Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Preparation and Characterization of Rubber/Clay Nanocomposite Using Skim Natural Rubber Latex

스킴천연고무 라텍스를 이용한 고무/점토 나노복합체의 제조 및 특성

  • Alex, R. (Rubber Research Institute of India) ;
  • Kim, M.J. (BK-21 BIN Fusion Research Team, Chonbuk National University) ;
  • Lee, Y.S. (Department of Chemical Engineering, Chnobuk National University) ;
  • Nah, C. (BK-21 BIN Fusion Research Team, Chonbuk National University)
  • Published : 2006.12.30
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Abstract

A new route for making rubber/clay nanocomposites was suggested based on skim natural rubber latex (SNRL), which is a protein rich by-product obtained during the centrifugal concentration of natural rubber (NR) latex. NR/acrylonitrile butadiene rubber (NBR) based nanocomposites were prepared from SNRL and NBR latex of 26 % acrylonitrile content by blending of aqueous dispersion of organoclay (OC) followed by coagulation, drying, mill mixing and vulcanization. X-ray diffraction(XRD) studies revealed that NR/NBR blend nanocomposites exhibited a highly intercalated and exfoliated structure, especially for NBR-rich blends. Dynamic mechanical studies showed that more compatible behavior was observed for NBR-rich blends. The 25/75 NR/NBR blend nanocomposite showed the best mechanical properties.

천연고무(NR) 라텍스의 원심분리 농축과정의 부산물인 고농도 단백질 함유 스킴 천연고무라텍스(SNRL)를 이용한 고무/점토 나노복합체의 새로운 제조방법을 제시하였다. SNRL과 26% 아크릴로니트릴 함량의 NBR 라텍스의 혼합물에 수분산 유기화 점토(OC)를 첨가하여 혼합하고, 건조 후에 밀혼합과 가황공정을 거쳐 NR/아크릴로니트릴 부타디엔 고무(NBR) 나노복합체를 제조하였다. X-선 회절(XRD) 연구를 통하여 제조된 NR/NBR 블렌드 나노복합체는 층간 삽입이 높은 삽입형과 일부 박리형을 나타내는 것으로 밝혀졌고, 특히 NBR 상이 많은 블렌드에서 그 효과는 더 크게 나타났다. 동적기계적 거동 분석결과 NBR 상이 높은 블렌드가 상용성이 더 높은 것으로 나타났다. NR/NBR 25/75 블렌드가 가장 우수한 기계적 강도를 나타내었다.

Keywords

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