. Acrylated Composite Hydrogel Preparation and Adsorption Kinetics of Methylene Blue. Molecules 2017, 22, 1824.

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