• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 2003년도 가을 학술발표회 논문집
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• pp.263-264
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• 2003

전기방사는 섬유를 제조하는 전형적인 방법인 건식, 습식, 용융방사 등에 비해 설치가 간단하고, 관리하며, 장비 가격이 저가인 장점을 가지고 있다. 전기방사에 의해 제조된 웹은 단위부피당 큰 표면적을 가지고, 매우 작은 기공을 가지고 있기 때문에 필터소재, 강화섬유, 상처보호 치유소재, 인공혈관, 약물전달 시스템과 같은 의료용 소재 등 많은 분야에 응용이 가능하다[1]. (중략)

• 한국의류산업학회지
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• 제22권2호
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• pp.233-239
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• 2020

We proposed a simple process of fabricating electroconductive textiles by coating conductive polymer PEDOT:PSS (Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)) on biocompatible PLA (Poly Lactic Acid) nanofiber web for application to smart healthcare. Electroconductive textiles were obtained by a drop-coating process using different amounts of PEDOT:PSS solutions., DMSO (dimethyl sulfoxide) was then used as an additive in the post-treatment process to improve conductivity. The surface morphology of the specimens was observed by FE-SEM. The chemical structures of the specimens were characterized using FTIR. The electrical properties (linear and sheet resistance) of the specimens were measured. The effect of the bending angles on the electrical properties was also investigated to confirm their applicability as wearable smart textiles. FE-SEM and FTIR analysis confirmed that the deposition of PEDOT:PSS on the PLA nanofiber web surface was successful. The conductivity of the PEDOT:PSS/PLA nanofiber web was enhanced up to 1.5 ml with an increasing amount of PEDOT:PSS solutions, but there was no significant difference at 2.0 ml. The optimum condition of PEDOT:PSS deposition was established to 1.5 ml. Even when the specimen coated with 1.5 ml was bent every 30°, the change in the electrical resistance values was still low within 3.7 Ω. It confirmed that stable electrical performance was maintained and proved the applicability as a flexible textile sensor.

• 한국결정성장학회지
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• 제21권3호
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• pp.124-128
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• 2011

전기방사법을 이용하여 제조된 웹은 높은 비표면적 및 다공성으로 약물전달시스템에 적용하고자 널리 연구 되어지고 있다. 본 연구에서는 생체적합성을 가진 생분해성 고분자 Poly(lactic acid)(PLA)와 생체안정성을 가지는 재료인 $TiO_2$를 이용하여 복합소재를 제작하였다. 인체에 유해한 용매인 chloroform이 포함되어 있지 않은 복합화를 위하여 용융전기방사법을 이용하여 나노섬유를 제작하였다. 이렇게 제조된 PLA/$TiO_2$ web을 scanning electron microscope(SEM)와 field emission transmission electron microscope(FE-TEM)을 이용하여 섬유의 모양을 확인하였고, X-ray diffractometer(XRD)판 이용하여 PLA/$TiO_2$ web의 결정구조를 분석하였다.

• 한국의류산업학회지
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• 제23권4호
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• pp.527-535
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• 2021

In this study, electroconductive textiles were developed by screen-printing technology using a complex solution of PEDOT:PSS/AgNW on a polylactic acid nanofiber web. A performance evaluation was then conducted to utilize this electroconductive textile as a signal transmission line. To obtain highly conductive electroconductive textiles, this study sought to determine the optimal mixing ratio of PEDOT:PSS/AgNW. Sheet resistance was measured to evaluate the electrical properties of electroconductive textiles, Finite element-scanning electron microscopy images were then used to examine surface properties, and Fourier transform-infrared analysis was performed to evaluate chemical properties. The signal waveform characteristics of the electroconductive textile were observed using a signal generator and an oscilloscope. Radio-frequency characteristics were then evaluated to confirm frequency range, and bending tests were conducted to evaluate durability. The signal transmission lines produced in this study had a sheet resistance value of 3.30 ?/sq, and signal transmission performance was evaluated to observe that the input value of the voltage was nearly identical to the output value. In addition, S21 analysis confirmed that it was available in the frequency domain up to 35 MHz. The performances of the transmission lines were maintained after 100, 200, 500, and 1,000 repeated bending tests, and sufficient durability was confirmed.