Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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Preparation of Acrylic Acid Grafted Polypropylene by Electron Beam Irradiation and Heavy Metal Ion Adsorption Property

전자선 조사를 이용한 아크릴산이 그라프트된 폴리프로필렌의 제조 및 중금속 이온 흡착 특성

  • Cheon, Ja young (Industry and Environment Research Division, Korea Atomic Energy Research Institute) ;
  • Jeun, Joon-pyo (Industry and Environment Research Division, Korea Atomic Energy Research Institute)
  • Received : 2019.08.01
  • Accepted : 2019.11.27
  • Published : 2019.12.31
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Abstract

In this study, an acrylic acid (AAc) was grafted on a polypropylene (PP) nonwoven fabric using electron beam irradiation. Electron beam grafting was carried out under various conditions to produce AAc grafted PP (PP-g-AAc) nonwoven fabric having a grafting yield of about 50% at radiation dose of 100 kGy and a monomer concentration of 60%. The physical and chemical properties of PP-g-AAc nonwoven fabric were evaluated by SEM, ATR-FTIR, thermal analysis and tensile strength. The morphology of PP and PP-g-AAc nonwoven fabric confirmed by SEM showed no significant change, and it was judged that AAc was introduced into PP nonwoven fabric from ATR-FTIR. PP-g-AAc nonwoven fabric showed an increase in tensile strength and a decrease in tensile strain compared to PP nonwoven fabric. However, since change of value is not significant, it is considered that there is no significant influence on the physical characterization. Adsorption experiments of PP-g-AAc nonwoven fabric on various ions showed selective adsorption behavior for lead ion. In conclusion, the electron beam radiation-induced PP-g-AAc nonwoven fabric is expected to be applied as an effective adsorbent for the adsorption of lead ions.

본 연구는 전자선 조사를 이용하여 폴리프로필렌(polypropylene, PP) 부직포에 아크릴산(acrylic acid, AAc)을 그라프트 한 후 납 이온에 대한 흡착성능을 평가하였다. 다양한 조건에서 그라프트를 실시하여 조사량 100 kGy, 단량체 농도 60%에서 약 50%의 그라프트율을 갖는 아크릴산이 그라프트 된 폴리프로필렌(PP-g-AAc) 부직포를 제조하였다. 제조된 PP-g-AAc 부직포의 물리/화학적 특성을 SEM, ATRIR, 열분석, 인장강도 등의 분석을 통해 평가하였다. SEM으로 확인한 PP와 PP-g-AAc 부직포의 형태에는 큰 변화가 없었으며, ATR-FTIR 결과로부터 PP 부직포에 AAc가 도입되었다고 판단하였다. PP-g-AAc 부직포는 PP 부직포와 비교하여 인장강도는 증가하고 인장변형률은 감소하였다. 하지만 그 변화의 값이 크지 않아 물리적 특성에 큰 영향력은 없을 것이라 판단된다. 다양한 이온들에 대한 PP-g-AAc 부직포의 흡착특성을 평가한 결과 납에 대해 선택적 흡착 거동을 보였다. 결론적으로, 본 연구에서 제조된 PP-g-AAc는 납 이온 흡착을 위한 흡착제로서 응용이 기대된다.

Keywords

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