Sustainable Materials and Technologies最新文献_第2页

Alpha-lipoic acid inspired cationic waterborne polyurethane/chitosan-modified cotton fabrics with enhanced dyeability and antioxidant properties 硫辛酸激发的阳离子水性聚氨酯/壳聚糖改性棉织物，具有增强的可染性和抗氧化性能

IF 8.6 2区工程技术

Sustainable Materials and Technologies Pub Date : 2025-05-13 DOI: 10.1016/j.susmat.2025.e01450

Xuemei He, Haoshun Xu, Songrun Yu, Haiyan Mao

{"title":"Alpha-lipoic acid inspired cationic waterborne polyurethane/chitosan-modified cotton fabrics with enhanced dyeability and antioxidant properties","authors":"Xuemei He, Haoshun Xu, Songrun Yu, Haiyan Mao","doi":"10.1016/j.susmat.2025.e01450","DOIUrl":"10.1016/j.susmat.2025.e01450","url":null,"abstract":"<div><div>The development of multifunctional cotton composites combining waterproof, wrinkle-resistant, anti-ultraviolet, antioxidant properties, along with good dyeability, is highly attractive for expanding their application in protective textiles. In the work, a composite cotton fabric (cWPU/CS/LA@C) was prepared via knife-coating process, using cationic waterborne polyurethane (cWPU) and chitosan (CS) as matrices, with alpha-lipoic acid (LA) serving as both the active ingredient and crosslinking agent. The mechanical properties of cWPU/CS/LA@C were significantly improved, showing a tensile strength of 58.74 MPa and an elastic modulus of 446.46 MPa. Additionally, it exhibited high hydrophobicity, excellent wrinkle resistance, good antioxidant activity and satisfactory low-temperature dyeability. Compared to the untreated cotton fabric, higher color depth (K/S) values were achieved for the modified cotton fabrics dyed with curcumin and reactive red KN-B at 30 °C and 60 °C, respectively. Meanwhile, the adsorption behavior of two dyes on modified cotton under these dyeing conditions followed the pseudo-first-order kinetic model. Furthermore, the color fastness of cWPU/CS/LA@C fabric remained at a high level even after 15 washing cycles. This research provides a simple feasible approach for preparation of multifunctional cotton composite materials and broadens their applications in technical and healthcare textile fields.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01450"},"PeriodicalIF":8.6,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recycling bovine ear tags for phase change material encapsulation via electrospinning 静电纺丝法回收牛耳标用于相变材料封装

IF 8.6 2区工程技术

Sustainable Materials and Technologies Pub Date : 2025-05-13 DOI: 10.1016/j.susmat.2025.e01449

Iker Alfonso , Tamara Calvo-Correas , Arantxa Eceiza , Adrian Claver , Stefano Torresi , Jose Antonio García , Iñaki Zalakain

{"title":"Recycling bovine ear tags for phase change material encapsulation via electrospinning","authors":"Iker Alfonso , Tamara Calvo-Correas , Arantxa Eceiza , Adrian Claver , Stefano Torresi , Jose Antonio García , Iñaki Zalakain","doi":"10.1016/j.susmat.2025.e01449","DOIUrl":"10.1016/j.susmat.2025.e01449","url":null,"abstract":"<div><div>In this study, thermoplastic polyurethane (TPU) from waste bovine ear tags has been processed and recycled as shell material to encapsulate phase change materials (PCMs), enabling the fabrication of thermoregulating core-shell nanofibers via coaxial electrospinning. Notably, this process was achie<em>v</em>ed in few steps and without the need for heating equipment to melt the injected materials, enhancing its simplicity. Two PCMs were selected based on their melting points; octadecane (OCTA) near room temperature and eicosane (EICO) near body temperature. Composite fibers were prepared at different core solution concentrations (10, 20, 40 and 80 % <em>w</em>/<em>v</em>), with the highest encapsulation efficiency and thermal properties obtained for samples with 80 % (<em>w</em>/<em>v</em>). TPU/PCM electrospun nanofibers were observed by scanning electron microscopy (SEM) with average diameters between 400 and 700 nm. The Fourier transform infrared spectroscopy (FTIR) suggested no further chemical reactions during the fabrication process. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) demonstrated good thermal stability, with latent heats of 62.9 2 J/g and 81.4 J/g for TPU/OCTA80 and TPU/EICO80 membranes, respectively. Thermal cycling tests were conducted for 150 cycles, showing a 5 % enthalpy reduction in TPU/OCTA80 due to crystalline phase degradation, while TPU/EICO80 exhibited a 2 % increase, likely due to PCM restructuring; however, long-term trends suggest a potential decline. This simple, cost-effective and environmentally friendly fabrication process highlights the potential of upcycling TPU waste and offers a scalable approach for developing TPU/PCM membranes with promising applications in textile thermal management systems.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01449"},"PeriodicalIF":8.6,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unraveling the structure and thermophysical property of heterogeneous eutectic salt by machine learning potential for solar thermal energy storage 利用机器学习揭示非均相共晶盐的结构和热物理性质

IF 8.6 2区工程技术

Sustainable Materials and Technologies Pub Date : 2025-05-13 DOI: 10.1016/j.susmat.2025.e01451

Wenguang Zhang, Heqing Tian, Tianyu Liu

{"title":"Unraveling the structure and thermophysical property of heterogeneous eutectic salt by machine learning potential for solar thermal energy storage","authors":"Wenguang Zhang, Heqing Tian, Tianyu Liu","doi":"10.1016/j.susmat.2025.e01451","DOIUrl":"10.1016/j.susmat.2025.e01451","url":null,"abstract":"<div><div>Molten salts are an excellent high temperature phase change thermal storage material with high heat storage density. Machine learning (ML) methods with deep potential have been recognized to have tremendous potential application advantages in predicting the thermal properties of molten salt. Herein, we employ the Deep Potential GENerator (DP-GEN) active learning approach to construct and evaluate the potential function of Na<sub>2</sub>CO<sub>3</sub>-NaCl heterogeneous eutectic salt, and the thermophysical properties and structures of eutectic salt are comprehensively predicted and analyzed. Density and radial distribution function (RDF) are used to validate the accuracy of the simulated structure and properties, with the density simulation results showing an error of merely 2.54 % compared to experimental data. DPMD achieves a level of accuracy comparable to AIMD in simulating melt structure, with an error of just 0.92 %. Na ions and O ions primarily form two types of tetrahedral structures within the molten salt system. CO<sub>3</sub><sup>2−</sup> exhibits a regular triangular structure, with C<img>O bonds oscillating in a plane centered on C. As the temperature increases from 973 K to 1173 K, the thermal conductivity decreases from 0.564 W/(m·K) to 0.559 W/(m·K), the viscosity decreases from 3.454 mPa·s to 1.978 mPa·s, a trend opposite to that of the self-diffusion coefficient (<em>D</em>). Change in viscosity is attributed to alterations in interparticle interactions, distances and coordination relationships. This work provide a new perspective to use DP-GEN active ML strategy to precisely predict structure and thermal property of heterogeneous molten salt systems.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01451"},"PeriodicalIF":8.6,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electron-beam radiation-induced ultrafast synthesis of highly conjugated carbon quantum dots with excellent fluorescence intensity 具有优异荧光强度的高共轭碳量子点的电子束辐射诱导超快合成

IF 8.6 2区工程技术

Sustainable Materials and Technologies Pub Date : 2025-05-11 DOI: 10.1016/j.susmat.2025.e01448

Chengcheng Liu , Kun Lv , Jiangtao Yu , Xueyan Que , Jialei Liu , Xingnan Ouyang , Moyan Li , Yaru Tian , Jian Song , Jinxing Wang , Jianming Li

{"title":"Electron-beam radiation-induced ultrafast synthesis of highly conjugated carbon quantum dots with excellent fluorescence intensity","authors":"Chengcheng Liu , Kun Lv , Jiangtao Yu , Xueyan Que , Jialei Liu , Xingnan Ouyang , Moyan Li , Yaru Tian , Jian Song , Jinxing Wang , Jianming Li","doi":"10.1016/j.susmat.2025.e01448","DOIUrl":"10.1016/j.susmat.2025.e01448","url":null,"abstract":"<div><div>A steadily increasing research interest has been devoted to carbon quantum dots (CQDs) as a highly promising visible-light-triggered material. However, the commonly used hydrothermal reaction method to produce CQDs is usually a lengthy and tedious process, which requires elevated temperatures. Herein, we report for the first time the rapid synthesis of highly conjugated CQDs using lignin as the precursor activated by high-energy electron-beam radiation from an electron accelerator at different doses (0–400 kGy). Lignin was used as the raw material for the generation of lignin fractions with different molecular weights by employing electron-beam radiation under ambient conditions within minutes, and the CQDs were directly obtained via centrifugation and dialysis. The CQDs obtained at an irradiation dose of 250 kGy have the highest fluorescence intensity. At a radiation dose of 250 kGy, the electron beam depolymerizes lignin into numerous small molecule fragments; these low-molecular-weight units can form a large number of highly conjugated carbon core structures (C=C), leading to a remarkable enhancement of the fluorescence intensity of CQDs. The synthesized CQDs have a positive effect on tomato photosynthesis at a concentration as low as 250 mg/L. This study establishes a new strategy for the large-scale synthesis of CQDs with higher fluorescence intensities, and the findings provide valuable ideas for future studies of electron-beam radiation-assisted synthesis of CQDs.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01448"},"PeriodicalIF":8.6,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Negative thermal expansion coefficient materials: From basics to applications, recent advances in solid oxide cells and future perspectives 负热膨胀系数材料：从基础到应用，固体氧化物电池的最新进展和未来展望

IF 8.6 2区工程技术

Sustainable Materials and Technologies Pub Date : 2025-05-10 DOI: 10.1016/j.susmat.2025.e01442

Piotr Winiarz , Amir Sultan , Yihan Ling , Kun Zheng

{"title":"Negative thermal expansion coefficient materials: From basics to applications, recent advances in solid oxide cells and future perspectives","authors":"Piotr Winiarz , Amir Sultan , Yihan Ling , Kun Zheng","doi":"10.1016/j.susmat.2025.e01442","DOIUrl":"10.1016/j.susmat.2025.e01442","url":null,"abstract":"<div><div>Negative thermal expansion has always interested scientists as an extraordinary physical property. Understanding this specific phenomenon allows to design and synthesize materials with abnormal, anisotropic, near-zero, or negative expansion. In effect, these materials find applications in many branches of science like mechanics, optics, micro- and nanoelectronics, magnetics, and medical and chemical applications. Since the great majority of these materials are electrical insulators, they did not find practical applications in electrochemistry. However, recently a new group of perovskite-based materials was discovered which gave vast opportunities to utilize such materials in fuel cell technology giving outstanding possibilities to improve and enhance their electrical, thermomechanical, and electrochemical properties. Therefore, the most limiting factor, which is the long-term stability, may be mitigated leading to improved electrolyte/electrode durability which enables future perspectives possibly allowing for faster commercialization of the technology.</div><div>In this review article, we present a general insight into thermal expansion and its physical explanation along with many examples of materials with negative expansion, exhibiting different crystal structures. Experimental techniques for thermal expansion coefficient evaluation are summarized and widely discussed. In the main part of the article, many applications of materials with negative expansion are presented, focusing on recent advances in electrochemistry, mainly as composite electrodes with negative thermal expansion materials addition, which improves the electrochemical performance of solid oxide cells. In the summary, we present drawn conclusions and discuss future perspectives as a widely and rapidly developing branch of electrochemistry.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01442"},"PeriodicalIF":8.6,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

MOF-derived tri-metallic nanoparticle-embedded cellulose aerogels for tetracycline degradation 用于四环素降解的mof衍生的三金属纳米颗粒包埋纤维素气凝胶

IF 8.6 2区工程技术

Sustainable Materials and Technologies Pub Date : 2025-05-10 DOI: 10.1016/j.susmat.2025.e01441

Javaria Khayaban E Erum, Tao Zhao, Yucong Yu, Junkuo Gao

{"title":"MOF-derived tri-metallic nanoparticle-embedded cellulose aerogels for tetracycline degradation","authors":"Javaria Khayaban E Erum, Tao Zhao, Yucong Yu, Junkuo Gao","doi":"10.1016/j.susmat.2025.e01441","DOIUrl":"10.1016/j.susmat.2025.e01441","url":null,"abstract":"<div><div>The persistent presence of tetracycline in water poses environmental risks, demanding sustainable remediation. Here, we synthesize MOF-derived tri-metallic nanoparticle–cellulose aerogels for enhanced degradation. By pyrolyzing a trimetallic MOF precursor (Fe/Co/Mn), highly dispersed tri-metallic nitrogen-doped carbon nanoparticles (NCNPs) with synergistic catalytic activity were generated and uniformly embedded within a porous, biodegradable cellulose aerogel matrix. The resulting hybrid aerogel combines the high surface area, porosity, and exceptional adsorption capacity of cellulose with the catalytic prowess of tri-metallic NCNPs, facilitating efficient tetracycline (TC) degradation via peroxymonosulfate (PMS) activation. Structural and morphological characterization (SEM, TEM, XRD, and XPS) confirmed the successful integration of NCNPs and the aerogel's 3D interconnected porous network. The composite demonstrated outstanding TC removal efficiency (99.3 % within 15 min under optimal conditions), owing to enhanced electron transfer and reactive oxygen species (ROS) generation. Mechanistic studies revealed singlet oxygen (<sup>1</sup>O₂) as the dominant species, followed by superoxide radicals (O₂<sup>•−</sup>), hydroxyl radicals (<sup>•</sup>OH), and sulfate radicals (SO₄<sup>•−</sup>). The proposed ROS generation and reaction pathway follows the sequence: <sup>1</sup>O₂ > O₂<sup>•−</sup> > <sup>•</sup>OH > SO₄<sup>•−</sup> highlighting the catalyst's ability to evolve multiple ROS with increasing oxidative selectivity. The aerogel exhibited excellent reusability (92.8 % efficiency after 5 cycles) and minimal metal leaching, underscoring its stability and environmental compatibility. This work showcases MOF-derived tri-metallic catalysts on biopolymer supports as scalable, eco-friendly solutions for antibiotic wastewater treatment.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01441"},"PeriodicalIF":8.6,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The evolution of Ga/In occurrence state and their dependence on jarosite during the precipitation enrichment for recovery of scattering metals and Cu from Zn leaching solution Zn浸出液中散射金属和Cu沉淀富集过程中Ga/In赋存状态的演化及其对黄钾铁矾的依赖

IF 8.6 2区工程技术

Sustainable Materials and Technologies Pub Date : 2025-05-09 DOI: 10.1016/j.susmat.2025.e01446

Weinan Dong , Xuehong Qiu , Weisong Zhao , Bao Guo , Kaixi Jiang

{"title":"The evolution of Ga/In occurrence state and their dependence on jarosite during the precipitation enrichment for recovery of scattering metals and Cu from Zn leaching solution","authors":"Weinan Dong , Xuehong Qiu , Weisong Zhao , Bao Guo , Kaixi Jiang","doi":"10.1016/j.susmat.2025.e01446","DOIUrl":"10.1016/j.susmat.2025.e01446","url":null,"abstract":"<div><div>In zinc hydrometallurgical plant, neutralizing precipitation and the subsequent dissolution are implemented to enrich scattering metals, Gallium (Ga) and Indium (In), and Cu from zinc leaching solution, facilitating further extraction and separation of Ga/In and others. The formation of jarosite presents both challenges and opportunities for Ga/In extraction, as Ga/In can substitute Fe within the jarosite structure. In this work, the evolution of the Ga/In occurrence state, especially its relationship with jarosite was investigated and the role of Fe/K/Pb was emphasized. Results show that jarosite formation is inevitable at pH 1–2, with K-jarosite forming kinetically faster than Pb-jarosite. By supplying sufficient K, precipitation rates reached 95.7 % for Ga and 98.1 % for In at pH 2 with little Cu/Ge loss. Eventually, a more appropriate and efficient flowsheet for recovery of scattering metals and Cu from zinc leaching solution is recommended, providing a practical framework comprehensive utilization in zinc hydrometallurgy.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01446"},"PeriodicalIF":8.6,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Co9S8-embedded sodium alginate aerogel: A novel high-efficiency photothermal aerogel for solar steam generation

IF 8.6 2区工程技术

Sustainable Materials and Technologies Pub Date : 2025-05-09 DOI: 10.1016/j.susmat.2025.e01447

Balamurugan Karuppaiah , Muhammad Faris Hamid , Moonwoo La , Dongwhi Choi , Sung Jea Park

{"title":"Co9S8-embedded sodium alginate aerogel: A novel high-efficiency photothermal aerogel for solar steam generation","authors":"Balamurugan Karuppaiah , Muhammad Faris Hamid , Moonwoo La , Dongwhi Choi , Sung Jea Park","doi":"10.1016/j.susmat.2025.e01447","DOIUrl":"10.1016/j.susmat.2025.e01447","url":null,"abstract":"<div><div>Utilizing the plentiful energy from the sun to produce clean water via solar steam generation systems offers a potential solution to alleviate persistent water and energy shortages. Aerogel-based interfacial solar steam generation has enormous potential for treating wastewater and desalination of salt water. In this study, a Co<sub>9</sub>S<sub>8</sub>/sodium alginate (Co<sub>9</sub>S<sub>8</sub>/SA) aerogel was developed for interfacial solar steam generation applications. Co<sub>9</sub>S<sub>8</sub> was prepared by the solvothermal method and dispersed into the 2 % SA hydrogel, followed by the freeze-drying of the Co<sub>9</sub>S<sub>8</sub>/SA matrix to create the aerogel. The physical and chemical characteristics of Co<sub>9</sub>S<sub>8</sub>/SA aerogel were examined using p-XRD, FE-SEM, contact angle measurements, XPS, and UV analysis. Co<sub>9</sub>S<sub>8</sub>/SA has remarkable properties, like the presence of voids in the structure, hydrophilicity, and strong solar absorption across the visible to infrared spectrum. Moreover, XPS spectra confirm the presence of an S-OH bond, which can strengthen the aerogel matrix. These advantageous properties collectively enhance the evaporation rate (1.81 kg/m<sup>2</sup>/h) with an admirable evaporation efficiency of 99.73 % under 1.0 sun illumination. Furthermore, Co<sub>9</sub>S<sub>8</sub>/SA exhibited good stability with different sun intensities and effective <span><span>seawater</span><svg><path></path></svg></span> desalination and dye removal. Thus, the developed Co<sub>9</sub>S<sub>8</sub>/SA aerogel is highly suited to solar steam generation and practical water purification applications.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01447"},"PeriodicalIF":8.6,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanocellulose domain-limit fluorinated graphite to achieve efficient lubrication of engineered steel surfaces 纳米纤维素领域限制氟化石墨，以实现工程钢表面的有效润滑

IF 8.6 2区工程技术

Sustainable Materials and Technologies Pub Date : 2025-05-09 DOI: 10.1016/j.susmat.2025.e01445

Zhiqiang Shan , Xiaohua Jia , Ding Wang , Jin Yang , Zhaofeng Wang , Haojie Song

{"title":"Nanocellulose domain-limit fluorinated graphite to achieve efficient lubrication of engineered steel surfaces","authors":"Zhiqiang Shan , Xiaohua Jia , Ding Wang , Jin Yang , Zhaofeng Wang , Haojie Song","doi":"10.1016/j.susmat.2025.e01445","DOIUrl":"10.1016/j.susmat.2025.e01445","url":null,"abstract":"<div><div>Nowadays, almost all research in friction testing has been devoted to exfoliateing fluorinated graphite (FGi) into thinner, less layered structures to increase its lubricating properties. The development of an exfoliating-free technology to achieve the efficient tribological performance of FGi would greatly avoid energy consumption and additional experimental operations. Herein, nanocellulose (NC) liquid-phase assisted ball-milling and freeze-induced self-assembly processes were used to achieve further refinement of crushed FGi and the construction of NC@FG large-sized interwoven lamellar structures. This process involves the further fragmentation of FGi and the disordered in-situ self-assembly of NC around FG particles, leading to the constriction of FGi into the NC-built interwoven layers. Without the need for additional separation and functionalization steps, NC@FG/sunflower oil (SFO) exhibits long-lasting stable lubricating properties. NC@FG reduced the friction coefficient and wear track width on the engineered steel surface by 32.67 % and 66.27 % as compared to pure SFO, and showing excellent lubricating properties on different substrates at the same time. The systematic wear tests and lubrication theory calculations reveal that the lubrication mechanism of NC@FG originates from the domain-limiting effect of NC on FG nanoparticles, which hinders the disordered movement and agglomeration of the nanocomponents, and improves the deconstruction of NC@FG at the friction interface. They were sequentially adsorbed at the friction interface, forming a continuous tribofilm to resist friction and wear.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01445"},"PeriodicalIF":8.6,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Superhydrophobic lignin reinforced rubber film as oil water separator

IF 8.6 2区工程技术

Sustainable Materials and Technologies Pub Date : 2025-05-08 DOI: 10.1016/j.susmat.2025.e01444

Banchamlak Bemerw Kassaun, Pedram Fatehi

{"title":"Superhydrophobic lignin reinforced rubber film as oil water separator","authors":"Banchamlak Bemerw Kassaun, Pedram Fatehi","doi":"10.1016/j.susmat.2025.e01444","DOIUrl":"10.1016/j.susmat.2025.e01444","url":null,"abstract":"<div><div>Natural rubbers (NR) are used widely in industry, yet they exhibit diminished tensile strength and deteriorate under high temperature and moisture conditions. Thus, additional substances are needed to improve their mechanical properties and thermal stability. In this study, we examined a hypothesis that the incorporation of lignin derivative, which was fabricated via aqueous-based copolymerization of kraft lignin (K) and aminopropyl/flurosilsesquioxane (WAPFSS), into the NR matrix would improve the hydrophobic, thermal and mechanical characteristics of NR. The findings of this study revealed that 20 wt% incorporation of lignin-silsesquioxane copolymer (W) into the NR formulation (W20) improved the mechanical properties of NR films by 81 %, which was 58 % higher than its counterpart, i.e., kraft lignin (KL) included NR matrix (K20 sample). Interestingly, the W20 sample was more mechanically durable after heat treatment and water exposure than K20 and pure NR. W20's 150° water contact angle and 10° slide angle confirmed its superhydrophobicity, which survived after high-temperature exposure and sandpaper wear tests. The W20 adsorbed oil at a higher rate than water and showed a 96 % oil separation efficiency. The present study provides foundations for fabricating superhydrophobic and sustainable lignin-reinforced natural rubber films with potential applications as oil and water separators.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01444"},"PeriodicalIF":8.6,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0