• Title/Summary/Keyword: oligomer

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Topological Analysis on the Dispersion Polymerization of Styrene in Ethanol

  • 손정모;박형석
    • Bulletin of the Korean Chemical Society
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    • v.17 no.3
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    • pp.245-253
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    • 1996

  • A topological theory has been introduced to explain and evaluate the fractional volumes of system materials, the change of the weight and concentration of monomer molecules, molecular weight distribution, and interaction functions of polymer-polymer and polymer-oligomer, etc. for dispersion polymerization. The previous theory of Lu et al. has offered only an incomplete simulation model for dispersion polymer systems, whereas our present one gives a general theoretical model applicable to all the polymerization systems. The theory of Lu et al. considered only the physical property term caused by interaction between matters of low molecular weight (i.e., diluent, monomer, and oligomer) and polymer particles without dealing with physical properties caused by the structure of polymer networks in polymer particles, while our theory deals with all physical effect possible, caused by the displacement of not only entangled points but also junction points in polymer particles. The theoretically predictive values show good agreement with the experimental data for dispersion polymerization systems.

  • https://doi.org/10.5012/bkcs.1996.17.3.245 인용 PDF

Process Development and Analysis of Diorefinery for the Coproduction of 1,3-Butadiene and Butene Oligomer (1,3-부타디엔과 부텐 올리고머 공동 생산을 위한 바이오 정유 공정의 설계 및 분석)

  • AHN, BYEONGCHAN;PARK, JIN-NAM;WON, WANGYUN
    • Transactions of the Korean hydrogen and new energy society
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    • v.32 no.6
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    • pp.618-635
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    • 2021

  • Environmental issues caused by our dependence on fossil fuels have caused our society to move toward new renewable sources of energy and chemicals. In this study, we develop an integrated process that co-produces butene oligomer (i.e., biofuels) and 1,3-butadiene (i.e., monomer for the production of synthetic rubber). To minimize utility consumption, we conduct heat integration. Then, we conduct a range of techno-economic analysis and life-cycle assessment to investigate economic and environmental feasibility of the proposed process.

  • https://doi.org/10.7316/KHNES.2021.32.6.618 인용 PDF KSCI