• 월간산업보건
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• s.59
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• pp.24-28
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• 1993

vinyl chloride는 간(liver)의 angiosarcoma를 일으키는 물질로서 이미 잘 알려져 있으며 이들의 관련성은 직업성 암(occupational cancer)의 전형적인 예로 다루어지고 있다. ACGIH에서 발행하는 TLV책자(Documentation of the Threshold Limit Values and Biological Exposure Indices)를 보면 이 물질이 어떠한 역학적인 연구들을 통하여 A1a(Recognized human Carcinogen)에 이르게 되었는지를 알 수 있다. 이 글에서는 vinyl chloride가 남성의 생식기관에 미치는 영향에 대한 논의를 소재로 하여 우리가 역학논물을 대할 때에 어떠한 관점에서 살펴보아야 할 것인가를 논하고자 하였다.

• Proceedings of the Polymer Society of Korea Conference
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• 2006.10a
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• pp.153-154
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• 2006

The development of metal catalysts that can polymerize or copolymerize "polar" $Ch_2=CHX$ monomers by insertion mechanisms would significantly expand the scope of metal-catalyzed polymerization and enable the synthesis of new materials with enhanced properties. We have studied the reactions of single-site olefin polymerization catalysts with vinyl chloride, acrylonitrile, and vinyl ethers, in order to probe monomer coordination trends, insertion rates and regioselectivity, and the structures and reactivity of metal alkyls that contain functional groups on the alpha and beta positions of the alkyl chain. These studies provide insights to the key issues that underlie the "polar monomer" problem. Copolymerization of olefins and selected vinyl ethers has been achieved.

• 월간산업보건
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• s.281
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• pp.22-25
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• 2011

• 월간산업보건
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• s.282
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• pp.22-27
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• 2011

• 월간산업보건
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• s.285
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• pp.33-36
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• 2012

• 월간산업보건
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• s.286
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• pp.11-13
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• 2012

• 월간산업보건
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• s.284
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• pp.12-17
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• 2011

• 월간산업보건
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• s.283
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• pp.24-30
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• 2011

• Journal of the Korean Electrochemical Society
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• v.7 no.3
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• pp.148-154
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• 2004

Ammonium ion selective electrodes have been prepared using nonactin as an ionophore and poly(vinyl chloride) (PVC) or polyurethane(PU) as a polymer matrix with or without a plasticizer, bis(2-ethylhexyl) adipate, and their performances have been evaluated. The reults indicate that PU-based electrodes can be designed to perform better although PVC-based electrodes generally show better performances. In efforts to explain the obervation, we also carried out atomic force microscopy as well as impedance studies, and the results suggests that islands of ion-ophores are formed in the PVC membranes through which ion transfers appear to be more facile than through the PU membranes. The PU membranes appear to have ionophores better dispersed throughout the film and are more resistive to ion mobilities in comparison to PVC films.

• Membrane Journal
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• v.25 no.4
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• pp.310-319
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• 2015

Three kinds of anion-exchangeable functional groups with different hydrocarbon molecular structures were introduced to vinyl benzyl chloride-based membrane to understand the effect of attached function in anion-exchange membrane. Trimethylamine (TMA) as an aliphatic fuction, N-methylpiperidine (MP) as an alicyclic fuction and pyridine (Py) as an aromatic function were introduced by amination. The respective reactivity was observed by the trace of membrane resistance( MER)/ion exchange capacity (IEC) and the increasing order of reactivity was Py < MP < TMA. Meanwhile, SEM photograph showed the attached Py ion-exchange membrane was the most homogenous and compact structure in the study. In electrochemical properties, the attached Py ion-exchange membrane showed the MER ($5.0{\Omega}{\cdot}cm^2$ >, in 0.5 mol/L NaCl), comparable to those of commercial membrane (AMX). All results showed that the resonance structure of attached functional group might contribute to the preparation of homogenous anion-exchange membrane.