• 반도체디스플레이기술학회지
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• 제21권2호
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• pp.7-10
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• 2022

A functional polyethylene terephthalate substrate to increase light extraction efficiency of organic light-emitting diodes is studied. We formed nano-structured PET surfaces by controlling the power, gas, and exposure time of the linear ion-beam. The haze of the polyethylene terephthalate can be controlled from 0.2% to 76.0% by changing the peak-to-valley roughness of nano structure by adjusting the exposure cycle. The treated polyethylene terephthalate shows average haze of 76.0%, average total transmittance of 86.6%. The functional PET increases the current efficiency of organic light-emitting diodes by 47% compared to that of organic light-emitting diode on bare polyethylene terephthalate. In addition to polyethylene terephthalate with light extraction performance, by conducting additional research on the development of functional PET with anti-reflection and barrier performance, it will be possible to develop flexible substrates suitable for organic light-emitting diodes lighting and transparent flexible displays.

• 공업화학
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• 제9권6호
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• pp.930-934
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• 1998

Dimethyl terephthalate, ethylene glycol, polyethylene glycol 및 계면활성제인 dodecylbenzene sulfonate를 반응시켜 개질시킨 poly(ethylene terephthalate) 중합체를 합성하였다. 이들의 점성도, 색상변화, 접촉각측정법으로 친수성 등을 살펴보았다.

• Journal of Pharmaceutical Investigation
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• 제16권1호
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• pp.8-11
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• 1986

There have been many difficulties in utilization of polyethylene (PE) container for volatile ingredients because of its high permeability. We selected glycol-modified polyethylene terephthalate (PETG) lately being used and evaluated the stability of 0.5% chlorobutanol solution for PETG. We used PE bottle, glass flask and rubber stoppered vial for comparison and assayed chlorobutanol contents of the samples stored at various temperatures for nine weeks by HPLC method. The results indicated that the stability of chlorobutanol in PETG container was almost similar to that in glass flask, and was superior to that in PE bottle and rubber stoppered vial.

• 복합신소재구조학회지
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• 제4권1호
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• pp.33-38
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• 2013

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 2002년도 봄 학술발표회 논문집
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• pp.177-178
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• 2002

일반적으로 폴리에틸렌테레프탈레이트(polyethylene terephthalate)는 에틸렌글리콜(ethylene glycol)과 테레프탈산(terephthalic acid) 또는 디메틸렌 테레프탈레이트(dimethylene terephthalate)를 중합시켜 만든다[1]. 폴리에스테르는 전도성 필름, 전기전자분야, 청량음료의 병 등으로 널리 사용되고 있다. 또한 뛰어난 강도, 내열성을 이용하여 자동차분야, 전기분야에서 금속, 페놀수지를 대체하는 용도로 사용되고 있다. (중략)

• 한국조명전기설비학회지:조명전기설비
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• 제10권3호
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• pp.78-85
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• 1996

표면전위측정 수단을 이용하여 polyethylene terephthalate의 electret 구조를 해명하는 실험을 하였다. 시료에 전극을 증착하므로서 내부의 전하생성과 감쇠를 관측하였다. electret 의 기구에는 hetero charge 와 home charge가 공존하고 있으며 model로 2전하이론을 기반으로 연구하였는데 hetero charge는 쌍극자와 내부의 이온 변위로 되고 hetero charge를 형성하는 것은 외부에서 주입된 전하라고 생각된다.

• Bulletin of the Korean Chemical Society
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• 제32권2호
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• pp.541-546
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• 2011

In this study, conjugate fibers were prepared from 1,4-cyclohexanedimethanol-modified polyethylene terephthalate (PET) resin using side by side conjugate spinning, sea-island type conjugate spinning, and split type conjugate spinning methods, and the properties of the conjugate fibers were investigated via several techniques. When viscosity increased, the tenacity of side by side conjugate fibers was increased, whereas elongation decreased. The sea-island conjugate fibers showed lower weight loss and surface color difference (K/S) values relative to that of regular PET fibers at the same conditions. The SEM results indicate that orange type spilt readily produced at a temperature range of 120 - 140$^{\circ}C$.

• 공업화학
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• 제30권6호
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• pp.707-711
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• 2019

The feasibility of waste concrete as a catalyst for the effective pyrolysis of polyethylene terephthalate (PET) was examined using thermogravimetric (TG) and pyrolyzer-gas chromatography/mass spectrometry (Py-GC/MS) analyses. TG analysis results indicated that the maximum decomposition temperature of PET is not altered by the use of waste concrete, showing similar values (407 ℃ and 408 ℃ at 5 ℃/min). Meanwhile, the volatile product distribution data obtained from the Py-GC/MS analysis revealed that the use of waste concrete promoted the deoxygenation reaction via converting the oxygen containing products such as benzoic acids, benzoates, and terephthalates to valuable deoxygenated aromatic hydrocarbons including benzene, toluene, ethylbenzene, and styrene. This suggests that the waste concrete can be used as a potential catalyst for the production of valuable aromatic hydrocarbons from PET pyrolysis.

• Transactions on Electrical and Electronic Materials
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• 제9권2호
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• pp.79-83
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• 2008

The dampness by treating the surface with polyethylene terephthalate (PET) film was measured to grasp the plasma parameters and was observed the surface condition with an atomic force microscope (AFM) to find the causes of the dampness. Also, the vibrational and rotational temperatures in the plasma were calculated after identifying the radicals within the plasma by analyzing the emission spectral with an emission spectrum. The hydrophilic properties were enhanced, by treating the surface of the PET film with non-equilibrium atmospheric discharge plasma. When the rotational temperature was 0.22 to 0.31 eV within the plasma, surface modification control could be easily carried out to surface treatment of PET film on non-equilibrium atmospheric pressure plasma.

• 한국위험물학회지
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• 제6권2호
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• pp.55-61
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• 2018

In this study, the molten metal protective performance of various molten metal protective clothing materials such as herringbone twill laminated aluminium foils, oxydized-polyacrylonitrile laminated with aluminium deposited polyethylene terephthalate films, twill fabric laminated with aluminium deposited polyethylene terephthalate films and nonwoven laminated with aluminum deposited polyethylene terephthalate films, were evaluated according to modified EN ISO 9185. The results showed that the molten metal protective performance of tested samples improved with the increase in fabric structure density, weight and thickness. In addition the effect of the thickness of aluminum foil on the molten metal protective performance is not significant. It was found the fabric is more important in the molten metal splash protective clothing.