• 한국의류학회지
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• 제8권1호
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• pp.39-45
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• 1984

The effects of Temperature on the removal of triglyceride were studied with soaps having various chain lengths of alkyl group. Cellophane, polyester film and alkali-treated polyester film were soiled with tripalmitin, tagged with 0" and detergency was evaluated by analysing the tripalmitine on the fabric before and after washing by means of liquid scintillation counting. The results were as following: 1) Triglyceride was completely removed from cellophane in distilled water without surfactant at any temperature, because of the hydrophillic nature of cellulose. The detergency of triglyceride from polyester film fully depended on the state of tripalmitin. The detergency of alkali treated polyester film was better than that of untreated polyester film at lower temperature due to increased hydrophillcity, but worse at higher temperature due to the diffusion of molten tripalmitin into the grooves, formed by alkali treatment. 2) The detergency from polyester film was increased with elevating temperature and after reaching some optimum detergencies, the detergencies were rather decreased with increasing temperature. The temperatures of optimum detergency were shifted to higher with increasing chain length of alkyl group. 3) When the soiled film was baked at $60^{\circ}C$ and $70^{\circ}C$ for 20 min, the detergency vs. temperature was much the same as the case of without-baking. These results indicate that the detergency of triglyceride was largely correlated with the suspending power of surfactants at low temperature and with state of soil and hydrophilicity of substrates with elevating temperature.

• Bulletin of the Korean Chemical Society
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• 제33권7호
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• pp.2345-2351
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• 2012

Conductive honeycomb-patterned polystyrene (PS) thin films were prepared by the formation of a polyaniline (PANI) thin layer on the surface of the patterned PS thin films using simple one-step chemical oxidative polymerization of aniline. The in situ chemical oxidation polymerization of aniline hydrochloride solution on the patterned structure of the PS films was conducted in the presence of multiwalled carbon nanotubes (MWCNT) to prepare the PANI-MWCNT/PS composite film. The concentration (wt %) of MWCNT was varied in the range of 1%-3% by weight. The dependence of surface morphology of the PANI/PS and PANI-MWCNT/PS composite film to the polymerization time was observed by scanning electron microscopy. The room temperature DC conductivity was obtained by the four-probe technique. The conductivity of the PANI-MWCNT/PS composite film was affected both by the MWCNT concentration and polymerization time. In addition, DC electrical field was loaded during the oxidative polymerization to affect the distribution of the MWCNT included in the composite film, varying the loading voltage in the range of 0.1-3.0 V. The conductivity of the PANI-MWCNT/PS composite film was increased as loading voltage rose. However, this increase stops at a voltage higher than the critical value.

• 한국염색가공학회지
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• 제16권5호
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• pp.28-34
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• 2004

The polarizing film application exploits the unique physicochemical properties between PVA(Poly vinyl alcohol) film and CTA(Cellulose triacetate) film. However, hardly any research was aimed at improving the adhesion characteristics of the CTA film by radio frequency(RF) plasma treatment at argon(Ar) gaseous state. In this report, we deal with surface treatment technology for protective CTA film developed specifically for high adhesion applications. After Ar plasma, surface of the films is analyzed by atomic force microscopy(AFM), roughness parameter and peel strength. Furthermore, the wetting properties of the CTA film were studied by contact angle analysis. Results obtained for CTA films treated with a glow discharge showed that this technique is sensitive to newly created physical functions. The roughness and peel strength value increased with an increase in treatment time for initial treatment, but showed decreasing trend for continuous treatment time. The result of contact angle measurement refer that the hydrophilicity of surface was increased. AFM studies indicated that no considerable change of surface morphology occurred up to 3 minutes of treatment time, but a considerable uneven of surface structure resulted from treating time after 5 minutes.

• 한국표면공학회:학술대회논문집
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• 한국표면공학회 2007년도 춘계학술발표회 초록집
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• pp.147-148
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• 2007

In this study, the technology to grow oriented nanotube thin film from dip-coated $TiO_2$ using hydrothermal method has been successfully developed. The effects of preparation parameters, such as reaction temperature, duration and post treatment conditions on the film morphologies and the adherence to the substrate, have been examined. A general formation mechanism of oriented titanate nanotube thin film is proposed in terms of the detailed observation of the products via two dimensional surface FESEM studies and HRTEM images. The overall formation of $TiO_2-based$ nanotube thin film can be summarized with three successive steps: (1) $TiO_2$ dissolving and amorphous $Na_2TiO_3$ deposition process; (2) layered $Na_2Ti_3O_7$ formation via spontaneous crystallization and rapid growth process; (3) formation of nanotube thin film via $Na_2Ti_3O_7$ splitting and multilayer scrolling process of (100) planes around the c axis of $Na_2Ti_3O_7$.

• Mycobiology
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• 제47권2호
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• pp.250-255
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• 2019

In the present study, we aimed to determine the cause of surface film formation in three rice vinegars fermented using the traditional static fermentation method. The pH and total acidity of vinegar were 3.0-3.3 and 3.0-8.7%, respectively, and acetic acid was the predominant organic acid present. Colonies showing a clear halo on GYC medium were isolated from the surface film of all vinegars. Via 16S rDNA sequencing, all of the isolates were identified as Acetobacter pasteurianus. Furthermore, field-emission scanning electron microscopy analysis showed that the bacterial cells had a rough surface, were rod-shaped, and were ${\sim}1{\times}2{\mu}m$ in size. Interestingly, cells of the isolate from one of the vinegars were surrounded with an extremely fine threadlike structure. Thus, our results suggest that formation of the surface film in rice vinegar was attributable not to external contamination, to the production of bacterial cellulose by A. pasteurianus to withstand the high concentrations of acetic acid generated during fermentation. However, because of the formation of a surface film in vinegar is undesirable from an industrial perspective, further studies should focus on devising a modified fermentation process to prevent surface film formation and consequent quality degradation.

• 디지털융복합연구
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• 제12권9호
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• pp.325-333
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• 2014

현대영화에 나타난 스토리텔링의 구조적 경향을 아피찻퐁의 영화와 구조영화를 통해 비교분석하는 것이 본 연구의 목적이다. 구조적 특징과 관련하여 주요하게 논의된 개념은 반환영성인데 이는 1960,70년대 영미권을 중심으로 활동한 구조/물질주의 영화작가들의 형식적 실험에 영향을 받은 측면이 있다. 하지만 구조/물질주의 영화가 영화형식에 대한 극단적인 실험에 중심을 두고 있었다면 아피찻퐁의 영화는 이를 수용하고 넘어선 포스트모던 영화의 미학으로 확장되었다. 아피찻퐁은 주류적 스토리텔링방식을 거부하거나 무시하기 보다는 환영과 비환영의 개념사이에서 균형을 잡는다. 아피찻퐁은 이를 위해 영상과 음향의 외재성과 내재성을 창의적인 방식으로 활용한다. 현대 영화에서 관찰할 수 있는 주류적 스토리텔링 방식이 아리스토텔레스가 시학에서 언급한 방법론들의 현대적 변용에 기초하여 여전히 환영적 디제시스 창조에 관여하고 있는 반면 아피찻퐁은 구조/물질주의 실험영화의 미학적 성과 위에서 스토리텔링 전략의 새로운 방향을 모색한다.

• 디자인학연구
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• 제17권2호
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• pp.451-462
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• 2004

디지털시대가 도래하면서 그래픽디자인의 영역이 확대되어 필름, DVD, 인터랙티브TV, 모바일, DMB 등 영상디자인의 새로운 분야들에서 디자이너의 역할을 요구하기 시작했다. 이는 보다 진화된 뉴미디어 환경을 기반으로 한다는 점에서 디지털 영상디자인의 적용과 사례로 볼 수 있다. 뉴미디어 환경은 젊은 계층이 주 타깃이 되기에 영상언어의 표현기법이 달라지는 것도 필연적이라고 하겠다. 시각커뮤니케이션이 창조되고 분배되어 온 방법들이 이제는 더 이상 정지되어 있는 것을 원하지 않고, 다이내믹한 움직임으로, 다시 상호작용(Interaction)이라는 변화를 거쳐오면서 영상의 적용과 활용은 비할 수 없이 다각화되었다. 변화와 발전을 거듭하는 학문으로서 디자인의 정체성이 뉴미디어 환경에서 어떻게 진화하고 있는지를 조사ㆍ분석하여 향후 영상ㆍ디지털미디어 대학원교육의 방향을 가늠하기 위한 것이 본 연구의 주된 목표이다. 이를 위해 사례조사 및 시각디자인 교육시스템에 대한 선행연구를 토대로 하여 디자인고등교육에 있어 합리적인 교육시스템의 방식을 수용자 조사를 통해 검증하고자 하였다. 본 연구는 영상ㆍ디지털미디어 분야의 고급인재 양성방안을 찾는 것을 목적으로, 이를 위해 기존의 디자인 교육과 디지털 영상교육의 융합으로 현실 사회의 요구에 부응하는 진화된 교육시스템을 도출하고, 사회의 요구를 앞서가는 디자인 고등교육기관으로서의 위상을 제시하고자 한다.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2007년도 제32회 학술대회 초록집
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• pp.38-38
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• 2007

• 한국진공학회:학술대회논문집
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• 한국진공학회 1995년도 제9회 학술발표회 논문개요집
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• pp.76-77
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• 1995

• 한국자기학회:학술대회 개요집
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• 한국자기학회 2011년도 자성 및 자성재료 국제학술대회
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• pp.103-103
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• 2011