Synthesis and Characterization of Silica/Polystyrene Composite Nanoparticles by in situ Miniemulsion Polymerization

In situ 미니에멀젼중합에 의한 실리카/폴리스타이렌 복합체 나노입자의 합성과 특성

  • Patole, Archana S. (Department of Polymer Science & Engineering, Sungkyunkwan University) ;
  • Patole, S.P. (SAINT, Sungkyunkwan University) ;
  • Song, Mi-Hyang (Department of Polymer Science & Engineering, Sungkyunkwan University) ;
  • Yoon, Joo-Young (M&B GreenUs Co. Ltd.) ;
  • Kim, Jin-Hwan (Department of Polymer Science & Engineering, Sungkyunkwan University) ;
  • Kim, Tae-Ho (Department of Polymer Science & Engineering, Sungkyunkwan University)
  • ;
  • ;
  • 송미향 (성균관대학교 공과대학 고분자시스템공학과) ;
  • 윤주영 ((주)엠엔비그린어스) ;
  • 김진환 (성균관대학교 공과대학 고분자시스템공학과) ;
  • 김태호 (성균관대학교 공과대학 고분자시스템공학과)
  • Published : 2009.03.30

Abstract

New coupling agent or surface modified agent (9-decenoic acid) was used to enhance the compatibility between silica and polystyrene in silica/polystyrene hybrid nanocomposite, synthesized by in situ miniemulsion polymerization. Composites contain well dispersed nanosize silica particles. Related tests and analyses confirmed the success of synthesis. Functionalization of silica by 9-decenoic acid and silica on the polystyrene was confirmed by FTIR. TGA showed presence and amount of silica in final latex. The glass transition temperature of the hybrid nanocomposite was increased with the silica amount. SEM and TEM analysis showed the spherical morphology of PS and composite with an average diameter of 55 nm. The presence of silica within composite was confirmed by EDS attached to the existing TEM.

In situ 미니에멀젼 중합으로 실리카/폴리스타이렌 하이브리드 나노복합체를 만들기 위하여 9-데세노 산을 실리카 표면 개질제로 처음 도입하였다. 복합체는 나노크기의 잘 분산된 실리카를 함유하고 있었다. 실리카의 표면 개질 및 폴리스타이렌의 합성 등은 FTIR로 확인하였고 생성 라텍스 중에 존재하는 실리카의 양은 TGA 분석으로 확인하였다. 생성된 하이브리드는 실리카의 양 증가에 따라 유리전이온도가 상승하였다. SEM과 TEM으로 확인한 결과 하이브리드 복합체는 평균 직경이 55 nm 정도로 나타났다. 복합체내의 실리카의 존재는 EDS와 연결된 TEM 등으로 확인되었다.

Keywords

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