• Title/Summary/Keyword: carboxymethylated polyamine-polyurea resin

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Studies on the Polyethylenimine-Polymethylenepolyphenylene Isocyanate Backbone Chelating Resin Synthesis for the Trace Heavy Metals Enrichment and Analysis(II) : Rubeanic Acid Loaded Carboxymethylated Polyamine-Polyurea Resin (미량 중금속의 농축 및 정량을 위한 폴리에틸렌이민-폴리메틸렌폴리페닐렌 이소시안에이트에 토대한 킬레이트 수지의 합성에 관한 연구(II) : 루빈산이 결합된 카르복시메틸화된 폴리아민-폴리우레아 수지)

  • Chung, Yong Soon;Lee, Kang Woo;Hwang, Jongyoun;Lim, Kwang Soo
    • Analytical Science and Technology
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    • v.6 no.5
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    • pp.435-442
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    • 1993
  • Carboxymethylated polyamine-polyurea resin loaded with rubeanic acid (RCCPPI resin) was obtained by 1 step chemical reaction between chlorocarboxymethylated polyamine-polyurea(CCPPI) resin as matrix polymer and rebeanic acid. This resin was confirmed with infrared spectrometry, elemental analysis, and thermal analysis(DSC). The adsorption characteristics of the heavy metal's on the resin were studied by measuring distribution coefficient($K_d$) with changing pH of the solutions and frontal chromatography. The enrichment, recovery, and analysis of trace heavy metals, such as cadmium, cerium, copper, nikel, lead, and zinc, in the presence of high concentrations of sodium, calcium, and acetate salts was possible quantitatively by a column packed with the resin at each optimum pH. Preconcentration factors were more than 25. To elute the adsorbed heavy metals on the resin, 0.025M EDTA solution(pH 9.0) was used.

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Separation of Chromium(III) and Chromium(VI) by Carboxymethylated Polyamine-Polyurea Resin Column (카르복시메틸화된 폴리아민-폴리우레아 수지관에 의한 3가와 6가 크롬의 분리)

  • Chung, Yong Soon;Lee, Kang Woo;Hwang, Jong Youn;Lee, Yong Moon
    • Analytical Science and Technology
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    • v.7 no.2
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    • pp.205-211
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    • 1994
  • Acetic acid and succinic acid bonded polyamine-polyurea(CPPI and SAPPI) resins were synthesized from the reaction of polyethylenimine-polymethylenepolyphenylene isocyanate(PPI) resin as matrix polymer and chloroacetic acid and chlorosuccinic acid respectively. These resins were confirmed with infrared spectrometry and elemental analysis. The adsorption characteristics of the chromium(III) and dichromate(or chromate) ions on the resins were studied by measuring distribution coefficients($K_d$) with changing pH of the solution. It was thought that these ions were adsorbed by ion exchange mechanism. Chromium(III) and dichromate ion could be separated with stepwise elution method by changing pH of the eluent using SAPPI resin packed column($0.6cm(i.\;d.){\times}10cm(L.)$). Also, dichromate ion could be preconecntrated with CPPI resin column by a concentration factor of 50.

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