Fiber Morphology Research Articles

EMC1 Is Required for the Sarcoplasmic Reticulum and Mitochondrial Functions in the Drosophila Muscle

EMC1 is part of the endoplasmic reticulum (ER) membrane protein complex, whose functions include the insertion of transmembrane proteins into the ER membrane, ER–mitochondria contact, and lipid exchange. Here, we show that the Drosophila melanogaster EMC1 gene is expressed in the somatic musculature and the protein localizes to the sarcoplasmic reticulum (SR) network. Muscle-specific EMC1 RNAi led to severe motility defects and partial late pupae/early adulthood lethality, phenotypes that are rescued by co-expression with an EMC1 transgene. Motility impairment in EMC1-depleted flies was associated with aberrations in muscle morphology in embryos, larvae, and adults, including tortuous and misaligned fibers with reduced size and weakness. They were also associated with an altered SR network, cytosolic calcium overload, and mitochondrial dysfunction and dysmorphology that impaired membrane potential and oxidative phosphorylation capacity. Genes coding for ER stress sensors, mitochondrial biogenesis/dynamics, and other EMC components showed altered expression and were mostly rescued by the EMC1 transgene expression. In conclusion, EMC1 is required for the SR network’s mitochondrial integrity and influences underlying programs involved in the regulation of muscle mass and shape. We believe our data can contribute to the biology of human diseases caused by EMC1 mutations.

Preparation of Porous Si2N2O/SiC Ceramics by Microwave Sintering

Two steps strategy were taken to effectively produce porous Si2N2O/SiC ceramics: 1) direct foaming combined with sol‐gel curing at room temperature to form a green body, and 2) sintering assisted by in‐situ production of Si2N2O fibers under microwave sintering conditions. Non‐toxic silica sol was used to provide silicon source for in‐situ synthesis of Si2N2O, the silica sol could form a gel that stabilizes the bubbles, creating a porous structure. A thorough investigation was conducted into how different sintering temperatures affected the microstructure, flexural strength, and porosity of the porous Si2N2O/SiC composites. The main bonding phase in the porous composites was the Si2N2O with fiber morphology. The optimal microwave sintering temperature for fabricating porous Si2N2O/SiC ceramics, using a combination of sol‐gel and direct foaming techniques, has been determined to be 1200 °C. At this temperature, the porosity can be controlled between 73.32% and 83.16% by proportionally adjusting the ratio of the raw materials. Under the condition of high porosity, the thermal radiation is dominant and the thermal conductivity increases with the increase of temperature. With the decrease of porosity, the heat conduction is dominant, and the thermal conductivity decreases with the increase of temperature.

Interactions between geometrical forms and microstructural features in culm of square bamboo

Bamboo culms can alter the bamboo’s geometric shape by adjusting the hierarchical organization of anatomical components as a means of adapting to different living conditions. Therefore, a square-like culm has been found commonly in the Chimonobambusa bamboo species. However, the underling mechanism for how these anatomical components assemble into a square culm in the species remains to be considered. Furthermore, the relationship between the geometrical construction of culm and its corresponding organization of anatomical components within also needs clarification. Therefore, the geometrical construction of cross-sections was examined in this work. A super-ellipse based on the Lamé curve was confirmed. Additionally, the transitional zone, at 3/4 in the radial direction, was detected as an inflection point where the geometric parameters clearly changed. Meanwhile, anatomical observation also suggested that the transitional zone can be identified as an inflection point because the fibre morphology difference in circumferential regions becomes more apparent in this area. It is worth mentioning that there is a coherence between the geometrical and microstructural features in circumferential and radial variation. These findings are meaningful to manifest the controlling mechanism of hierarchical structures on the geometrical shape of bamboo culm.

Modification of bemban fiber (donax canniformis) with variations in NaOH concentration and soaking time

Abstract Modification and characterization of the physical, chemical and morphological properties of chemically engineered bemban fibers have been carried out with various NaOH concentrations and soaking times. The aim is to obtain the most optimal bemban fiber modification result so that they can be recommended as functional material reinforcement in composites. Fibers were modified by soaking for 1, 2 and 3 hours in NaOH solutions with concentrations of 2%, 3% and 4%; and also at 5% NaOH for 0.5 hours, 1 hour and 2 hours. The modification has reduced the lignin content and increased the cellulose fiber content. These results were confirmed by the results of the functional group spectrum using FTIR and fiber morphology using SEM. The physical properties of fiber such as water content, fiber diameter and porosity decreased while fiber density increased. The characteristics of the bemban fiber with modification in 5% NaOH solution for 2 hours have optimum values for the modifications carried out.

Effects of Supplementation with Essential Fatty Acids and Conjugated Linoleic Acids on Muscle Structure and Fat Deposition in Lactating Holstein Cows

High-yielding dairy cows need diets that meet their energy demand and contain sufficient essential nutrients such as n-3 fatty acids (FAs). Conjugated linoleic acid (CLA) is able to relieve the energy metabolism, but common corn silage and concentrate-based diets contain insufficient amounts of essential fatty acids (EFA). Abomasal infusion was used in the current study to supplement cows from 9 weeks antepartum to 9 weeks postpartum with either coconut oil (CTRL, n = 8), EFA (n = 9), or conjugated linoleic acid (CLA, n = 9), or a combination of both (EFA + CLA, n = 10). The study focused on the effects of FAs on peripheral tissues, such as longissimus muscle (MLD) and adipose tissues, which were harvested after slaughter. Fatty acid composition, muscle fiber and fat cell morphology, muscle fiber type transition, and gene expression were analyzed. Supplemented FAs and their metabolites were increased (p < 0.05) in MLD and intermuscular fat (INTF) but not in subcutaneous fat (SCF). The intramuscular fat content and gene expression of ACACA and FASN were increased in CLA-supplemented cows (p < 0.05). Supplementation did not affect the muscle fiber size and fiber type composition. Supplemented CLA had more effects than EFA, improving the energy balance of cows accompanied with increased triglyceride formation and storage.

Enhanced Cellulose Extraction from Banana Pseudostem Waste: A Comparative Analysis Using Chemical Methods Assisted by Conventional and Focused Ultrasound

This study investigates the effectiveness of various chemical methods, both ultrasound-assisted and non-assisted, for extracting cellulose from banana pseudostem (BPS) waste, comparing the results with commercial pine and eucalyptus cellulose fibers. Delignification treatments with NaOH (25% and 30%) and H2O2 (8%) were evaluated, applied with both conventional and focused sonication. Ultrasound-assisted methods, particularly with NaOH, achieved cellulose percentages as high as 99.5%. X-ray diffraction (XRD) analysis revealed that NaOH treatments significantly increased the cellulose crystallinity index, reaching up to 67.9%, surpassing commercial fibers. Scanning electron microscopy (SEM) results showed that NaOH treatments, especially at 30%, improved fiber morphology and exposure. Thermogravimetric analysis (TGA) indicated that methods using NaOH and focused sonication enhanced the thermal stability of the cellulose. Compared to commercial fibers, some samples obtained with the proposed methods demonstrated higher purity, yield, and thermal stability, highlighting the effectiveness of ultrasound-assisted and NaOH methods.

Preparation and application of polycaprolactone/β-cyclodextrin/gamma-Decalactone nanofiber composites in citrus postharvest diseases

Citrus fruits are highly susceptible to pathogenic fungal infections after harvesting, which causes serious economic losses. Therefore, it's necessary to develop new antifungal packaging. In this study, gamma-Decanolactone (DL) was successfully encapsulated in a polycaprolactone (PCL)/β-cyclodextrin (β-CD) composite system using electrostatic spinning technology. PCL/β-CD was compounded in different ratios, the ratio was screened through other indicators such as fiber morphologies and mechanical properties. Then, antifungal mats were prepared by adding different concentrations of DL to the PCL/β-CD solution. The results showed that when the mixture ratio of PCL/β-CD was 6:1 and loaded with 6 % DL, the antifungal felt had strong mechanical, significantly inhibiting the growth of three citrus pathogens (P. digitatum, P. italicum and G. candidum), released DL for up to 204 h and effectively reduced the morbidity rate of citrus fruits. Therefore, the antifungal pad prepared in this study has great potential in the field of citrus disease control.

UV-crosslinked collagen-chondroitin sulfate nanofibers: Insights on production, characterization, in-vitro digestibility

Electrospun polymer nanofibers have significant attention in various fields. In this study, collagen/chondroitin sulfate (Col/CS) nanofibers were fabricated by electrospinning, the effect of solution and processing parameters on fiber morphology was investigated. The resulting fibers were exposed to UV light for the crosslinking process. Granola bars with Col/CS nanofibers were prepared and subjected to in vitro digestion. The electrospun Col/CS nanofibers, fabricated at a 95:5 (w/w) ratio under 26 kV voltage, 0.8 mL/h feeding rate, and a 15 cm tip-to-collector distance, exhibited a smooth, bead-free fibrous morphology with an average diameter of 79.88 ± 6.01 nm. After UV-crosslinking, no new bands were observed in the FTIR spectrum, but notable changes occurred in the Amide I and II regions. Granola bars containing Col/CS nanofibers exhibited significantly higher Col content in the intestinal digestion fraction of in vitro digestion compared to the control group (free Col + CS). On the other hand, no significant difference was observed between the CS content of the samples after intestinal digestion. These findings demonstrate that electrospinning followed by UV crosslinking is an effective method for producing Col/CS fibers without the use of harsh solvents, highlighting Col/CS nanofibers as promising candidates for the development of novel functional foods.

Molecular regulation of lignin multi-level structure and conformational evolution for the self-powered fire alarm sensors

Many studies are still limited to focusing on the primary structure of biomass macromolecules, ignoring the impact of the multi-level structure of macromolecules and their conformational evolution on the high-value utilization of biomass. In this paper, a novel and clever strategy is designed and executed to regulate and immobilize the multi-level structure of lignin macromolecules. Lignin with different spatial conformations exhibits differences in physical properties and processability, despite their chemical primary structures being highly similar. In order to clearly and intuitively study the impact of multi-level structures, lignin-based carbon nanofibers (CFs) with high requirements for processing and precursor properties have been selected as the high-value utilization. The introduction of lignin with optimized multi-level structures effectively improves fiber morphology, uniform diameter, and flexibility. The resulting lignin-based CFs exhibit excellent refractoriness, stability, flame sensitivity (response time of only 1 s), and good energy storage properties (specific capacitance up to 226.1F/g). Furthermore, the CFs moist-electric generator has a high power generation efficiency, and the output voltage of a single device reaches 0.649 V and the output current is up to 160 μA. This work may explain a long-standing issue: why do lignin macromolecules with similar primary structures exhibit many differences in physical and processing properties, which is of great significance for promoting the industrial utilization of lignin macromolecules.

Impact of deep eutectic solvent pre-treatment on the extraction of cellulose nanofibers

Deep Eutectic Solvents (DESs) have emerged as promising eco-friendly pre-treatment agents for lignocellulosic biomass, offering considerable advantages for the nanofibrillation process. This study investigates the impact of DESs on cellulose fibers morphology, focusing on solubilization phenomena in the amorphous regions that may facilitate cellulose nanofiber production. The pre-treatment process combining a DES (triethylmethylammonium chloride and imidazole, TEMA:IMD) with microwave (MW) energy was optimized to enhance the solubility of cellulosic fibers. A response surface methodology (RSM) was employed to optimize the DES-MW-assisted pre-treatment. Results show that the reaction time and the temperature significantly influence the solubility of cellulosic fibers. The optimized conditions resulted in cellulose fibers with low content of hemicellulose and lignin, high crystallinity index, and improved thermal stability. The effectiveness of DES-MW pre-treatment in producing cellulose nanofibers (CNFs) from native and pre-treated fibers was investigated. Cellulose fibers pre-treated with a DES yielded CNFs with a narrower diameter distribution. Overall, optimized DES-MW pre-treatment offers a promising strategy for the efficient and sustainable extraction of CNFs.

Flexural behavior of concrete reinforced with micro basalt fibers and BFRP minibars

The use of basalt fibers as the reinforcement for concrete is an effective and eco-friendly solution to improve the ductile behavior and flexural toughness. For this purpose, an experimental investigation was conducted, where the concrete reinforced with micro basalt fibers or BFRP minibars were adopted. The morphologies of micro basalt fibers, straight, twisted and crimped BFRP minibars were analyzed for optimal enhancement effect. Also, the fiber length of 20 mm, 35 mm and 50 mm and fiber volume fraction of 0.5 %, 1 %, 2 % and 3 % were investigated. In addition, stiffer steel and softer polypropylene fibers were introduced to evaluate the effect of fiber modulus on concrete properties. The failure modes, load-deflection curves, fracture energy, flexural toughness and factor analysis were illustrated. The results show that the addition of micro basalt fibers with fiber lengths of 50 mm and volume fraction of 1 % increased the initial cracking strength by 28.8 %. Concrete reinforced with BFRP minibars with 50 mm in length and 1 % in volume fraction, has a flexural toughness ratio of 99.0 % of commercial steel fibers and a flexural toughness index (I5) of 113 % of commercial steel fibers. Based on the parametric analysis, the optimum length of BFRP minibars was 35 mm and the optimum fiber volume fraction was not more than 2 %. The prediction model for stress deflection response with high precision was proposed with regression coefficients ranging from 0.909 to 0.988. It was concluded that micro basalt fibers prevented the generation of microcracks through the bridging effect, whereas macrocracks and deep source cracks generated after concrete cracking were inhibited by BFRP minibars. The understanding of what exactly constitutes an optimal selection of fibers capable of producing maximum flexural properties of concrete was of great significance in engineering applications.

Effects of chronic heat stress on Ca2+ homeostasis, apoptosis, and protein carbonylation profiles in the breast muscle of broilers

Heat stress (HS) largely impairs the quality of broiler breast meat through protein oxidative modification. This study aimed to investigate the carbonylation pattern of Ca2+ channels and apoptotic proteins in the breast muscle of heat-stressed broilers. A total of 144 twenty-eight-day-old male Arbor Acres broilers were randomly divided into three treatment groups. The normal control (NC) group was kept at 22°C and provided with unlimited feed. The HS group was exposed to 32°C and provided with unlimited feed. The pair-fed (PF) group was kept at 22°C and given an amount of feed equivalent to that consumed by the HS group on the previous day. Results showed that broilers under HS conditions had a higher respiratory rate than those in NC and PF groups (P < 0.05). HS disrupted the morphology and structure of breast muscle fibers by decreasing the average diameters and average density of myofibers compared to the NC group (P < 0.05). HS increased the mean fluorescence intensity of the positive carbonyl signal in breast muscle compared with the NC group (P < 0.05). Besides, the pectoral Ca2+ concentration in the sarcoplasmic reticulum, cytoplasm, and mitochondria was elevated by HS when compared with the NC group (P < 0.05). In comparison to the NC and PF groups, HS increased the apoptosis rate and caspase-3 activity in the breast muscle (P < 0.05). Furthermore, HS elevated the relative protein expressions of plasma membrane Ca2+-ATPase, Na+/Ca2+ exchanger 1, and sarco/endoplasmic reticulum calcium transport ATPase 1 compared to the NC group (P < 0.05). Higher relative protein expression of μ-calpain and lower relative protein expression of cytosolic cytochrome complex were found in the HS group than the NC group (P < 0.05). HS decreased the carbonylation levels of transient receptor potential canonical 1 and inositol 1,4,5-trisphosphate receptor compared to the NC group (P < 0.05). Additionally, the carbonylation levels of cleaved caspase-3 and precursor caspase-9 were increased and decreased, respectively, by HS treatment compared to the NC group (P < 0.05). In conclusion, HS damages the myofiber based on Ca2+ dyshomeostasis and apoptosis, which are potentially associated with protein carbonylation. These results shed new light on the possible mechanism behind the development of poor meat quality in broilers due to HS.

Muscle-fiber specific genetic manipulation of Drosophila sallimus severely impacts neuromuscular development, morphology, and physiology.

The ability of skeletal muscles to contract is derived from the unique genes and proteins expressed within muscles, most notably myofilaments and elastic proteins. Here we investigated the role of the sallimus (sls) gene, which encodes a structural homologue of titin, in regulating development, structure, and function of Drosophila melanogaster. Knockdown of sls using RNA interference (RNAi) in all body-wall muscle fibers resulted in embryonic lethality. A screen for muscle-specific drivers revealed a Gal4 line that expresses in a single larval body wall muscle in each abdominal hemisegment. Disrupting sls expression in single muscle fibers did not impact egg or larval viability nor gross larval morphology but did significantly alter the morphology of individual muscle fibers. Ultrastructural analysis of individual muscles revealed significant changes in organization. Surprisingly, muscle-cell specific disruption of sls also severely impacted neuromuscular junction (NMJ) formation. The extent of motor-neuron (MN) innervation along disrupted muscles was significantly reduced along with the number of glutamatergic boutons, in MN-Is and MN-Ib. Electrophysiological recordings revealed a 40% reduction in excitatory junctional potentials correlating with the extent of motor neuron loss. Analysis of active zone (AZ) composition revealed changes in presynaptic scaffolding protein (brp) abundance, but no changes in postsynaptic glutamate receptors. Ultrastructural changes in muscle and NMJ development at these single muscle fibers were sufficient to lead to observable changes in neuromuscular transduction and ultimately, locomotory behavior. Collectively, the data demonstrate that sls mediates critical aspects of muscle and NMJ development and function, illuminating greater roles for sls/titin.

Synergistic tuning of microstructure and morphology in carbon molecular sieve hollow fibers for propylene/propane separation

Asymmetric carbon molecular sieve (CMS) hollow fiber membranes with tunable micro‐ and macro‐structural morphologies for energy efficient propylene‐propane separation are reported here. A sub‐glass transition temperature (sub‐Tg) thermal oxidative crosslinking strategy enables simultaneous optimization of the intrinsic molecular sieving properties while also reducing the thickness of the CMS “skin” derived from the 6FDA:BPDA/DAM polyimide precursors. Such synergistic tuning of CMS microstructure and macroscopic morphology of CMS hollow fibers enables significantly increased propylene permeance (reaching 186.5 GPU) while maintaining an appealing propylene/propane selectivity of 13.3 for 50/50 propylene/propane mixed gas feeds. Our findings reveal a more refined and versatile tool than available with previous O2‐doping pretreatments. The advanced approach here should be broadly useful to other polyimide precursors and diverse gas pairs.

Synergistic Tuning of Microstructure and Morphology in Carbon Molecular Sieve Hollow Fibers for Propylene/Propane Separation.

Asymmetric carbon molecular sieve (CMS) hollow fiber membranes with tunable micro- and macro-structural morphologies for energy efficient propylene-propane separation are reported here. A sub-glass transition temperature (sub-Tg) thermal oxidative crosslinking strategy enables simultaneous optimization of the intrinsic molecular sieving properties while also reducing the thickness of the CMS "skin" derived from the 6FDA : BPDA/DAM polyimide precursors. Such synergistic tuning of CMS microstructure and macroscopic morphology of CMS hollow fibers enables significantly increased propylene permeance (reaching 186.5 GPU) while maintaining an appealing propylene/propane selectivity of 13.3 for 50/50 propylene/propane mixed gas feeds. Our findings reveal a more refined and versatile tool than available with previous O2-doping pretreatments. The advanced approach here should be broadly useful to other polyimide precursors and diverse gas pairs.

Electrospinning of Sm0.5Sr0.5CoO3-δ nanofiber cathode for solid oxide fuel cells

Sm0.5Sr0.5CoO3-δ (SSC) fiber-electrode materials were prepared via electrospinning in this work. The characteristics of SSC fibers are influenced by the parameters of electrospinning, specifically the nitrate concentration of the spinning solution, applied voltage, and the gap between the spinneret and collector. The as-prepared SSC fibers exhibited average diameters ranging from 240 nm to 6.49 μm, which contracted to 50 nm–2.53 μm after calcination at 800 °C. Symmetric cells with SSC fiber-electrodes demonstrated an area-specific resistance (ASR) ranging from 0.212 to 0.508 Ω cm2 at 700 °C in air. In addition to the morphology of SSC fibers, the average grain size of the SSC fibers also exhibited potential influence on their ASR performance.

Ultrasonic-assisted synthesis for the production of green and sustainable hemp carboxymethyl cellulose

Hemp fiber (Cannabis sativa) is being widely used to produce carboxymethyl cellulose (CMC). This study focused on synthesizing carboxymethyl cellulose from bleached hemp fiber to investigate the impact of different factors, i.e., chemical concentration and synthesis time, on its characteristics. The fiber morphology analysis revealed desirable properties, which are essential for high-quality CMC production. Optimal condition for CMC synthesis were investigated, which involved using 20 % NaOH (w/v), the shortest total synthesis time (2.30h), and using 0.9 g MCA (w/w). This resulted in a non-significantly high DS (0.80) in both nonspray-dried and spray-dried hemp carboxymethyl cellulose, representing a high CMC content around 96 %. Moreover, the use of ultrasonic assistance and spray drying techniques significantly improved the hemp carboxymethyl cellulose properties, indicating a decreased molecular weight (2.65 × 104 g/mol) and a decreased particle size (7.82 μm). Thermal analysis revealed that spray-dried hemp carboxymethyl cellulose had lower thermal stability than hemp fiber and nonspray-dried hemp carboxymethyl cellulose. FTIR and 13C NMR analyses confirmed the successful CMC synthesis. Additionally, XRD and SEM analyses demonstrated changes in the crystalline structure and hemp carboxymethyl cellulose surface morphology. This revealed advanced techniques that could enhance hemp carboxymethyl cellulose quality and properties, making it suitable for various industrial applications.

Differential protection by nicotinamide in a mouse model of glaucoma DBA/2J revealed by second-harmonic generation microscopy.

Glaucoma is a blinding disease where the retinal ganglion cells and their axons degenerate. Degradation of axonal microtubules is thought to play a critical role in the pathogenesis, but the mechanism is unknown. Here we investigate whether microtubule disruption in glaucoma can be alleviated by metabolic rescue. The integrity of axonal microtubules and the morphology of the retinal nerve fibers were evaluated by second-harmonic generation microscopy in a mouse model of glaucoma, DBA/2J, which received a dietary supplement of nicotinamide (NAM) for reducing metabolic stress. It was compared with control DBA/2J, which did not receive NAM, and non-glaucomatous DBA/2J-Gpnmb+. We found that the morphology of the retinal nerve fibers, but not axonal microtubules, are significantly protected by NAM. The decoupling is analogous to microtubule deficit, a glaucoma pathology in which axonal microtubules exhibit rapid degradation compared to the morphology of the retinal nerve fibers. Understanding microtubule deficit could provide insights into the divergent responses to NAM. From co-registered images of second-harmonic generation and immunofluorescence, it was determined that microtubule deficit was not due to a shortage of tubulins. Furthermore, microtubule deficit colocalized with the sectors in which the retinal ganglion cells were disconnected from the brain, suggesting that microtubule disruption is associated with axonal transport deficit in glaucoma. Together, our data suggests significant role axonal microtubules play in glaucomatous degeneration, offering a new opportunity for neuroprotection.

Electrospinning of cellulose nanocrystals; procedure and optimization

Cellulose nanocrystals (CNCs) and cellulose microfibrils (CMFs) are promising materials with the potential to significantly enhance the mechanical properties of electrospun nanofibers. However, the crucial aspect of optimizing their integration into these nanofibers remains a challenge. In this work, we present a method to prepare and electrospin a cellulosic solution, aiming to overcome the existing challenges and realize the optimized incorporation of CNCs into nanofibers. The solution parameters of electrospinning were explored using a combined experimental and simulation (molecular dynamics) approach. Experimental results emphasize the impact of polymer solution concentration on fiber morphology, reinforcing the need for further optimization. Simulations highlight the intricate factors, including the molecular weight of cellulose acetate (CA) polymer chains, electrostatic fields, and humidity, that impact the alignment of CNCs and CMFs. Furthermore, efforts were made to study CNCs/CMFs alignment rate and quality optimization. It is predicted that pure CNCs benefit more from electrostatic alignment, while lower molecular weight CA enables better CNC/CMF alignment.

Crosslinked polyetherimide based electrospun membrane: Effect of fibre morphology on hot oil sorption

Handling hot oil spillage, particularly from oil refineries, petrochemical industry and automobiles is challenging and there have been limited solutions to address the issue. Polyetherimide (PEI) electrospun fibrous membranes were developed in this study by leveraging PEI's high-temperature stability to serve as promising materials for hot oil sorption. The morphology of the membrane forming fibers varied from circular to dumbbell shaped, by judicious choice of solvents of varying boiling points, to study the effect of fiber morphology on oil sorption capacity. Crosslinking of PEI membranes was carried out using ethylenediamine (EDA) to impart structural integrity and resiliency to the membranes. The PEI membrane composed of dumbbell-shaped fibers demonstrated an oil-sorption capacity of 25.4 ±1.5 g/g for engine oil at 150°C within one hour, outperforming a commercial polypropylene (PP) nonwoven absorbent, which failed and collapsed under the same high-temperature conditions. Enhanced oil sorption in the dumbbell-shaped fibrous membrane was achieved due to its lower tortuosity, aligned inter-fiber channels, and higher capillary pressure. Usefulness and sorption capacity of PEI based electrospun membranes may further be explored for controlling the oil spillage through introduction of specific surface features and functionalization.