Synthesis and Characterization of Poly(Ethyleneimine)-Modified Poly(Acrylic Acid)-Grafted Nanocellulose/Nanobentonite Superabsorbent Hydrogel for the Selective Recovery of β-Casein From Aqueous Solutions

A novel adsorbent, poly(ethyleneimine)-modified poly(acrylic acid)-grafted nanocellulose/nanobentonite superabsorbent hydrogel (PEI-PAA-g-NC/NB) was prepared by free radical graft copolymerization technique and well characterized. Swelling behavior of adsorbent was studied under different pH and tem...

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Bibliographic Details
Published inInternational journal of polymeric materials Vol. 64; no. 15; pp. 772 - 784
Main Authors Anirudhan, T. S., Gopal, S. Saranya, Rejeena, S. R.
Format Journal Article
LanguageEnglish
Published Taylor & Francis 22.11.2015
Subjects
adsorption
desorption
nanobentonite
nanocellulose
β-casein
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Summary:A novel adsorbent, poly(ethyleneimine)-modified poly(acrylic acid)-grafted nanocellulose/nanobentonite superabsorbent hydrogel (PEI-PAA-g-NC/NB) was prepared by free radical graft copolymerization technique and well characterized. Swelling behavior of adsorbent was studied under different pH and temperatures. The various adsorption parameters for the adsorption of the protein, β-Casein (βCN) onto the PEI-PAA-g-NC/NB were investigated. Sips adsorption isotherm and pseudo-first-order kinetic model were best suited for the present adsorbent. The adsorption-desorption experiments were conducted with 0.1 M NaSCN for four cycles. The results of the present investigation proved that PEI-PAA-g-NC/NB is highly effective for the separation of βCN from aqueous solutions.
ISSN:0091-4037
1563-535X
DOI:10.1080/00914037.2015.1030647