• Journal of Information Display
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• 제12권4호
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• pp.205-208
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• 2011

Herein, the integration of solution-processed polymer thin-film transistors (TFTs) that were fabricated using selective wettability through ultraviolet (UV) exposure into a reflective liquid crystal display is demonstrated. From the experimental results of energy-dispersive spectroscopy, the composition of carbon and fluorine enhancing the hydrophobicity in the polymer chains was found to play a critical role in the wetting selectivity upon UV exposure. The polymer TFTs fabricated through the wettability-patterning process exhibited long-term stability and reliability. This wetting-selectivity-based patterning technique will be useful for constructing different types of solution-processed electronic and optoelectronic devices.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2001년도 The 6th International Symposium of East Asian Resources Recycling Technology
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• pp.730-733
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• 2001

Separation of PET and PVC is a key technology to achieve effective plastics recycling but no efficient and economically feasible method has been developed yet. The application of flotation was investigated by many researchers but the causes of the selectivity were not clarified. This paper described the adsorption mechanism of wetting agents onto plastics, using the agents which have various polarity and hydrocarbon chain length. It was found that (1) hydrophobic interaction played a predominant role for the adsorption, (2) anionic wetting agents could be adsorbed onto negatively charged plastics with the polar radicals oriented outer part of the plastics, then often depressed plastics more effectively than cationic agents, and (3) PET and PVC could be separated with dodecyamine hydrochloride and sodium dodecyl- sulfonate in the concentration ranges of 1.0$\times$10$^{[-10]}$ $^{6}$ -5.0$\times$10$^{[-10]}$ $^{5}$ and 2.0$\times$10$^{[-10]}$ $^{6}$ -1.0$\times$10$^{[-10]}$ $^{5}$ mo1/1, respectively.

• 멤브레인
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• 제7권2호
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• pp.57-64
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• 1997

새로운 분리공정으로서 Membrane Distillation(MD)에 대하여 고찰하였다. 정밀여과에서 이용되고 있는 소수성막이 MD공정에 적합한 막소재가 된다. MD는 고온보다는 완화된 온도에서 100%에 가까운 선택도를 가지면서 기존의 수처리 공정을 간소화시킬 수 있는 가능성이 있다. MD는 막표면의 기공에서 층기-액체간의 상분리가 일어나는 분리원리를 이용한다. 공급액 및 투과액의 온도, 조성, 막의 젖음현상, 열 및 물질전달이 MD의 선택도와 플럭스를 결정할 수 있다.