Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Study on the Characteristics of the Absorbency Silicone by Super Absorbent Polymers

고흡수성 수지를 이용한 흡수성 실리콘의 특성 연구

  • Cha, Gook-Chan (Korea Orthophedics & Rehabilitation Engineering Center (KOREC)) ;
  • Song, Jeom-Sik (Korea Orthophedics & Rehabilitation Engineering Center (KOREC)) ;
  • Lee, Suk-Min (Korea Orthophedics & Rehabilitation Engineering Center (KOREC))
  • Received : 2012.02.29
  • Accepted : 2012.05.03
  • Published : 2012.06.30
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Abstract

Silicone resin has no water-absorbing function because it is a strong hydrophobic polymer. However, addition of super absorbent polymer gives much better absorbency than that of conventional silicone resin. In this study, we developed novel silicone materials with water-absorbing function by choosing three types of amorphous acrylic super absorbent polymers with different particle sizes, determining the mixing ratio of the three polymers and applying the mixtures into two-component type silicone material for medical purpose. The change in the mechanical properties such as tensile strength, tear strength, compressive strength and hardness was investigated by varying the particle size and content ratio of the added super absorbent polymers while preparing the silicone resins. The absorbency of the silicone resins was measured over time. Additionally, the particle shape of the super absorbent polymers as well as the distribution within the silicone resin was observed using an optical microscope.

실리콘 수지는 소수성이 강한 고분자이기 때문에 수분을 흡수하는 기능이 전혀 없다. 하지만 고흡수성 수지(Super Absorbent Polymer)를 첨가제로 사용하면 기존의 실리콘보다 월등한 흡수성을 갖게 된다. 본 연구에서는 무정형 형태의 입자 크기가 다른 아크릴계 고흡수성 수지 3가지를 선택하여 배합비를 설정하고 2액형 타입의 의료용 실리콘 소재에 적용해서 수분을 흡수하는 기능을 갖는 새로운 실리콘 소재를 개발하였다. 고흡수성 수지의 첨가에 의한 실리콘 수지의 제조시 입자 사이즈와 함량을 달리하면서 인장, 인열, 압축, 경도에 대한 기계적 물성 변화를 알아보았으며, 시간에 따른 실리콘 수지의 흡수성을 측정하였다. 또한 전자 현미경을 통해 고흡수성 수지의 입자형태와 실리콘 수지와의 분포도를 관찰하였다.

Keywords

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