Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Synthesis of Polymeric Dental Restorative Composite Filled with Hydrophobic Silica Nanoparticle

소수성의 실리카 나노입자가 충진된 치아수복용 고분자 복합체 제조

  • Han, Sanghyuk (Department of Polymer Science & Engineering, Dankook University) ;
  • Seo, Kitaek (Department of Polymer Science & Engineering, Dankook University) ;
  • Ma, Seung Jae (Department of Polymer Science & Engineering, Dankook University) ;
  • Lim, Sang Myung (Department of Polymer Science & Engineering, Dankook University) ;
  • Kim, Ohyoung (Department of Polymer Science & Engineering, Dankook University)
  • 한상혁 (단국대학교 공과대학 고분자공학전공) ;
  • 서기택 (단국대학교 공과대학 고분자공학전공) ;
  • 마승재 (단국대학교 공과대학 고분자공학전공) ;
  • 임상명 (단국대학교 공과대학 고분자공학전공) ;
  • 김오영 (단국대학교 공과대학 고분자공학전공)
  • Received : 2006.05.30
  • Accepted : 2006.06.15
  • Published : 2006.08.10
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Abstract

To enhance the dental properties of polymeric dental restorative composite activated by visible-light, the surface of hydrophilic silica nanoparticle was hydrophobically treated using $\gamma$-methacryloxypropyltrimethoxysilane ($\gamma$-MPS) coupling agent. Structural properties and dispersity of silica in the composite was compared with the hydrophobicity of silica. Polymerization characteristic of the composite was also evaluated. Degree of hydrophobicity of silica nanoparticle was considerably improved with an increase of $\gamma$-MPS upto 40 wt% and converged asymptotically. Additionally, with an increase of the hydrophobicity of silica nanoparticle, the dispersity of silica was improved and the residual monomer in the composite was not detected from nuclear magnetic resonance experiment which indicated superior polymerization behavior.

가시광선 중합형의 고분자계 치아수복재의 고기능화를 위해 충전제로 사용된 친수성의 실리카 나노입자 표면을 $\gamma$-methacryloxypropyltrimethoxysilane ($\gamma$-MPS) 결합제로 소수성 처리하여 치아수복용 고분자 복합체를 제조하였다. 처리된 실리카의 구조적 물성과 복합체 내에서의 분산도 및 복합체의 중합 특성 등을 실리카의 소수화도와 비교하여 고찰하였다. 그 결과, 사용된 $\gamma$-MPS의 양이 40 wt%까지 증가함에 따라 실리카의 소수화도가 증가하였으며 그 이상에서는 큰 변화가 없었다. 또한 소수화도가 향상됨에 따라 복합체 내에서의 충전제 분산도가 양호하였으며 광중합 후 미반응 단량체는 핵자기공명 분석 결과 거의 남아 있지 않아 중합 특성이 우수함을 확인하였다.

Keywords

Acknowledgement

Supported by : 한국과학재단

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