화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.21, No.2, 137-145, February, 2013
DOI10.1007/s13233-012-0187-y  Export Citation
Influence of the feeding control on the final properties of ethylene/propylene copolymers obtained in laboratory semi-batch reactor
Rafael Van Grieken, Guillermo Calleja1, Inmaculada Suarez1, †, and Javier Arranz-Andres2
  • Department of Environmental and Chemical Technology, School of Experimental Sciences and Technology (ESCET), Universidad Rey Juan Carlos, c/ Tulipan s/n, 28933, Mostoles, Madrid, Spain
  • 1Department of Environmental and Energy Technology, School of Experimental Sciences and Technology (ESCET), Universidad Rey Juan Carlos, c/Tulipan s/n, 28933, Mostoles, Madrid, Spain
  • 2Instituto de Ciencia y Tecnologia de Polimeros (ICTP-CSIC), Juan de la Cierva 3, 28006, Madrid, Spain
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The slurry polymerization reactors on the industrial scale operate in continuous mode at low monomer conversion per pass to minimize mass and heat transfer limitations. Nevertheless, for the screening of catalytic systems, the laboratory tests are carried out using batch or semi-batch reactors. In this work, ethylene/propylene copolymers were synthesized in a semi-continuous reactor under similar conditions, where the only difference involves the modification of the feed ratio during the reaction. The key point of the control system is a micro-gas chromatograph (MGC), which analyzes the molar ratio ethylene (C 2) to propylene (C 3) in the gas phase during the reaction, and the composition in the liquid phase was calculated using the Soave-Redlich-Kwong equation of state. The effect of the ethylene/propylene copolymer microstructure has been studied using different techniques that allow us to conclude that the method of synthesis influences the comonomer distribution and the final copolymer properties.
Keywords:semi-batch reactor;polymerization control;characterization;microstructure
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