• Macromolecular Research
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• v.9 no.5
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• pp.292-295
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• 2001

A cross-linked solid polymer electrolyte was prepared by copolymerizing photochemically acrylonitrile (AN), oligo(ethylene glycol ethyl ether) methacrylate, oligo(ethylene glycol) dimethacrylate in the presence of lithium perchlorate as a lithium salt, ethylene carbonate-propylene carbonate as a mixed plasticizer, and poly(ethylene oxide) as a polymer matrix. The maximum ionic conductivity of the polymer electrolyte was 2.35$\times$10$\^$-3/ S/cm. The interface resistance of the polymer electrolyte was very low compared to that of the polymer electrolyte without AN. The former electrolyte was stable up to 4.3 V and the Ah efficiency was nearly 100% during the charge-discharge cycle.

• Polymer Science and Technology
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• v.12 no.3
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• pp.331-343
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• 2001

• Polymer Science and Technology
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• v.16 no.1
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• pp.48-56
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• 2005

• Macromolecular Research
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• v.16 no.8
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• pp.745-748
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• 2008

• Polymer Science and Technology
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• v.19 no.1
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• pp.25-34
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• 2008

• Macromolecular Research
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• v.13 no.4
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• pp.352-355
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• 2005

• Polymer Science and Technology
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• v.10 no.4
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• pp.434-442
• /
• 1999

• Macromolecular Research
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• v.15 no.5
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• pp.393-395
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• 2007

• Macromolecular Research
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• v.13 no.2
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• pp.88-95
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• 2005

Melt blending of Bisphenol A polycarbonate (PC) and poly(trimethylene terephthalate) (PTT) was carried out over the entire composition range. The mixing time was varied up to 90 min. The resulting samples were analyzed by FT-IR, DSC, XRD, DMTA, $^{1}H NMR$, and SEM. The process of transesterification between the two polymers and their resulting compatibilization were observed. The behaviors of the PTT-rich and PC-rich blends were different and an equilibrium was found to exist. Peculiar behavior, which was different from that of the PTT-rich and PC-rich blends, was exhibited by the 50/50 (PTT/PC) blend.

• Proceedings of the Polymer Society of Korea Conference
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• 2006.10a
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• pp.240-240
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• 2006

Thin films of poly(vinyl cinnamate) (PVCi) were prepared on indium tin oxide (ITO) glass and silicon substrates by conventional spin coating and subsequent drying process. The thicknesses of the films ranged 50-120 nm. The films' surface was treated by rubbing, ultraviolet exposure or their combinations in various ways with changing rubbing strength and exposure dose. These films were examined in detail in the aspects of surface morphology and chain orientation. Further, the anchoring and orientation behaviors of liquid crystals on the film surfaces were investigated. All the results will be discussed in detail.