Open AccessPreparation and properties of ternary copolymer hydrogel materials
Author(s) -
Kang Cheng,
Haoran Zhang,
Yuan Yuan,
Zhou Guo-ping,
Bing Yao,
Shifan Wang
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/782/2/022097
Subject(s) - self healing hydrogels , adsorption , potassium persulfate , copolymer , chemical engineering , metal ions in aqueous solution , materials science , acrylamide , ternary operation , polymer chemistry , nuclear chemistry , metal , chemistry , polymerization , composite material , polymer , organic chemistry , computer science , engineering , programming language , metallurgy
In order to improve the adsorption of heavy metal ions on acrylic hydrogels, P(AA-co-AM-co-S) hydrogels were synthesized from acrylic, acrylamide and styrene as raw materials. During the synthesis, potassium persulfate was used as the initiator, N, N’-methylenebisacrylamide was used as the crosslinking agent, and the degree of neutralization was 80%. The structure of the prepared hydrogel was determined by infrared spectroscopy. The adsorption properties of hydrogels on Ni 2+ at different times and pH were determined. The results show that the adsorption capacity of Ni 2+ ions on the hydrogel reaches the equilibrium adsorption capacity in about 2 hours and reaches 159 mg/g. The second-order kinetic model fits well. The optimal pH for the adsorption of Ni 2+ ions by the hydrogel is 3.5 ~ 4.5 and the adsorption capacity is 160 mg/g. This study has important theoretical and practical significance for the development of high-efficiency, environmentally friendly, low-cost heavy metal ion hydrogels.