• 제목/요약/키워드: styrene

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스티렌의 연소특성치 측정 및 예측 (Measurement and Prediction of Combustion Properties of Styrene)

  • 하동명;나병균
    • 한국가스학회지
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    • 제17권4호
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    • pp.70-76
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    • 2013
  • 스티렌의 안전한 취급을 위해, 폭발한계는 문헌을 통해 고찰하였고, 인화점과 발화지연시간에 의한 발화온도를 측정하였다. 그 결과, 스티렌의 폭발하한계는 0.9 Vol.%, 상한계는 8.0 Vol.%를 추천하고, 밀페식 장치에 의한 스티렌의 하부인화점은 $29^{\circ}C{\sim}31^{\circ}C$로 측정되었으며, 개방식에서는 $32^{\circ}C{\sim}36^{\circ}C$로 측정되었다. ASTM E659 장치를 사용하여 자연발화온도와 발화지연시간을 측정하였고, 스티렌의 최소자연발화온도는 $460^{\circ}C$로 측정되었다.

Poly(styrene carbonate)의 합성 및 열분해에 의한 styrene carbonate의 제조 (Synthesis of Poly(styrene carbonate) and Preparation of Styrene Carbonate by Thermal Degradation)

  • 이윤배;신은정;유진이
    • 공업화학
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    • 제19권1호
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    • pp.133-136
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    • 2008
  • 온실 가스 가운데 하나인 이산화탄소를 줄이기 위한 연구의 일환으로 이산화탄소와 산화 스틸렌을 원료로 하고 zinc glutarate를 촉매로 하여 poly(styrene carbonate)를 합성하였다. 여러 가지 분광학적인(FT-IR, $^1H$-NMR, $^{13}C$-NMR, GC-MS) 분석결과 교대 공중합체임이 확인되었으며, MALDI법에 의하여 분자량($\bar{M}_n$)은 $5.0{\times}10^4$이며, 유리전이온도는 $88^{\circ}C$이고, 융융점은 $240^{\circ}C$로 밝혀졌다. 이 고분자를 열분해하면 고리형 카보네이트인 styrene carbonate가 생성되는 것도 확인하였다.

유독성 유기용매의 촉매산화공정에서 혼합조성에 따른 간섭효과 (Inhibition Effects of Toxic Solvent Mixture in Catalytic Oxidation Process)

  • 이승범;김원일;홍인권;김형진
    • 환경위생공학
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    • 제16권3호
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    • pp.72-79
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    • 2001
  • The selective catalytic oxidation of toxic aromatic solvents (benzene, toluene, ethylbenzene, and styrene) and their mixtures were studied on a $Pt/{\;}{\gamma}-Al_2O_3$ catalyst at temperature ranging from $160~350^{\circ}C$. The deep conversion of aromatic solvents was increased as the inlet concentration was decreased and the reaction temperature was increased. The reactivity increases in order benzene > toluene > ethylbenzene > styrene. In mixture, remarkable effects on reaction rate and selectivity have been evidence ; the strongest inhibition effect is shown by styrene and increase in a reverse order with respect to that of reactivity. The inhibition effect was increased in order styrene > ethylbenzene > toluzene > benzene. This trend is due to the competition adsorption between the two or three reactants on the oxidized catalyst. Also, the deep conversion change of benzene was a small in tertiary mixtures(including of benzene and styrene) comparing with conversion characteristics of binary mixture with styrene. This result was due to small concentration of styrene. which had very strong inhibition effect.

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Poly(styrene carbonate)의 열분해에 의한 고리형 Styrene Carbonate의 합성 (Synthesis of Cyclic Styrene Carbonate via Pyrolysis of Poly(styrene carbonate))

  • 유진이;신은정;구대철;이윤배
    • 한국산학기술학회:학술대회논문집
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    • 한국산학기술학회 2006년도 춘계학술발표논문집
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    • pp.569-571
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    • 2006
  • 지구의 온난화를 가속시키는 주요물질인 이산화탄소($CO_2$)와 styrene oxide를 Zinc Glutarate를 촉매로 하여 800-1000psi, $750^{\circ}C$에서 반응시켜 합성한 Poly(styrene carbonate)(PSC)를 질소분위기하 $750^{\circ}C$에서 열분해하여 고리형 styrene carbonate를 합성하였다. 생성물은 GC-Mass로 분석하여 확인하였다.

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Styrene Oxide에서 2-Phenylethanol(PEA)를 생성하는 Pseudomonas putida Strain 2150-2의 분리 및 동정

  • 양인영;황순옥
    • 한국미생물·생명공학회지
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    • 제24권2호
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    • pp.155-159
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    • 1996
  • The strain which produces 2-phenylethanol (PEA) from styrene oxide was isolated from soil samples near Ulsan PO/SM plant. The isolated strain was identified as Pseudomonas putida through its morphological, physiological characteristics, and DNA G+C contents. Its metabolic pathway from styrene oxide to 2-phenylethanol was studied and it was found that styrene oxide was transformed to phenylacetaldehyde, to 2phenylethanol (PEA), and then to phenylacetic acid by this strain.

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Phenyl Acetylene과 Styrene의 共重合 (Copolymerization of Phenyl Acetylene with Styrene)

  • 변형직;김재록;이웅무
    • 대한화학회지
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    • 제13권4호
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    • pp.387-393
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    • 1969
  • Gamma-ray induced copolymerization of phenyl acetylene with styrene is compared with that of the Ziegler catalyzed. The reactivity of styrene is greater than that of phenyl acetylene in the gamma-ray induced polymerization but much less than that of phenyl acetylene in the Ziegler catalyzed. The resulting copolymer is identified by means of DTA and spectrophotometry. Further, the liquid scintillation counting of styrene-${\alpha}-C^{14}$clarified the relative composition of the copolymers.

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해외정보

  • 한국발포스티렌재활용협회
    • 환경사랑
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    • 통권50호
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    • pp.10-11
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    • 2007
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