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Reusable Self-Healing Hydrogels Realized via in Situ Polymerization
Balachandran Vivek,
Published in American Chemical Society
2015
PMID: 25774447
Volume: 119
   
Issue: 14
Pages: 4881 - 4887
Abstract
In this work, a self-healing hydrogel has been prepared using in situ polymerization of acrylic acid and acrylamide in the presence of glycogen. The hydrogel was characterized using NMR, SEM, FT-IR, rheology, and dynamic light scattering (DLS) studies. The developed hydrogel exhibits self-healing properties at neutral pH, high swelling ability, high elasticity, and excellent mechanical strength. The hydrogel exhibits modulus values (G′, Ga″) as high as 106 Pa and shows an exceptionally high degree of swelling ratio (∼3.5 × 103). Further, the polymer based hydrogel adsorbs toxic metal ions (Cd2+, Pb2+, and Hg2+) and organic dyes (methylene blue and methyl orange) from contaminated water with remarkable efficiency (90-98%). The mechanistic analysis indicated the presence of pseudo-second-order reaction kinetics. The reusability of the hydrogel has been demonstrated by repeating the adsorption-desorption process over five cycles with identical results in the adsorption efficiency. (Graph Presented). © 2015 American Chemical Society.
About the journal
JournalData powered by TypesetJournal of Physical Chemistry B
PublisherData powered by TypesetAmerican Chemical Society
ISSN15206106
Open AccessNo
Concepts (39)
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    Acrylic monomers
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    Adsorption
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    Aromatic compounds
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    Azo dyes
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    Cadmium
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    Cadmium compounds
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    Dyes
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    Dynamic light scattering
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    Lead
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    Light scattering
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    Mercury (metal)
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    Metal ions
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    Polymerization
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    Polymers
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    Reaction kinetics
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    Reusability
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    Water pollution
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    Adsorption efficiency
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    ADSORPTION-DESORPTION PROCESS
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    Contaminated water
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    DEGREE OF SWELLING
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    IN-SITU POLYMERIZATION
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    MECHANISTIC ANALYSIS
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    PSEUDO-SECOND ORDER REACTIONS
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    SELF-HEALING PROPERTIES
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    Hydrogels
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    Coloring agent
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    Heavy metal
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    Hydrogel
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    Water pollutant
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    Chemistry
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    Isolation and purification
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    Mechanics
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    Water management
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    Coloring agents
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    Mechanical processes
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    Metals, heavy
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    Water pollutants, chemical
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    Water purification