Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Preparation of Silver Nanoparticles with Various Morphology Using Amphiphilic Graft Copolymer Membranes

양쪽성 가지형 공중합막을 이용한 다양한 모양의 은 나노입자 제조

  • Seo, Jin-Ah (Department of Chemical and Biomolecular Engineering, Yonsei University) ;
  • Choi, Jin-Kyu (Department of Chemical and Biomolecular Engineering, Yonsei University) ;
  • Ahn, Sung-Hoon (Department of Chemical and Biomolecular Engineering, Yonsei University) ;
  • Yeon, Seung-Hyeon (Department of Chemical and Biomolecular Engineering, Yonsei University) ;
  • Kim, Jong-Hak (Department of Chemical and Biomolecular Engineering, Yonsei University)
  • 서진아 (연세대학교 화공생명공학과) ;
  • 최진규 (연세대학교 화공생명공학과) ;
  • 안성훈 (연세대학교 화공생명공학과) ;
  • 연승현 (연세대학교 화공생명공학과) ;
  • 김종학 (연세대학교 화공생명공학과)
  • Received : 2010.06.01
  • Accepted : 2010.06.14
  • Published : 2010.06.30
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Abstract

Silver ions of poly(vinyl chloride)-g-poly(styrene sulfonic acid) (PVC-g-PSSA) graft copolymer were reduced to form silver nanoparticles under thermal condition ($80^{\circ}C$). We were successful in synthesizing silver nanoparticles with various morphologies by changing reaction time. At short reaction times (~1 h), silver nanoparticles with 5 nm in size were formed without disrupting a microphase-separated structure of graft copolymer. At medium reaction times (~5 h), silver nanoparticles were aggregated to form large clusters ranging 30~50 nm in size. At much longer reaction times (~18 h), hurricane-like silver clusters were observed due to strong particle aggregation.

Poly(vinyl chloride)-g-poly(styrene sulfonic acid) (PVC-g-PSSA) 가지형 공중합체를 합성한 후, 이를 이용하여 $80^{\circ}C$에서 열적으로 환원하여 은 나노입자를 제조하였다. 반응 시간을 바꿈에 따라 다양한 구조의 은 나노입자를 제조하는데 성공하였다. 1시간 정도의 짧은 반응 시간에서는 가지형 공중합체의 미세 상분리 구조를 크게 변화시키지 않고 5 nm 크기의 작은 은 나노입자가 생성되었다. 5시간 정도의 중간 반응 시간에서는 30 내지 50 nm 정도의 크기를 갖는 은 나노입자가 생성되었다. 18시간 정도의 긴 반응 시간에서는, 은입자가 뭉친 허리케인 모양의 은 집합체가 관찰되었다.

Keywords

References

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