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首页> 外文期刊>Journal of Applied Polymer Science >Adsorption of Cu2+ ions with poly (N-isopropylacrylamide-co-methacrylic acid) microanoparticles
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Adsorption of Cu2+ ions with poly (N-isopropylacrylamide-co-methacrylic acid) microanoparticles

机译：聚（N-异丙基丙烯酰胺-共-甲基丙烯酸）微粒/纳米粒子对Cu2 +离子的吸附

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摘要

Chelation efficiency of stimuli-responsive poly(N-iospropylacrylamide-co-methyacrylic acid) (PNIPAAm-MAA) nanoparticles with Cu2+ ions from CuSO4. 5H(2)O 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. (c) 2008 Wiley Periodicals, Inc.
机译：刺激响应性聚（N-ios丙基丙烯酰胺-共甲基丙烯酸）（PNIPAAm-MAA）纳米粒子与来自CuSO4的Cu2 +离子的螯合效率。研究了5H（2）O溶液以及由铜基防腐剂处理过的木材。结果表明，粒径在吸附过程中起着非常重要的作用。与微水凝胶相比，纳米级颗粒显示出大大改善的Cu离子吸附效率。 Cu离子的吸附量随共聚物中MAA比的增加而增加，吸附效率随粒径的增加而降低。此外，在低于和高于相应的低临界溶液温度（LCST）的温度下，吸附量随吸附温度而变化。 PNIPAAm-MAA聚合物颗粒对Cu离子的高吸附效率为从用金属基防腐剂处理的木材中回收金属离子（例如Cu2 +）提供了有效的技术。 （c）2008年Wiley Periodicals，Inc.

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