Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Preparation of Porous Polymer Monoliths in Supercritical Carbon Dioxide

초임계 이산화탄소를 이용한 다공성 고분자 Monolith 제조

  • Kang, Se Ran (Division of Applied Chemical Engineering, Pukyong National University) ;
  • Ju, Chang Sik (Division of Applied Chemical Engineering, Pukyong National University)
  • 강세란 (부경대학교 응용화학공학부) ;
  • 주창식 (부경대학교 응용화학공학부)
  • Received : 2004.09.15
  • Accepted : 2004.11.17
  • Published : 2005.02.28
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Abstract

Experimental researches on the preparation of porous polymeric monoliths in supercritical carbon dioxide have been performed and the effects of monomer and polymerization parameters on the physical properties of the monolith prepared were examined. Polymerizations were carried out in the high pressure stainless steel reactor with sapphire window to show the phase change during the polymerization reaction, and continuous and dry porous monolithic polymer could be obtained. The specific surface area of monolithic polymer increased with monomer contents in reaction mixture and reaction pressure. The Rockwell hardness could be enhanced by the addition of co-monomer MMA in reaction mixtures.

초임계 이산화탄소를 이용하여 다공성 고분자 모노리스를 제조하는 실험적 연구를 행하여, 단량체의 종류와 중합반응 조건들이 생성되는 고분자 모노리스의 물성에 미치는 영향을 실험적으로 조사하였다. 중합반응은 반응이 진행되는 동안 반응물의 상변화를 관찰할 수 있도록 사파이어 창을 부착한 고압 반응기 내에서 진행되었으며, 단량체의 농도가 매우 낮은 경우를 제외하고는 반응기 내부형태와 동일한 형상의 건조하고 다공성인 고분자 모노리스를 얻었을 수 있었다. 생성되는 고분자 모노리스의 비 표면적은 반응혼합물 중의 단량체 농도와 중합반응 압력에 따라 증가하였으며, 기계적 강도는 경도 보강제 MMA를 첨가하여 증대시킬 수 있었다.

Keywords

Acknowledgement

Supported by : 부경대학교

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