Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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The Characteristics of Poly(acrylamide)-SiOx Nanoparticles Prepared by Graft-polymerizaton

그라프트 중합에 의해 만들어진 폴리아크릴아마이드-실리카 나노 입자의 특성

  • Min, Jun Ho (Division of Chemical Engineering, Pukyong National University) ;
  • Min, Seong Kee (Division of Chemical Engineering, Pukyong National University)
  • 민준호 (부경대학교 응용화학공학부) ;
  • 민성기 (부경대학교 응용화학공학부)
  • Received : 2009.09.02
  • Accepted : 2009.11.18
  • Published : 2010.02.10
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Abstract

Methacryloxypropyltrimethoxysilane (MPTMS) was used for the surface modification of silica nanoparticles in the toluene dispersion system for 8 h (MPSN). Then, methacryloxypropyl-modified silica nanoparticles were successfully prepared by solutioun polymerization in the ethanol solution at $60^{\circ}C$ for 14 h with adding AIBN initiator. The modification of ultra-fine particles (SiOx-PAA nanospheres) was investigated via EA, XPS, FTIR, TGA, SEM and TEM. The mean diameter of the bare silica nanoparticles, MPSN and SiOx-PAA monodisperse nanoparticles was about 25, 30 and 35 nm, respectively.

${\gamma}-Methacryloxypropyl$이 가진 기능성 그룹으로 silica nanoparticle의 유기변형은 silica의 표면개질로 성공적으로 준비했다. 또한 ethanol 용매에서 AAm을 사용하는 radical 침전중합을 통해서 polyacrylamide를 MPSN nanosphere에 'raft from'방법으로 microsphere가 성공적으로 graft중합되었다. FTIR과 XPS는 ultra-fine silica particle의 표면에서 실리카개질이 공유결합하는 것을 보여주며 SEM분석은 ultra-fine particle과 유기변형된 입자는 각각 25, 30, 35 nm의 크기로 응집작용을 효과적으로 막아주고 나누어줌을 증명할 수 있다는 것을 보여준다.

Keywords

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