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제122회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Enhanced Mechanical and Flame Redarding Properties of ABS Nanocomposites with Organo-Clays

등록일
2018년 8월 31일 11시 23분 52초
접수번호
2170
발표코드
MAT.O-15 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 10시 : 38분
발표형식
구두발표
발표분야
Material Chemisty - Oral Presentation of Young Material Chemists
저자 및
공동저자
Ji Hee Lee, HyeonJu Ryu1, Goeun Choi1, Jin-ho Choy1,*
Chemistry Department of Nano-Science, Ewha Womans University, Korea
1Department of Chemistry and Nano Science, Ewha Womans University, Korea
Acrylonitrile–butadiene–styrene copolymer (ABS) nanocomposites with cationic and anionic clays were successfully synthesized via a solution blending method. Cationic clay (Fluoro-mica; ME) and anionic clay (layered double hydroxide; LDH) were modified with hydrophobic molecules such as cetyltrimethylammonium (CTA) and stearate (SA), respectively, for improving the compatibility with hydrophobic ABS. All the ABS nanocomposites in the present study were prepared by changing the synthetic parameters such as the content of organoclay, the volume of solvent, and the sonication condition. In ABS nanocomposites containing SA-LDH, the (00l) XRD peaks originating from SA-LDH were not observed, indicating that SA-LDH layers were fully exfoliated and homogeneously dispersed within ABS matrix. On the other hand, the (00l) ones for ABS nanocomposites containing CTA-ME without any sonication treatments were remained, but shifted to a low 2θ angle due to the fact that the hydrophobic ABS molecules were further intercalated into the interlayer space of CTA-ME giving rise to an increase of basal spacing. However, the (00l) peaks for ABS/CTA-ME nanocomposites were completely disappeared upon sonication, indicating that CTA-ME layers were exfoliated and homogenously dispersed in ABS matrix. According to the thermogravimetric analysis, the thermal stability of ABS nanocomposites was gradually improved by increasing the content of SA-LDH. The ABS nanocomposites containing well-dispersed organoclays showed ~25 % enhancement of mechanical properties, such as elastic modulus and tensile strength, upon increasing the content of CTA-ME, compared to intact ABS surely due to the high dispersity of organo-clay nanosheets in ABS matrix.

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