• Korean Chemical Engineering Research
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• v.50 no.1
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• pp.50-54
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• 2012

In this study, PANI and PANI/$TiO_2$ composites were prepared as electrode materials for a supercapacitor application. Cyclic voltammetry (CV) was performed to investigate the supercapacity properties of these electrodes in an electrolyte solution of 6 M KOH. The PANI/$TiO_2$ composites were polymerized by amount of various ratios through a simple in-situ method. The morphological properties of composites were analyzed by SEM and TEM method. The crystallinity of the composite and $TiO_2$ particle size were identified using X-ray diffraction (XRD). In the electrochemical test, The electrode containing 10 wt% $TiO_2$ content against aniline units showed the highest specific capacitance (626 $Fg^{-1}$) and delivered a capacitance of 286 $Fg^{-1}$ reversibly at a 100 $mVs^{-1}$ rate. According to the surface morphology, the increased capacitance was related to the fact that nano-sized $TiO_2$ particles (~6.5 nm) were uniformly connected for easy charge transfer and an enhanced surface area for capacitance reaction of $TiO_2$ itself.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2001.07a
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• pp.259-262
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• 2001

Stable polyaniline-dodecylbenzenesulfonic acid (PANI-DBSA) fully dissolved in toluene was obtained by a direct one-step emulsion polymerization technique. The polymerization of aniline was carried out in an emulsion comprising water, toluene and DBSA acting both as a surfactant and a dopant for PANI. After the proper washing process was performed, the conductivities of obtained PANI-DBSA complexes increased with increase APS/Aniline molar ratio and DBSA/Aniline molar ratio. The UV-Vis absorption spectra and TGA thermograms of PANI-DBSA complexes also supported these results. PANI-DBSA/PS blends were prepared by mixing PANI-DBSA complexes with PS in toluene. These blends exhibited electrical conductivity of 0.371S/cm at a low PANI-DBSA content (7 wt.%)

• Proceedings of the KIEE Conference
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• 2003.07c
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• pp.1457-1459
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• 2003

Space charge distributions and behaviors of polystyrene/polyaniline conducting blends were investigated using a pulsed electroacoustic(PEA) method. It was found that positive charges were accumulated near the cathode with increasing polyaniline content in polystyrene/polyaniline when electric field was applied. Breakdown phenomena was investigated by breakdown test and it was observed that dielectric strength was diminished as polyaniline content was increased. By Scanning Electron Microscopy, corss-sectional views of polystyrene/polyaniline conducting blends were observed that the particles of polyaniline were well distributed in polystyrene.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2004.11a
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• pp.275-278
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• 2004

Electro-Active Paper (EAPap) is attractive for EAP actuator due to its merit in terms of light weight, dry condition, large displacement output, low actuation voltage and low power consumption. The EAPap is based on cellulose paper, and is shown to involve primarily transport of ions in response to an external electric field. This actuating mechanism is similar to conductive polymer based actuators. For performance improvement of EAPap, hybrid actuators are tried. The actuators based on cellulose paper attached conducting polypyrrole, polyaniline and single wall carbon nanotube/polyaniline(emeraldine base) have been achieved by Electro chemical deposition and mechanical deposition of the polymers onto cellulose paper.

• Textile Coloration and Finishing
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• v.8 no.5
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• pp.25-48
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• 1996

이 연구의 목적은 에틸렌이민 유도체를 갖는 아조계 분산 염료의 폴리에스테르 섬유에의 응용과 최적화된 폴리에스테르 염색 조건의 확립이다. 이들 아지리디닐 염료는 구조가 유사하며 말단에 하이드록시기를 갖는 염료(아지리디닐 염료의 가수분해 형태)와 비교하여 최대 흡수 파장의 천색적으로 천이 됨을 알 수 있었다. 세가지 아지리디닐 모노 아조 염료와 이들 염료의 가수분해 된 형태 그리고 디메틸아니린계 아조 염료의 폴리에스테르 섬유에 대한 염색 및 견뢰도 성질이 조사되었다. 아지리디닐 아조 염료는 산성 조건에서보다 염기성 조건하에서 보다 안정하였고, 뛰어난 build-up이 높은 pH조건에서 얻어졌으며, 폴리에스테르 염색 시 130$^{\circ}C$, pH 10의 조건에서 최적화된 색상 강도를 얻었다. 아지리디닐 염료는 이 염료의 가수분해 형태와 디메틸아닐린 염료와 비교하여 개선된 세탁 견뢰도를나타내었고 이는 용매 추출을 이용하여 확인 하였다. 아지리디닐 아조 염료는 역시 광 련뢰도에서도 또한 상용화된 분산 염료에 비교하여 높은 결과를 나타내었다.

• The monthly packaging world
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• s.190
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• pp.124-144
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• 2009

식품의약품안전청이 가구 및 용기 포장의 기준 및 규격 일부를 개정고시했다. 식약청은 폴리카보네이트 등에 대해 비스페놀 A의 규정과 유리제, 도자기제 등에 대해 납, 카드뮴 규격을 강화하며, 금속관 및 금속제의 규격을 단일화하고 용출규격 강화 및 폴리아미드/나일론 재질에 대한 4,4‘-메틸렌디아닐린 용출규격을 신설하여 식품용 기구 및 용기 포장의 안전성을 확보하고자 한다. 본고에서는 주요 내용과 함께 신문구조문을 비교해 살펴보도록 한다.

• Polymer(Korea)
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• v.34 no.6
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• pp.553-559
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• 2010

The paper describes the preparation and characterization of conductive polyaniline-modified polymers by growing of aniline onto functionalized poly(styrene-co-p-methylstyrene) [P(St-co-MSt)]. For this purpose, P(St-co-MSt) was synthesized via nitroxide mediated radical polymerization (NMRP) and then N-boromosuccinimide was used for introduction of bromine to the benzylic positions of copolymer. Afterwards, 1,4-phenylenediamine was linked to the brominated P(St-co-MSt) and functionalized copolymer $[P(St-co-MSt)-NH_2]$ was prepared. The graft copolymerization of aniline monomers onto functionalized P(St-co-MSt) was initiated by oxidized phenylamine groups after addition of ammonium peroxydisulfate (APS), and p-toluenesulfonic acid-doped PANI was chemically grafted onto P(St-co-MSt) via oxidation polymerization. The obtained terpolymer was studied by FTIR and UV-Vis spectroscopy and its thermal behaviour were examined by DSC and TGA analyses. The conductivity of terpolymer was measured by four-point probe method and electroactivity was measured by cyclic voltammetry (CV). The solubility of P(St-co-MSt)-g-PANI was examined in common organic solvents.

• Proceedings of the KIEE Conference
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• 2003.10a
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• pp.95-97
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• 2003

This paper describes electrical properties such as electrical conduction characteristics and space charge distributions of polyaniline/polystyrene conducting blends. It is interesting to note that the charging current decreased as the temperature was elevated when DC voltage was applied, and also the hopping distance decreased with the increase of temperature for the PANI/HIPS blends, while generally, the hopping distance decreases as the charging current increases. It is exposed that this result is opposed to widely known phenomenon. It could be examined viewing space charge distributions by a pulsed electroacoustic (PEA) method.

• Journal of the Korean Applied Science and Technology
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• v.24 no.4
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• pp.399-409
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• 2007

Characteristics of polyaniline anti-corrosive coatings with various primer coating resins(epoxy resin, urethane resin, and others) and top coating resins(epoxy and acrylic urethane resins) were investigated through adhesion, acid resistance, alkaline resistance, water resistance, and anti-corrosion tests. As a result, the anti-corrosive properties of the prepared coatings using polyaniline varied with the types of primer and top coating resins. In this condition, the properties of adhesion, chemical resistance, and water resistance were found to be very satisfactory when using emeraldine base (EB) of polyaniline blended with single-packaged urethane and acrylic urethane resins as the primer coatings, and using acrylic urethane resin as the top coatings. Also, the anti-corrosive function of these anti-corrosive coatings was well preserved for 1000 hr in the salt spray experiment.

• Proceedings of the KIEE Conference
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• 2002.07c
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• pp.1428-1430
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• 2002

Polyaniline/polystyrene conducting blends were prepared and measured with the mechanical properties such as tensile strength and elongation and the electrcal properties such as surface resistance, electrical conductivity and dielectric loss tangent. The percolation threshold concentration of blends was 5phr of polyaniline and the morphology of blends was setting colser to that of polyaniline at higher concentration. The dielectric loss increased up to $10^5$ at the 50 % of polyaniline and was much influenced by frequency than temperature at higher concentration of polyaniline.