Article
  • Hydrophilic Modification of Polycarbonate Surface by Electron Beam Irradiation
  • Lee HJ, Park K, Kim BN
  • 전자빔 조사에 의한 폴리카보네이트 표면의 친수성 개질
  • 이현중, 박근, 김병남
Abstract
Recently, many researches have been performed to modify polymer surfaces for hydrophobic or hydrophilic properties. The present study proposed a hydrophilic surface modification of polycarbonate surfaces by irradiating electron beam (E-beam). E-beam irradiations were performed under various irradiation conditions (beam energy, irradiation time, and induced current), and the relevant contact angle changes were investigated. The surface energy change due to E-beam irradiation was investigated by XPS analysis, from which it was found that hydrophilic group was introduced due to E-beam irradiation so as to reduce the contact angle. Nano-indentation tests were also performed to investigate the change in mechanical properties, which showed that surface hardness as well as rigidity were improved due to the E-beam irradiation effect.

최근 기능성 표면의 구현을 위해 고분자 표면의 접촉에너지를 변화시켜 소수성 혹은 친수성으로 변화시키기 위한 연구가 진행되고 있다. 본 연구에서는 폴리카보네이트 고분자 필름에 전자빔을 조사하여 친수성으로 개질하기 위한 연구를 진행하였다. 이를 위해 다양한 조사조건(전자빔 에너지, 조사시간, 인가전류) 변화에 따른 전자빔 조사실험을 수행하고, 조사된 시편의 접촉각 변화를 관찰하였다. 전자빔 조사에 따른 표면에너지 변화의 원인을 고찰하기 위해 X선 광전자분석기(XPS)를 이용하여 미세구조를 분석하였으며, 전자빔 조사에 의한 친수기 증가로 인해 접촉각이 감소함을 확인하였다. 또한 표면개질에 의한 기계적 성질 변화를 확인하기 위해 나노 압입시험을 실시하였으며, 전자빔 조사 결과 표면의 경도와 탄성계수가 증가하여 기능적 성질을 부여할 수 있음을 확인하였다.

Keywords: polycarbonate; electron beam; hydrophilic surface; contact angle

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2015; 39(4): 559-565

    Published online Jul 25, 2015

  • 10.7317/pk.2015.39.4.559
  • Received on Nov 7, 2014
  • Accepted on Dec 24, 2014