화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.33, No.1, 52-57, January, 2009
Export Citation
UV조사에 의한 Poly(lactic acid)-g-Acrylic Acid 이온교환체의 합성 및 흡착특성
Synthesis of Poly(lactic acid)-g-Acrylic Acid Ion Exchanger by UV Radiation Method and Metal Adsorption Properties
최은미, 손복기, 이창수, 황택성†
  • 충남대학교 공과대학 바이오응용화학부
Eunmi Choi, Bokgi Son, Chang-Soo Lee, and Taek Sung Hwang†
  • Department of Chemical Engineering, College of Engineering, Chungnam National University, Daejeon 305-764, Korea
E-mail:
초록
본 연구는 UV 조사법으로 poly(lactic acid)-g-acrylic acid(PLA-g-AAc) 이온교환체를 합성하고 이 들의 금속흡착 특성을 ICP-AES 분석을 통해 확인하였다. PLA-g-AAc의 UV 조사량과 AAc의 농도변화에 따른 함수율, 그래프트율 및 이온교환용량을 측정하였다. 그래프트율은 AAc 및 benzophenone(BP) 농도가 각각 1.0, 0.1 mol/L일때 최대 28%이었으며, 이온교환용량과 함수율은 각각 1.13 meq/g와 38%로 UV 조사량 및 AAc의 농도가 증가함에 따라 증가하였다. 한편, PLA-g-AAc의 흡착시간에 따른 Cu^(2+), Co^(2+), Ni^(2+)에 대한 선택 흡착성은 모두 높게 나타났으며 Cu^(2+)가 가장 우수한 선택흡착성을 나타내었다.
This study investigates the metal adsorption properties of poly(lactic acid)-g-acrylic acid (PLA-g-AAc) synthesized by UV irradiation method. The properties including degree of grafting, water content, and ion exchange capacity(IC) strongly depend on the critical experimental factors such as UV intensity and AAc concentration. Under the optimized condition, the maximum degree of grafting, the IC value, and water content are 28%, 1.13 meq/g, and 38%, respectively. The synthesizedion exchanger shows strong capacity of adsorption for divalent metal ions such as Cu^(2+), Ni^(2+), and Co^(2+), and greater selectivity of adsorption for Cu^(2+).
Keywords:poly(lactic acid);UV radiation;ion exchange;acrylic acid;adsorption.
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