Adsorption of Cu2+ ions with poly (N-isopropylacrylamide-co- methacrylic acid) micro/nanoparticles

Document Type

Article

Publication Date

9-15-2008

Abstract

Chelation efficiency of stimuli-responsive poly(N-iospropylacrylamide-co- methyacrylic acid) (PNI-PAAm-MAA) nanoparticles with Cu2+ ions from CuSO4. 5H2O solution and from wood treated with copper-based preservatives was studied. It was shown that particle size played a very important role in the adsorption process. The nano-scale particles showed much improved Cu ion adsorption efficiency, compared with the micro hydrogels. The amount of Cu ion adsorption increased with increase of MAA ratio in copolymers and adsorption efficiency decreased with increased particle size. Furthermore, the adsorption amount varied with adsorption temperature at temperatures both below and above the corresponding low critical solution temperature (LCST). The high adsorption efficiency of Cu ions by PNIPAAm-MAA polymer particles provides an effective technique for recovering metal ions (e.g., Cu2+) from wood treated with metal-based preservatives. © 2008 Wiley Periodicals, Inc.

Publication Source (Journal or Book title)

Journal of Applied Polymer Science

First Page

3470

Last Page

3476

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