Clean Technology (청정기술)

The Korean Society of Clean Technology (한국청정기술학회)
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Micromolding Technique for Controllable Anisotropic Polymeric Particles with Convex Roof

볼록한 지붕을 갖는 이방성 고분자 입자의 곡률반경 제어를 위한 마이크로몰딩 기술

  • Jeong, Jae-Min (Department of Green Energy Technology, Graduate School of Green Energy Technology, Chungnam National University) ;
  • Son, Jung-Woo (Cheonan Bugil High School) ;
  • Choi, Chang-Hyung (Department of Chemical Engineering, Chungnam National University) ;
  • Lee, Chang-Soo (Department of Chemical Engineering, Chungnam National University)
  • 정재민 (충남대학교 녹색에너지대학원 녹색에너지기술학과) ;
  • 손정우 (천안북일고등학교) ;
  • 최창형 (충남대학교 화학공학과) ;
  • 이창수 (충남대학교 화학공학과)
  • Received : 2012.08.29
  • Accepted : 2012.09.13
  • Published : 2012.09.30
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Abstract

Synthesis of well-defined particle with tunable size, shape, and functionalities is strongly emphasized for various applications such as chemistry, biology, material science, chemical engineering, medicine, and biotechnology. This study presents micromolding method for the fabrication of anisotropic particles with elegant control of curvature of covex roof. For the demostration of rapid fabrication of the particles, we have applied polydimethylsiloxane (PDMS) micromold as structure guiding template and wetting fluid to control curvature of roof of the particles. Based on this approach, we can control the radius of curvature from $20{\mu}m$ to $70{\mu}m$ with different aspect ratio of mold. In addition, wetting fluids with different wetting properties can also modulate the height and radius of curvature of the particles. We envision that this methodology is promising tool for precise control of particle shape in 3-dimensional space and new synthetic route for anisotropic particles with cost effective, simple, easy, and fast procedure.

입자의 크기, 모양, 및 기능기를 제어할 수 있는 제조 기술은 화학, 생물, 재료과학, 화학 공학, 의약 그리고 생명공학과 같은 다양한 적용분야에 적용될 수 있는 중요한 기술중의 하나이다. 본 연구는 볼록한 지붕을 지니는 이방성 고분자 입자의 곡률 제어를 위해 젖음성 유체를 도입한 새로운 미세몰딩(micromolding technique) 방법에 관한 것이다. 몰드의 종횡비 조절을 통하여 입자의 곡률 반경을 $20{\mu}m$에서 $70{\mu}m$까지 제어할 수 있었으며 서로 다른 습윤특성을 지닌 젖음성 용액을 이용하여 이방성 고분자 입자의 높이와 곡률반경을 조절할 수 있었다. 본 연구에서 제시한 미세몰딩 기술은 저렴하고, 간단하고, 쉽고 빠른 방법으로 이방성 입자를 제작할 수 있으며 3차원 입자 모양의 정밀제어가 가능한 새로운 방법으로 판단된다.

Keywords

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