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 fiber 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. 4, Apr. 2024)
Exploring the Role of Ag Nanoparticle Distribution in Novel pH-Sensitive Nanofibers Containing Hyaluronic Acid for Enhanced Wound Healing with Sustained Curcumin Release
Zahra Sayyar Mahsa Khadem Sadigh
The use of nanofiber patches has received considerable attention as a promising solution for overcoming challenges in drug delivery. In this study, silver nanoparticles (Ag NPs) were incorporated in chitosan (CS), hyaluronic acid (HYA), and polyvinyl alcohol (PVA) to form nanofibers (namely, the CS/HYA/PVA-Ag nanofiber) for the controllable release of curcumin (CUR). The CUR release from the CS/HYA/PVA-Ag nanofibers consistently happened sustainably. Therefore, the prepared CS/HYA/PVA-Ag nanofibers show great promise in terms of their ability to expand the field of pH-dependent transdermal drug delivery (TDD) and sustainably release drugs. Additionally, the scratch assay results of these nanofibers further support their potential applications in wound healing.
Electrospun Nano-boron–Ammonium Dinitramide Core–sheath Nanofibers
Hao Peng Xiaolan Song Dan Song Yi Wang Chongwei An Chunwang Luo
The nano-boron powder (n-B) exhibits remarkable efficacy as a combustion catalyst, making it a prime candidate for use in solid propellant metal burners. Nevertheless, throughout the storage phase, the surface of n-B powder is prone to oxidation and substantial agglomeration, resulting in challenges with ignition and incomplete energy dissipation when utilizing boron powder. The synthesis of nano-boron/nitrocellulose/ammonium dinitramide@fluorine rubber (n-B/NC/ADN@F2602) is accomplished via the coaxial electrospinning technique, with n-B uniformly dispersed within the core-shell fiber. The n-B is evenly distributed within the core-shell fiber, and as a result of F2602 encapsulation, the moisture absorption of n-B/NC/ADN@F2602 has decreased from 191.6 to 10.1%. In the course of combustion, the fibrous composite of n-B/NC/ADN@F2602 undergoes an escalation in the rates of energy output and energy release, owing to the constraints imposed by external F2602. The n-B/NC/ADN@F2602 demonstrates a 1.3-fold rise in peak pressure and a 1.15-fold increase in maximum pressure rise rate compared to n-B/NC/ADN. Furthermore, the maximum flame temperature is elevated by 150.5 ℃, and the combustion heat is augmented by approximately 8.7%. The findings of the energy performance assessment reveal that the mean molecular weight (MC) of the combustion byproduct of n-B/NC/ADN@F2602 stands at 27.6 g·mol-1, markedly surpassing that of n-B/NC/ADN. The aforementioned findings exemplify that coaxial electrospinning is an exceedingly efficacious technique for enhancing nanostructures, thereby amplifying the reactivity of energetic particles and offering novel insights into their application in energetic materials.
Gold Nanoparticles-Incorporated Electrospun Nanofibrous Membrane for Optical Biosensing Applications: An Experimental and Computational Approach
A. S. Sujitha R. Saikant Lakshminarayanan Ragupathy I. Hubert Joe Diksha Painuly
Paper-based biosensing platforms are the leading area of research today. In this work, a platform for biosensing applications with improved detection capability has been prepared using gold nanoparticles (AuNPs) incorporated in electrospun nanofibers. The computational study results demonstrated that the addition of AuNPs brings about better stability to the polymer complex, and the energy band gap was found to be lowered for the PVA-AuNPs (Eg = 3.57 eV) compared to PVA (Eg = 8.82 eV). Based on this data, AuNPs were incorporated into the polymer matrix by immersion and dispersion techniques. Different ratios of polyvinyl alcohol (PVA) to AuNPs have been prepared, and the optical, thermal, morphological, and structural properties of the substrates were evaluated to prepare a matrix with better biosensing capabilities. Improved photoluminescence emission intensity of the order of 2.5 times higher was observed for PVA-AuNPs (7:3) nanofibers compared to bare PVA nanofibers. The improved photoluminescence emission intensity of the polymer matrix can be used as a quantitative parameter for the diagnosis of several diseases. The field emission scanning electron microscopy (FESEM) and high-resolution transmission electron microscopy (HRTEM) analysis shows the successful encapsulation of AuNPs within the nanofibers with an average fiber diameter of 101 ± 21 nm and particle size of around 4.24 nm of Au NPs. The prepared PVA-AuNPs nanofibers showed stable luminescence properties (less than 10% variation) even after two months of storage at room temperature. The bioconjugation studies showed better photoluminescence emission intensity for the proposed substrate than the conventional nitrocellulose (NC) membrane. The functional performance of the modified NC membrane with electrospun nanofibers showed a three times higher response than the bare NC membrane. The present study may give new insight to use the gold-incorporated nanofibers as an additive element to the conventional NC membrane in order to bring out better bioconjugation competency with improved sensing properties
Three-Dimensional Polyacrylonitrile Nanofibrous Sponge with In Situ Grown ZIF-67 for Activating Peroxymonosulfate to Degrade Organic Contaminants
Shijie Lou Qiqi Weng Xinyi Li Shiqi Ding Xinhan Miao Yifan Wu Guojun Jiang Xiangyu Ye
Metal-organic frameworks (MOFs)-based advanced oxidation processes show great potential in wastewater treatment, while large-scale application is limited by their particle agglomeration and poor recyclability. Herein, a novel three-dimensional (3D) ZIF-67/PAN nanofibrous sponge (ZIF-67/PAN NFS) was successfully fabricated by a convenient method based on a combination of liquid-assisted collection electrospinning, in situ growth and freeze-drying. It was an efficient catalyst for the activation of peroxymonosulfate (PMS). The obtained ZIF-67/PAN NFS exhibited excellent catalytic performance toward the degradation of methylene blue (MB) (99.25% within 30 min). Several influencing factors, such as PMS concentration, temperature, initial pH, and initial MB concentration, were systematically investigated for the degradation of MB. Moreover, the radical quenching experiments proved that SO4- was the predominant reactive species instead of ·OH for the degradation of MB. Besides, the ZIF-67/PAN NFS showed excellent reusability and the degradation efficiency remained above 94.36% after five consecutive cycles. This strategy is feasible for the fabrication of novel and efficient catalysts for remediation of organic wastewaters.
Performance Evaluation of Carbonized Vermiculite–Polycarbonate Nanofibrous Adsorbent for Congo Red Removal
Sohrab Ali Ghorbanian Samaneh Bagheri Renani Hooman Fatoorehchi Fateme Molajafari Payam Zahedi
Today, the removal of dyes as one of the most important pollutants in water resources using polymeric nanofibers and silicate-based materials has received a great deal of attention owing to their high specific surface area and active surface, respectively. This study aims to develop a polycarbonate (PC) nanofibrous adsorbent modified with 10 (%w/v) of carbonized vermiculite (CVMT) for elimination of Congo red (CR) from aqueous solutions. The field-emission scanning electron microscopy results show the electrospun nanofibrous sample with an average diameter of 235.8 nm. Prior to CVMT incorporation into PC nanofibers, the specific surface area of the sample is 6.4 m2/g and this value shows a slight increase up to 8.5 m2/g after the addition of CVMT. By adjusting the operational parameters such as pH of 3, adsorbent amount of 0.08 g, and CR initial concentration of 100 ppm, the adsorption capacity is about 42 mg/g. In the following, the pseudo-first-order kinetic equation besides the Freundlich model confirms that the adsorption process of CR is controlled by physisorption onto the heterogeneous surface of the nanofibrous adsorbent. Eventually, thermodynamic studies reveal the enthalpy of 14.92 kJ/mol and entropy of 0.055 kJ/mol, thereby suggesting endothermic and random adsorption process.
A New Lotus-Leaf-Inspired Beaded Nanofiber Strategy for the Development of Cryogel/Nanofiber Hybrid Structures
Dilayda Kanmaz Bilgen Osman Esra Karaca
In this study, a cryogel/nanofiber hybrid material was developed using a new lotus-leaf-inspired strategy. The lotus effect was generated via beaded poly(ε-caprolactone) (PCL) nanofibers produced from the 9 wt% PCL solution with low viscosity and high surface tension via electrospinning. A poly(hydroxyethyl methacrylate) (PHEMA) cryogel layer was constructed through polymerization onto the beaded PCL nanofibrous mat. The thickness of the PHEMA cryogel/beaded PCL nanofiber hybrid material was 3.19 ± 0.07 mm. Morphological characterization studies of the hybrid material were conducted by scanning electron microscopy (SEM). The mean diameter of the beaded PCL nanofibers was 97.22 ± 21.18 nm. The lotus effect created by the beaded PCL nanofibers was investigated by water contact angle (WCA) measurements. The WCA of beadless and beaded PCL nanofibers was 93.42° ± 1.4° and 117.97° ± 5.04°, respectively. The PHEMA cryogel layer was chemically characterized via Fourier transform infrared spectroscopy (FTIR) analysis and the specific groups belonging to 2-hydroxyethyl methacrylate (HEMA) was observed. The porosity of the PHEMA cryogel layer was determined via mercury porosimetry. The total porosity of the PHEMA cryogel was 64.42%, and the pore sizes were in the range of 5–200 µm. Swelling kinetics of the PHEMA cryogel/beaded PCL nanofiber hybrid material were also investigated and compared to those of PHEMA cryogel and beaded PCL nanofibers. The maximum swelling ratio of the hybrid material was 509.69% and reached after 180 min. The developed PHEMA cryogel/beaded PCL nanofiber hybrid material met the criteria required for layered structures and biomedical applications whereby its eligible stability, morphology, porosity, and swelling capacity. Consequently, the lotus-leaf-inspired strategy was successful in constructing the cryogel/nanofiber hybrid materials.
Nature-Inspired Fluorine-Free Robust Superhydrophobic Fabrics
Jiating Wen Peilan Li Fanglong Zhu
The practical implementation of superhydrophobic surfaces in oil–water separation, antifouling, and self-cleaning has been severely hampered by the incorporation of hazardous components and their limited durability. In this study, a straightforward immersion process was employed to incorporate different-sized ZnO particles onto a nonwoven substrate, resulting in the creation of a multi-layered nano-rough structure. Subsequently, polydimethylsiloxane was utilized for hydrophobic modification, aiming to decrease the free energy of the fabric surface and establish a durable covalent bond between the coating and the fabric through a cross-linking reaction during the curing process. Ultimately, the successful fabrication of superhydrophobic textiles with exceptional robustness was achieved. The prepared fabrics exhibited a static water contact angle of 163.9°. Besides, a considerable mechanical stability to withstand 80 sandpaper abrasion cycles, and chemical resistance with sustained superhydrophobic property in various harsh environments (e.g., strong acid/base solutions, and various organic solvents), were presented. Furthermore, the fabricated fabric demonstrated a separation efficiency exceeding 90% and a contact angle greater than 150° even after 50 cycles when utilized as a filter for oil–water separation. This remarkable performance can be attributed to its exceptional stain resistance and self-cleaning property.
A Controllable and Effective Method to Prepare Nano-LnMOFs Film on Silk Fabric and Extend the Temperature-Sensing Range
Xingfang Xiao Lipei Ren Ruina Liu Zheng Li Chenggen Zhang Yanhong Lu Shujun Wang Weilin Xu
Preparation stable and continuous lanthanide metal–organic frameworks (Ln-MOFs) crystalline film coated on flexible substrate is a challenge for application. Herein a kind of novel nanoscale Eu-MOFs film on silk fabric for temperature sensing was successfully prepared. The silk fabric was coated with titanium dioxide (TiO2) via different atomic layer deposition (ALD) cycles, and then the Eu-MOFs can grow to nanoscale continuous film on the substrate. The composite was characterized by SEM, TEM, XPS, TG and PL. Fluorescence detection of temperature was also studied, and in a wide temperature range (77 K to 423 K), the fluorescence detection was sensitive and fitted to linear equation. In addition, the functional silk fabric exhibited different fluorescence detection behavior to temperature at different pH preparation conditions. At neutral preparation conditions, the fluorescence color of the functional silk fabric was dark yellow. The silk fabric exhibited rapid response in detection of temperature. At acidic preparation conditions, the fluorescence color was bright yellow, but it did not have detection effect. At alkaline preparation conditions, blue purple fluorescence was presented, and the temperature detection was also sensitive and fast. It is an effective method to obtain Ln-MOFs flexible film materials, and apply in the field of intelligent detection and wearing.
Acetylation of Kapok Fibres as an Oil Absorbent for Oil Spill Mitigation
Ke Wei Law Yong Hui Tan John Beardall Michelle Oi Yoon Soo
Oil spills are significant environmental events that can harm marine life and human health globally. Booms, skimmers, dispersants and burning have drawbacks such as instability in strong currents and high costs, and can themselves cause environmental damage. Bioremediation using oil-degrading bacteria has been widely used but faces the risk of the bacteria being washed away under strong winds and currents, thus lowering their effectiveness. To enhance oil degradation effectiveness, immobilisation is commonly used to attach bacteria onto carriers which thereby act as a shield for the bacteria under harsh conditions. In this study, kapok fibre was used as an oil sorbent and carrier for bacterial immobilisation of Acinetobacter venetianus RAG-1. Kapok fibres were chosen due to their hollow lumen and waxy layer, which can be altered through acetylation to increase their hydrophobicity for potentially improved oil absorption and bacterial immobilisation. The highest degree of substitution achieved was 2.06 ± 0.05 using acetic anhydride with 0.2% sulphuric acid at 90 °C for an hour. The results showed that acetylated kapok fibres had a lower oil absorption capacity but higher reabsorption ratio than raw kapok fibres, which leads to better reusability. Scanning electron microscopy and viable cell counts showed that the bacteria were successfully immobilised onto kapok fibres. The number of bacteria immobilised showed no significant difference between acetylated and raw kapok fibres despite acetylated fibres having a rougher surface. Bacteria-immobilised acetylated fibres are effective as a reusable oil sorbent for their greater reabsorption ratio and likely to degrade oil simultaneously.
Specific Fabric Properties Elicit Characteristic Neuro and Electrophysiological Responses
Mahendran Balasubramanian Thamizhisai Periyaswamy
Tactile perception of fabrics is a complex process challenging to parse and understand. Most studies examined fabric tactile perception through subjective means. Alternatively, neural and electrodermal signals can be used to examine fabric properties that elicit responses via tactile stimulation. Among the fabric properties, some may generate strong responses while others produce weaker responses. Here, we have shown that by studying the electroencephalography signal from the scalp areas corresponding to the sensory cortex, and the galvanic skin responses that occurred during active tactile sensation of varied fabrics, the influence of individual fabric properties can be determined. Eight subjective properties, from twenty female subjects, and seventeen objective properties, measured using Kawabata Evaluation System, were independently correlated to the biosignals. We have shown that properties related to thickness and volume were the most influential, followed by surface frictional properties. Fuzziness and linearity of compression were the least influencing properties affecting the biosignals.