pISSN : 1225-1089 / eISSN : 2288-6419
Textile Science and Engineering(Text. Sci. Eng.) is the journal of the Korean Fiber Society. It was launched in 1964.
It is published bimonthly(February, April, June, August, October and December) in either Korean or English.
Total or a part of the articles in this journal are abstracted in Chemical Abstract Service, DOI/Crossref and Korea Citation Index.

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최근 발간 목록   (61권 3호, 6월  2024)

초고온 흑연화 처리 및 전구체 섬유 방사 연신비에 따른 PAN계 탄소섬유의 특성 분석
조현재  유승민  정동철  고태훈  김학용  정용식  김병석
In this study, the effects of ultra-high temperature graphitization and spinning elongation ratio were studied on the crystalline structure and mechanical properties of the PANbased carbon fibers. Three types of PAN (polyacrylonitrile)-based carbon fibers from Toray (T300, M40, and M46) were subjected to ultra-high temperature treatment at 2,800 °C, and then the crystal structure and strength/modulus of the graphitized carbon fibers (graphite fibers) were analyzed. Crystal size and orientation factor were investigated using 2D X-ray Diffraction. Single-fiber tensile tests were conducted using a linear Density and Tensile Tester (FAVIMAT+) to measure mechanical properties (strength and modulus). In addition, the synthesized PAN copolymer was dissolved in a DMSO solvent to prepare a spinning dope (~23%), and PAN precursor fibers were prepared under different elongation ratio through wet spinning. The result confirmed that the crystalline size (Lc) was increased by ultra-high temperature treatment and higher spinning elongation ratio and also thus mechanical properties was improved.
경화제 종류에 따른 TGDDM 에폭시 기반 우주환경용 탄소섬유 복합재료의 제조 및 특성 평가
이지은
In this study, the characteristics of TGDDM (N,N,N’,N’-tetraglycidyl-4,4’-diaminediphenylmethane) based epoxy resin for space applications were analyzed, and carbon/epoxy composites were fabricated using this resin as the matrix. M-MIPA (4,4’-methylenebis(2-isopropyl-6-methylaniline)) and M-DEA (4,4’-methylenebis(2,6-diethylaniline)) were used as base curing agents. Additionally, 3,3’-DDS (diaminodiphenyl sulfone) and 4,4’-DDS were respectively added to formulate the two types of epoxy matrices. The addition of 4,4’-DDS led to a lower initiation temperature and increased heat of reaction compared to 3,3’-DDS. However, the maximum exothermic temperature and activation energy showed no significant difference. Moreover, the addition of 4,4’-DDS increased the glass transition temperature, crosslink density, tensile strength, and strain at break of the epoxy. The thermal decomposition behavior of the cured epoxy indicated that with the addition of 4,4’-DDS, the activation energy was higher in the early stages of decomposition compared to 3,3’-DDS. However, it aintained a thermally stable region with negligible change in activation energy even as conversion increased. The flexural strength of the carbon/epoxy composites with 4,4’-DDS was 8.15% higher than that of the composites with 3,3’-DDS.
두께별 3D 프린팅 원통형 휴머노이드 로봇 팔 외장재 특성 분석
박예은  Dikshita Chowdhury  이선희
In this study, the exterior materials for humanoid robot arm were developed using a cylindrical(Cyl) printing method based on fused filament fabrication(FFF) 3D printing technology. The cylinder printing method uses a three-dimensional cylinder modelingand prints large area curled inside using FFF 3D printing. Shore 95 A thermoplastic polyurethane filament was utilized to print soft exteriors with four different thicknesses (1.0, 2.5, 4.0 and 5.0 mm), and these were analyzed for their bending, compressive and tensile properties. The cylindrical models were created using Fusion 360 of 3D modeling program with specific dimensions and then sliced with set 3D printing conditions. The study found that printing time and weight increased proportionally with thickness, and the mechanical properties varied accordingly. Cyl1.0 of 1.0 mm thickness exhibited hard and tough characteristics due to its lack of infill, while Cyl5.0 of 5.0 mm thickness demonstrated excellent bending, tensile, and compressive properties, making it the most suitable for manufacturing. Other thicknesses, except for Cyl1.0, were also deemed appropriate for exterior materials of humanoid robot arm, depending on specific requirements such as lightweight and rigidity. Future research will investigate the application of these materials to other parts of humanoid robots.
알킨 말단기를 가진 나선형 폴리이소시아니드의 합성과 MALDI-TOF를 이용한 분석
조민수  조준희  고준영  곽영제
Block copolymers (BCPs) with rigid structures, such as helical polymers, pose synthetic challenges using traditional polymerization methods. This study presents an approach to synthesizing polyisocyanides (PIs) with alkyne end groups, facilitating the creation of BCPs through click chemistry. An aryl nickel complex, modified with a trimethylsilyl-protected alkyne group, was employed as a polymerization catalyst for 4-methoxy isocyanide. The polymerization exhibited high efficiency, producing PIs with controlled molecular weight and narrow molecular weight distribution. Post-polymerization deprotection reaction yielded alkyne-terminated PIs, enabling the formation of BCPs through copper-catalyzed azide-alkyne cycloaddition click reactions with (R)-3-azido-1-phenylpropal-1-ol and azide-functionalized poly(ethylene oxide), successfully forming PI-c-PP and PEO-b-PI block copolymers. Characterization using NMR spectroscopy and MALDI-TOF MS confirmed the successful incorporation and subsequent deprotection of the alkyne groups. This approach provides a versatile route to synthesize end-functionalized helical polymers, enabling the creation of helical-coil block copolymers with potential applications in nanostructure formation.
Ag 도핑 TiO2와 실란 고분자를 이용한 셀프클리닝 섬유의 제조
곽정미  문예진  박강림  박민지  박현규  배진석
In this study, visible light responded photo catalysts and silane polymers were applied to PET fabrics to occur photoreaction and super hydrophobic property. First, TiO2 doped with Ag metal ions was prepared, and the Ag-doped TiO2 was combined with AgI, WO3, and ZnO photocatalysts. Because photodegradation properties are improved by complexing photocatalysts. And they were treated on PET fabrics to occur a self-cleaning function. Ag ions reduce the bandgap energy of TiO2 so that it exhibits excellent photodegradation under visible light. In addition, WO3, ZnO, and AgI have improved electron mobility through synergy with Ag ions present in the metal-doped photocatalyst. In addition, by applying a silane polymer to PET fabrics, super hydrophobic properties are realized on the surface of fiber. SEM, EDS, and XRD were used to evaluate the properties and performance of the visible light responsive photocatalysts. Contact angles were measured to evaluate the properties of the silane-treated fabric surface. As a result, PET fabric realizes excellent initial hotodecomposition rate that decompose more than 90% of Methylene blue in 4 hours, and super hydrophobic property of contact angle 165 °. If there are further studies, the possibility of self-cleaning functional fibers will be high.
폴리카프로락톤 기반 초분자형 고분자를 이용한 가소화 폴리염화비닐클로라이드(Poly(vinyl chloride))의 제조 및 특성분석
유영준  김희정  정재우
The ureidopyrimidinone-end functional polycaprolactone with the quadruple hydrogen bonding (UPCL) was synthesized and investigated its plasticizing effect on rigid poly(vinyl chloride) (PVC). The successful polymerization of UPCL was confirmed by nuclear magnetic resonance (NMR) and fourier-transform infrared (FT-IR) spectroscopy. Differential Scanning Calorimetry (DSC) and Dynamic Mechanical Analysis (DMA) showed that UPCL was miscible with PVC at a molecular level. By controlling the mixing amount of UPCL and PVC, the glass transition temperature (Tg) of PVC was able to be controlled from 79 oC to -13 oC, indicating that the rigid PVC was plasticized and became soft. In addition, the results of the tensile test using a universal testing machine (UTM) showed that while PVC had 57% of strain, the plasticized PVC mixed with 50 phr of UPCL showed 342.6% of strain, which was more than 6 times higher than that of PVC. These findings clearly revealed that the incorporation of UPCL can effectively soften and plasticize rigid PVC, presenting a viable approach for the development of flexible PVC materials.
비올로겐을 포함하는 신축성 고분자 합성과 유연한 전기변색소자 제조 연
최재원  엄수연  박종승
Electrochromism is a phenomenon in which materials change color reversibly through electrochemical oxidation and reduction reactions when an external voltage is applied. Viologens are commonly used as organic electrochromic materials in all-in-one ion gel compositions due to their electron-accepting ability and versatile synthesis routes. However, their integration into polymers for ion gel preparation is not well-reported. With growing interest in wearable devices, significant efforts have been made to develop advanced electrochromic materials for flexible electrochromic devices (ECDs). In this study, we synthesized a viologen-incorporated stretchable polymer and applied it to ECD fabrication on an ITO-PET substrate. The prepared flexible ECDs operated at a voltage of -2.5 V, exhibiting a high optical contrast of 83.9% at 600 nm, a coloration efficiency of 82.8 cm²/C, long-term switching stability up to 9000 s, and switching times under 20 s. Additionally, these viologen-incorporated polymer ECDs demonstrate durability when bent, proving their suitability for upcoming technologies like smart displays and wearable gadgets.