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.
Copyright by the Korean Fiber Society. All rights reserved. Reproduction in whole or in part in any form without permission in writing from the Korean Fiber Society is strictly prohibited.
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.
Copyright by the Korean Fiber Society. All rights reserved. Reproduction in whole or in part in any form without permission in writing from the Korean Fiber Society is strictly prohibited.
Latest Publication (Vol. 62, No. 4, Aug. 2025)
Cellulose-Lignin Based Plasticizing Methods for Eco-friendly Plastics
권제훈 황동기 유경철 이가희 구준모 이승구
Cellulose and lignin are abundant biomass resources, but their low processability and flexibility limit their use as thermoplastic materials. This review aims to address these challenges by examining the structural characteristics of cellulose and lignin and exploring various chemical and physical plasticization strategies. For cellulose, chemical modifications such as acetylation, esterification, and carboxymethylation can reduce hydrogen bonding and enhance flexibility. Additionally, plasticizers like glycerol, ionic liquids (ILs), and deep eutectic solvents (DES) further improve chain mobility. In the case of lignin, strategies such as alkylation, acetylation, and copolymerization with polyesters or polyurethanes have been investigated to lower the glass transition temperature and achieve thermoplasticity. By combining cellulose and lignin, we can create functional composites that exhibit enhanced mechanical properties, thermal stability, and biodegradability, especially when employing compatibilizers to modify interfacial properties. Applications of these plasticized materials include thermoplastic starch (TPS) and poly(lactic acid) (PLA) composites, which show promising performance. However, commercialization still faces technical and economic challenges, such as raw material heterogeneity, the need for ecofriendly processing, property optimization, and cost reduction. Future directions include designing ionic polymers and multifunctional nanocomposites to enhance performance and scalability. Collectively, cellulose and lignin have great potential as sustainable thermoplastic alternatives.
Comparative Analysis of Knitting Structures and Plantar Pressure in Various Plantar Fasciitis Socks
마하붑 호세인 프린스 사디아 라흐만 토루 정임주 이선희
This study evaluated three types of plantar fasciitis socks (PFS), PFS01, PFS02, and PFS03, to identify optimal knit structures for support and pressure relief. Each sock was segmented into 12 to 13 anatomical regions and analyzed for knit type, thickness, and stitch
density. PFS03 featured the most complex design with a combination of plain, rib, and jacquard knits applied to multiple zones, particularly in the heel and ankle, to enhance zonal compression and joint stabilization. PFS01 had a simpler structure with moderate compression, while PFS02 applied targeted support using increased stitch density. Thickness measurements revealed design-specific cushioning, with PFS01 emphasizing the metatarsal region, PFS02 reinforcing the ankle area with its thickest section at reaching 3.07 mm,
and PFS03 focusing on heel protection with thickness values exceeding 2 mm. Plantar pressure analysis using a symptomatic subject confirmed that all socks reduced peak pressure compared to barefoot walking. PFS02 showed the most significant reduction in highstress
zones such as medial forefoot and heel, along with improved contact area and pressure distribution. These findings suggest that PFS02 offers the most effective knit configuration, providing enhanced compression, ankle stability, and pressure relief.
3D Printing Using κ-Carrageenan/Nanosilicates Hydrogels
장재원 한영배 강민관 나양호
In this study, the rheological properties, output characteristics, and mechanical properties of hydrogel mixed with κ-carrageenan and Laponite-XLS were quantitatively analyzed according to 3D printing process conditions. The 3D printing device was designed and manufactured as a pressure-type device with temperature control for stable transport and precise layering of hydrogel. The printing quality map was obtained according to printing conditions (nozzle temperature, pressure, nozzle movement speed, etc.) and it was confirmed that stable printing was possible under optimal printing conditions. The stability was confirmed through a tensile test on the joints between the printed fibers, and Dog-bone-shaped specimens were manufactured under printing direction (parallel, tilted) and infill density (30%, 50%) conditions and tensile tests were performed. As a result, the tensile strength tended to significantly increase as the printing direction was aligned with the tensile load and the infill density increased. As a result, it was confirmed that the κ-carrageenan/Laponite-XLS composite hydrogel has sufficient potential as materials that satisfies structural precision, rheological controllability, and mechanical stability when combined with 3D printing technology.
Analysis of Molecular Orientation and Mechanical Properties of PAN Precursors Depending on Drawing Stages and Jet Stretch Ratio in Wet-Spinning
조현재 유승민 김병석 정용식
To investigate the effect of drawing on polyacrylonitrile (PAN) precursors used for carbon fibers, a wet-spinning method was employed. The stepwise drawing process significantly improved fiber orientation and mechanical properties, progressively enhancing these characteristics from the jet-stretch stage to the post-drawing stage. After postdrawing, the PAN precursor exhibited a tensile strength of 4.82 g/den. Furthermore, varying the jet stretch ratios (0.3, 0.5, 0.7, and 0.9) led to an increased post-drawing ratio, further enhancing the orientation factor and mechanical properties. At the optimal jet stretch ratio of 0.9, the highest orientation factor and tensile strength were 0.853 and 6.01 g/den, respectively. After carbonizing the optimized PAN precursor at 1350 °C, the resulting carbon fiber exhibited a tensile strength of 3.39 GPa and a modulus of 352 GPa.
Eco-friendly Water-based Decolorization and PET Depolymerization for Effective Recycling of PET/Cotton Blend Fabric (I) - E-type Disperse Dyes and Bifunctional Reactive Dyes -
성준규 김성현 이원준 이정진
Decolorization of dyed PET/Cotton(P/C) blend fibers is a critical pre-treatment step that can significantly enhance the efficiency of chemical recycling of post-consumer PET/Cotton blend textiles. However, conventional dye extraction methods typically involve high-temperature treatment with organic solvents, which are costly and can generate toxic gases, leading to secondary environmental issues. In this study, we present a more environmentally benign decolorization method that substantially reduces the use of organic solvents. Decolorizing solutions were prepared with aqueous solution of sodium hydroxide and sodium hydrosulfite and adding acetone as an additive. Using this solution, P/C blend fabrics dyed with 3 disperse dyes and 3 reactive dyes were decolorized. Under optimized conditions, over 98.7% decolorization efficiency was achieved. When the decolorized P/C fabrics were subjected to a subsequent depolymerization, the cotton component could be separated and the PET component was depolymerized into terephthalic acid (TPA) monomer. The TPA yield from the decolorized P/C (77.5~80.5%) was significantly higher than that from the dyed P/C (55.1~68.5%). These results demonstrate that effective aqueous decolorization can substantially improve both the environmental and process efficiency of chemical recycling for dyed P/C blend fabric.
Eco-friendly Water-based Decolorization and PET Depolymerization for Effective Recycling of PET/Cotton Blend Fabric (II) - S-type Disperse Dyes and VS-type Reactive Dyes -
성준규 김성현 이원준 이정진
This study aimed to enhance the chemical recycling efficiency of P/C blended fabrics dyed with three S-type disperse dyes and three VS-type reactive dyes. An ecofriendly aqueous decolorization process, employing sodium hydroxide and sodium hydrosulfite with acetone as an additive, was applied to remove the dyes prior to depolymerization. Decolorization tests on fabrics dyed at various concentrations showed that, for orange and red samples, deep-shade fabrics retained some residual color after treatment; however, overall decolorization rates exceeded 96.7%. In contrast, blue samples exhibited lower decolorization rates of 88.7–90.9%, indicating inferior decolorization performance. Depolymerization converted the PET component into terephthalic acid (TPA) monomer, while cotton remained as a solid, enabling fiber separation. The TPA yield of the undyed control sample was 81.7%, but P/C fabrics dyed in medium or deep shades showed a marked decrease to 59.6–66.5%. When dyed samples were decolorized prior to depolymerization, however, yields increased to 77.5–82.7%. These findings demonstrate that the dye removal effectively mitigates the negative effects of dyeing on depolymerization efficiency. This combined decolorization–depolymerization process is expected to be applicable to the recycling of other PET-based composite materials.
Effect of Two-step UV-Crosslinking on the Crystallinity and Lithium-Ion Conductivity of PEO-Based Solid Electrolyte Film
류승진 김정환 이원호 장진호
Dual photo-crosslinking of PEO film was applied to enhance the ionic conductivity of the solid polymer electrolytes (SPEs) through the decreased crystallinity by the solution crosslinking and subsequent solid crosslinking. The UV irradiation energy, the concentration of photoinitiators and lithium salts were adjusted to optimize the SPE crosslinking. In particular, the PEO films containing LiPF6 or LiTFSI were cast via a solution process using acetonitrile as a solvent, both polymer films and polymer solutions were crosslinked under 365 nm LED-UV irradiation. The tensile toughness of the crosslinked SPE containing LiPF6 increased nearly seven folds from 0.5 GPa up to 3.4 GPa. Also XRD crystallinity of the dual-crosslinked SPE decreased from 71% up to 10% surprisingly. Maximum ionic conductivity of 1.1×10-3 mS/cm at 25 °C was obtained by dual crosslinking of SPE containing LiTFSI at an EO:Li ratio of 10:1. The SPEs also exhibited similar ionic conductivity to the gel polymer electrolyte containing 100 wt% liquid electrolyte. These findings support the dual-crosslinking as a viable route for the development of high-performance SPEs with superior mechanical strength.
Simulation-Driven Design and Optimization of Multilayer Acoustic Absorbers for EV Flat Floor Applications
정예담 조성진 김세종 이인성
This study aims to develop high-performance acoustic interior materials for flat floor structures in electric vehicles (EVs) by optimizing a multilayer sound-absorbing system composed of TPS composite, PET felt, and PU foam. To enable simulation-based acoustic prediction, fundamental material properties were first evaluated. The sound absorption coefficient was measured using the impedance tube method, while bulk density and open porosity were obtained via Phi-X analysis. These values were applied in FOAM-X to simulate single-layer absorption behavior and determine the optimal thickness for each material. Based on these results, NOVA software was used to predict the acoustic performance of multilayer structures. Among the design cases, the #2 configuration (TPS 2T / PET felt 10T/PU foam 20T) showed the most stable and efficient absorption in the midto-high frequency range. A prototype based on this configuration was fabricated, and its sound absorption was evaluated using an Alpha cabin test. The comparison showed that in the 400–4,000 Hz range, Alpha cabin measurements exhibited higher absorption coefficients than NOVA simulations, mainly due to micro-pore changes during forming and edge effects of the setup, while results above 4,000 Hz remained stable and demonstrated meaningful accuracy. This confirms the reliability of simulation-based acoustic design and demonstrates its applicability to eco-friendly EV interior components.