pISSN : 1229-9197 / eISSN : 1875-0052
Fibers and Polymers, the journal of the Korean Fiber Society, provides you with state-of-the-art
research in fibers and polymer science and technology related to developments in the textile
industry. Bridging the gap between fiber science and polymer science, the journal’s topics
include fiber structure and property, dyeing and finishing, textile processing, and apparel science.
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Latest Publication (Vol. 25, No. 7, Jul. 2024)
Preparation and Application of Polyvinyl Alcohol/Chitosan Quaternary Ammonium Salt/Polyacrylamide-Based Double Network Hydrogel
Juan Lei Kunlin Chen Yu Chen Hua Qiu
Most functional hydrogels have biocompatibility problems in the pursuit of high performance, and there is an urgent need to study the problem of maintaining good biocompatibility and making hydrogels both multifunctional. Here, this paper proposes polyvinyl alcohol (PVA), chitosan quaternary ammonium salt (HACC) and polyacrylamide (PAM) with good biocompatibility as hydrogel substrates and nano-ferric copper-zinc oxide (nFCZ) as the main antimicrobial source. The physicochemical double crosslinked network hydrogels were prepared using one-pot method. Finally, the conductive properties of the hydrogel were enhanced by soaking in CaCl2 solution, and the PHP dual-network conductive antimicrobial composite hydrogel was prepared. The hydrogel was characterised, tested and analysed through various tests. The results showed that the obtained dual-network composite hydrogels had good mechanical properties, stable sensing properties, excellent swelling rate, biocompatibility and antimicrobial activity, and the bacterial inhibition rate against Escherichia coli and Staphylococcus aureus was higher than 99%. The stable electrical conductivity and sensing properties promote cell regeneration at the wound site, which broadens the scope of hydrogel applications in biomedical fields.
High-Strength and High-Conductivity Core-Sheath Hydrogel Long Fibers for Stretchable Ionic Strain Sensors
Hengyi Lou Yu Wang Hui Wu Shengchao Ruan Junmin Wan Xiong Pu
Hydrogel fibers that can be raided possess considerable promise in the realm of flexible electronic gadgets, as they exhibit both exceptional durability and excellent conductivity. Using a continuous coaxial wet-spinning method, we have created a hydrogel long fiber with a core-sheath structure that is both strong, conductive, frost-resistant, and braidable. Hydroxymethylpropyl cellulose (HPMC) added lowconcentration polyvinyl alcohol (PVA) toform the core layer of the fiber he sheaths made of highconcentration PVA. Next, the fibers are submerged in a sodium chloride solution to create PVA@PVA-HPMC hydrogel fibers that exhibit remarkable tensile strength (6.7 MPa), extensive elongation (450%), excellent electrical conductivity (9.23 S/m), and exceptional resistance to freezing temperatures (below -20 °C). The hydrogel fibers are further encapsulated using PSPI copolymers to enhance their environmental stability. Finally, the PVA@PVA-HPMC fibers are applied as flexible sensors to detect human joint movements, and assembled into e-textiles to monitor the positional distribution of pressure.
Effects of Aromatic Linker Structures on Carbon Dioxide Adsorption and Conversion Performance in Melamine-Based Porous Organic Polymers
Yijin Choi Hyunwoo Byun Yonggyun Cho Keechul Youm Nazrul Hsan Santosh Kumar Joonseok Koh
The climate change is accelerating with the increase in the concentration of carbon dioxide (CO2) in the atmosphere. CO2 capture and conversion are effective strategies for stabilizing such environmental conditions. In this study, a series of melamine-based porous organic polymers (POPs), each incorporating different aromatic aldehydes as linkers, were synthesized. The POPs (MPOP-6C, MPOP-6N, MPOP-5N, and MPOP-5O) were characterized by Fourier-transform infrared spectroscopy, solid-state 13C nuclear magnetic resonance, X-ray diffraction, thermogravimetric analysis, and high-resolution field-emission scanning electron microscopy. The gas adsorption characteristics, including adsorption–desorption isotherms, pore size distribution, and adsorption at 298 and 323 K, were assessed through a Brunauer–Emmett–Teller analysis. The cycloaddition of CO2 with styrene oxide was performed using POPs as catalysts for conversion to styrene carbonate. Melamine-based POPs bearing heterocycles with high π-electron densities exhibited enhanced CO2 selectivity performances. MPOP-6N, which incorporated a pyridine motif, exhibited a notable enhancement in the conversion rate among the synthesized catalysts.
Preparation and Properties of Dye-Sensitizing Graphene/TiO2 based Photocatalytic Composite Film by Electrospray Method
Keyu Li Miaoqing Liang Mei Zhang Jinmei Nie Lihong Bao
In this study, a dye-sensitizing graphene/TiO2(DTG) based photocatalytic composite film (TPU-DTG) was developed to address the challenging recovery of graphene photocatalyst powder from treated sewage. The composite film was created by incorporating self-made dye-sensitizing graphene/TiO2 onto an electrospun polyurethane film using electrostatic spraying technology. The structure and morphology of the composite film were analyzed using Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), and X-ray diffraction (XRD). Additionally, the tensile properties and thermal stability of the composite film were examined. X-ray diffraction (XRD) analysis indicated the presence of the diffraction peak of the DTG 101 crystal plane. SEM observation of TPU-4%DTG showed that the photocatalytic nanoparticles were evenly dispersed on the fiber membrane without visible agglomeration. TPU-4%DTG presented a maximum fracture stress of 17.2128 N and an elongation at a break of 335.43%. The photocatalytic performance study revealed that TPU-4%DTG was capable of eliminating over 99% of methylene blue (MB) within 10 h, and even after five cycles of photocatalytic experiments, the removal rate of MB remained above 90%.
Tailoring of Gelatin-Chitosan Nanofibers Functionalized with Eucalyptus Essential Oil via Electroblowing for Potential Food Packaging and Wound Dressing Applications
Zeyne Elomar Andinet Kumella Eticha Nurcan Doğan Yasin Akgul Cemhan Doğan
In recent years, new approaches to fabricating nanofiber networks for potential applications in wound dressing and food packaging have been in the spotlight. This study aimed to produce functional webs based on gelatin, chitosan, and eucalyptus essential oil using the electro-blowing method instead of traditional spinning methods such as electrospinning. The resultant nanofiber webs exhibit promising morphological characteristics, including reduced fiber diameters, enhanced air permeability, and improved thermal stability. The integration of chitosan and eucalyptus essential oil overcomes limitations associated with gelatin, offering enhanced mechanical properties, antibacterial efficacy, and potential attributes for wound healing and food packaging. The combination of gelatin and chitosan contributes to biodegradability and biocompatibility, crucial for developing materials compatible with the natural environment. The addition of eucalyptus essential oil provides an additional layer of antimicrobial protection, aligning with sustainability goals in wound care and active food packaging. A comprehensive analysis encompassing SEM morphologies, fiber diameters, air permeability, FTIR spectra, TGA thermograms, and contact angle measurements establishes a thorough understanding of the fabricated nanofiber webs’ characteristics. Despite the favorable properties exhibited by the developed nanofiber webs for wound healing and food packaging applications, the incorporation of eucalyptus essential oil resulted in a reduction in tensile strength and elongation ratios. This observation highlights the necessity for further optimization and fine-tuning of the formulation to strike a balance between antimicrobial benefits and mechanical properties. Distinguished by its unique combination of gelatin, chitosan, and eucalyptus essential oil, this research contributes to the advancement of nanofiber technology, expanding knowledge in the field and paving the way for the development of advanced materials with enhanced therapeutic properties for wound healing and food packaging.
Uridine-Loaded Polycaprolactone Nanofiber Mats as a Novel Wound Dressing
Hilmiye Sule Mergen Sebnem Duzyer Gebizli Erkan Ermis Mehmet Cansev Sema Isik Dokuzoglu Gokhan Goktalay
In the current study, a novel wound dressing material for an effective wound healing was developed by loading Uridine (URD), an endogenous compound known for its regenerative properties, into polycaprolactone (PCL) nanofibers. Initially, PCL nanofibers without URD were fabricated from different PCL solutions (7, 8, 10 and 11% w/w) by electrospinning and optimum PCL concentration (10% w/w) for URD loading was determined. After loading URD at different concentrations (0.1, 0.5 and 1% w/w) into 10% PCL solution, PCL/URD nanofibers were electrospun. Structural characteristics, release kinetics as well as in vitro and in vivo effects of the PCL/URD nanofibers were studied and in vivo effects were compared with a conventional wound dressing material. Loading URD increased nanofiber diameters from 248 to 509 nm and decreased contact angles from 123.76° to 94.3° with increasing URD concentrations. URD showed a burst release in the first 60 min following a more gradual release up to the 5th day which best fitted with Korsmeyer–Peppas model. PCL/URD mats provided enhanced viability in vitro in MTT assay using mouse L929 fibroblast cell line. Furthermore, in vivo wound closure studies revealed an immediate and robust wound healing in rats treated with PCL/URD mats compared to PCL mats without URD as well as the conventional wound dressing material. These data suggest that URD-loaded PCL nanofiber mats are promising materials as wound dressing.
Wearable Colorful Nanofiber of Thermoplastic Polyurethane (TPU) Mechanical and Colorfastness Properties by Dope Dyeing
Nahida Akter Nitu Yingyuan Ma Yingzhen Gong Di Zhang Shangkun Zhang Mohammad Mehedi Hasan Yi Hu
Colorful nanofiber membranes applied to wearable textiles and products with the direct waterless dope dyeing method are gaining a lot of interest in the research area. However, the challenge remains to produce it with a less chemical and easier process. The study analyzed the mechanical strength and colorimetric properties of thermoplastic polyurethane (TPU) colorful nanofibers by varying the electrospinning machine parameters and variables. TPU and dye content were implemented within the specified range of 0.015–0.035 wt% and 0.0015–0.0045 wt% accordingly. The electrospinning parameters were varied at the distance of 5–20 cm, the fiber collection drum was fixed at 250 RPM, the feed rate was constant at 1–2 mL/h, and the applied voltage was not fixed; it was adjusted by understanding the solution viscosity, temperature, and humidity. The voltage range was 12–22 kV. The TPU 0.25 wt% sample showed smooth and less bead morphology and the colorfastness to wash, rub, perspiration, light, and laundry result showed excellence for most of the samples, and the mechanical strength was up to 9.8 MPa, which was acceptable for commercial decorative applications compared to pure TPU. Two printing techniques were utilized: pigment print, which is a flat-screen 1D print, and high-density pigment print, which is a kind of 3D printing. It will enhance the aesthetic appearance of the membrane. This printed membrane was stitched into t-shirts and fashion accessories. The first aim was to make colorful nanofiber using the dope dyeing method in an electrospinning machine; the second purpose was to apply 1D and 3D printing to the colorful nanofiber membrane; and the third objective was to sew the printed colorful nanofiber into commercial apparel and accessories for the common consumer. This work may open a new path for nanofiber colorful dyeing with low cost and energy resources, and it may promote waterless dyeing for wearable printed textiles, decorative products, and accessories.
Preparation of Molecularly Imprinted Bacterial Cellulose Nanofiber Nonwovens for Selectively Removing Dye Molecule from Aqueous Solution
Cai Zhijiang Kang Xiaorui Zhu Cong Xiong Pin
In this study, a novel surface dye molecularly imprinted bacterial cellulose nanofiber nonwoven (DMIBC) has been successfully prepared using two-step process by surface molecule-imprinting method combined with electrospinning technique to improve the selective adsorption capacity using methylene blue (MB) dye molecule as the target pollutant. Scanning electron microscopy, surface area and Fourier transform infrared spectroscopy were used to characterize with the physico-chemical characteristics of the prepared DMIBC. The as-prepared DMIBC nanofiber nonwoven has small average nanofiber diameter of 172.6 ± 17 nm with large specific surface area of 233.64 ± 22.6 m2/g, which are favorable for adsorption. To systematically investigate the adsorption performances such as adsorption capacity and selectivity coefficient of the prepared DMIBC-MB nano-adsorbent for MB dye molecules, the effect of solution pH value, initial dye molecule concentrations, adsorption time, solution temperature and competitive dye molecules has been studied. The maximum adsorption capacity of 4250 mg/g can be reached at pH value of 6.0. The calculated adsorption selectivity coefficients and molecule imprinting factors suggest that DMIBC-MB nano-adsorbent possesses excellent adsorption selectivity for imprinted MB dye molecule. The dye adsorption isotherm models and kinetics models were also applied to analyze the adsorption mechanism of DMIBC nano-adsorbent for MB dye molecules. Durability test indicated that the adsorption capacity of DMIBC nano-adsorbent could remain 92.1% of the initial adsorption capacity after 10 consecutive regeneration cycles. In general, the DMIBC nano-adsorbent with highly selective removal of MB dye molecules could be applied for dye wastewater treatment.
Study on Physical, Mechanical, Morphological, and Crystallographic Properties of Chemically Treated Sisal Fibers
Subham Jena Vishwas Nandkishor Khatri Lohitkumar Nainegali Rakesh Kumar Dutta
This research is focused on the physical, mechanical, morphological, elemental, and crystallographic properties of untreated, chemically treated, and emulsion-coated sisal fibers. Physical properties, such as diameter and water absorption, were investigated, while mechanical properties, including tensile strength, elongation at break, and modulus of elasticity, were assessed. The findings indicate a significant enhancement in tensile strength (up to 96.7%) and elastic modulus values (up to 214.43%) after chemical treatment, accompanied by a decrease in elongation at break (up to 56.8%). Interestingly, emulsion coating reduced the tensile strength and elastic modulus values, with a marginal increase in elongation at break for treated fibers. The fibers subjected to benzoylation exhibited the highest tensile strength and elastic modulus, followed by alkali-treated fibers. This trend was consistent for emulsion-coated fibers as well. The study outcomes were substantiated by examining the morphological, elemental, and crystallographic aspects of untreated and treated/coated fibers, indicating their suitability for diverse engineering applications.
Bacterial Cellulose for Improving Wrinkle Resistance of Cotton Fabric
Niloofar Rafizadeh Zaeem Ramin Khajavi Ali Ganji Jameh Shuran Amin Meftahi Elahe Abed
Cotton fabric, which is a natural cellulosic material, has many advantages. However, it is prone to wrinkling easily. On the other hand, Bacterial cellulose (BC) is a synthetic form of cellulose with unique structural and morphological features, making it suitable for use in various industries and many applications. This study aimed to investigate the potential of developing a bacterial cellulose coating to improve the crease resistance of cotton fabric. Firstly, Acetobacter synthesized BC, dissolved in 4-methyl morpholine-4-oxide, and sprayed on cotton fabric samples. After the coated samples were dried and washed, the bacterial cellulose dissolved in the coating solution solidified and filled the gaps and spaces between the yarn and fibers. The morphology of coated samples showed the presence of a coated layer on cotton fibers and between them. Results also showed that the moisture regain of coated and uncoated samples was not significantly different. However, the coated samples exhibited better breaking strength, holding, and wrinkling resistance, while their wicking ability, water absorption, and breaking elongation decreased as expected. It was concluded that the new approach could potentially improve the physical properties of cellulosic materials, particularly in enhancing the crease resistance of cotton fabric.