Functional Composite Materials最新文献_第5页

Beneficiation of microcrystalline graphite using evaporation assisted film flotation 微晶石墨蒸发辅助膜浮选选矿研究

Functional Composite Materials Pub Date : 2025-08-07 DOI: 10.1186/s42252-025-00072-y

Brijesh Meena, Kalyan Raidongia, Tamal Banerjee, Vaibhav V. Goud

{"title":"Beneficiation of microcrystalline graphite using evaporation assisted film flotation","authors":"Brijesh Meena, Kalyan Raidongia, Tamal Banerjee, Vaibhav V. Goud","doi":"10.1186/s42252-025-00072-y","DOIUrl":"10.1186/s42252-025-00072-y","url":null,"abstract":"<div><p>Graphite is considered a critical mineral by many countries due to its strategic importance, especially as an anode material in lithium-ion batteries. Natural graphite is preferred over synthetic forms for its lower carbon footprint. However, it typically occurs with aluminosilicate-based impurities (gangue) and requires beneficiation. With the shift from flake to microcrystalline graphite (MG) ores, traditional froth flotation becomes ineffective due to fine particle size and gangue entrapment, while chemical methods pose environmental and economic concerns. As a result, low-grade MG ores often remain unprocessed.</p><p>In this study, we present a novel, environmentally benign beneficiation method based on evaporation-assisted film flotation, which leverages the hydrophobicity of microcrystalline graphite and small size to form a thin film at the liquid–air interface, avoiding gangue entrapment. A low-grade MG ore was characterized, revealing a carbon content of 6.3 at% and natural graphitic flake size of 320 ± 200 nm. One gram of crushed raw ore powder was dispersed in 50 mL of 2.5 M NaOH and stirred at different temperatures (40 °C, 60 °C, and 80 °C) for 12 and 24 h. The optimal condition (60 °C for 24 h) for the current setup yielded a recoverable floating film of 3.01 wt%. Characterization of this film fraction showed a tenfold increase in carbon content (60.9 at%) and particle size of 643 ± 200 nm. These results demonstrate the effectiveness of the proposed film-flotation method for beneficiating low-grade microcrystalline graphite.</p></div>","PeriodicalId":576,"journal":{"name":"Functional Composite Materials","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmscomposites.springeropen.com/counter/pdf/10.1186/s42252-025-00072-y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluating the elastic recoverability of bitumen during ageing process 老化过程中沥青弹性恢复性能的评价

Functional Composite Materials Pub Date : 2025-07-01 DOI: 10.1186/s42252-025-00069-7

Jiayao Liu, Yongping Hu, Anand Sreeram

引用次数: 0

Biobased self-healing functional composites and their applications 生物基自修复功能复合材料及其应用

Functional Composite Materials Pub Date : 2025-04-16 DOI: 10.1186/s42252-025-00065-x

Elham Nadim, Ian Major, Declan Devine, Pavan Paraskar

{"title":"Biobased self-healing functional composites and their applications","authors":"Elham Nadim, Ian Major, Declan Devine, Pavan Paraskar","doi":"10.1186/s42252-025-00065-x","DOIUrl":"10.1186/s42252-025-00065-x","url":null,"abstract":"<div><p>Self-healing composites are innovative materials designed to autonomously repair damage and restore functionality, offering a sustainable alternative to traditional thermosetting materials. These materials enable self-repair without external intervention, extending service life and reducing maintenance costs. Recently, bio-based self-healing composites comprising matrices and fillers derived from renewable resources such as polysaccharides (e.g., cellulose), lignin, vegetable oils, and vanillin have emerged as a promising solution to reduce dependence on non-renewable petroleum-based materials. This review delves into the advancements in bio-based self-healing composites, with a focus on systems utilizing dynamic covalent bonds (e.g., hydroxyl ester, Schiff base, disulfide bonds) and dynamic non-covalent interactions. It explores diverse self-healing mechanisms, including supramolecular chemistry, covalent bond reformation, diffusion and flow, heterogeneous systems, and shape-memory effects, as well as their synergistic combinations. The discussion spans both physical and chemical approaches, highlighting integrated physico-chemical strategies. Furthermore, the review examines state-of-the-art fabrication techniques and the broad range of applications for these materials. Future perspectives and research directions underscore the pivotal role of bio-based self-healing composites in advancing sustainable and durable solutions across multiple industries.</p></div>","PeriodicalId":576,"journal":{"name":"Functional Composite Materials","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmscomposites.springeropen.com/counter/pdf/10.1186/s42252-025-00065-x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical, electrical, and damage self-sensing properties of basalt fiber/carbon nanotube/poly (arylene ether nitrile) composites 玄武岩纤维/碳纳米管/聚（芳醚腈）复合材料的机械、电气和损伤自感知性能

Functional Composite Materials Pub Date : 2025-03-12 DOI: 10.1186/s42252-025-00066-w

Libing Liu, Dong Xiang, Jingxiong Ma, Zhiyuan Liu, Guoqian Xie, Yusheng Gong, Chunxia Zhao, Hui Li, Bin Wang, Yuanpeng Wu

{"title":"Mechanical, electrical, and damage self-sensing properties of basalt fiber/carbon nanotube/poly (arylene ether nitrile) composites","authors":"Libing Liu, Dong Xiang, Jingxiong Ma, Zhiyuan Liu, Guoqian Xie, Yusheng Gong, Chunxia Zhao, Hui Li, Bin Wang, Yuanpeng Wu","doi":"10.1186/s42252-025-00066-w","DOIUrl":"10.1186/s42252-025-00066-w","url":null,"abstract":"<div><p>Basalt fiber reinforced polymer composites (BFRP) are widely applied in sectors such as aerospace, rail transportation, construction, and energy. However, developing BFRP with effective damage self-sensing capabilities remains a major technical challenge. This study utilized basalt fiber (BF) as both a reinforcement and volume exclusion phase to improve the mechanical and electrical properties of BF/carbon nanotube (CNT)/polyarylene ether nitrile (PEN) composites, aiming to achieve damage self-sensing functionality. The CNT content in BF/CNT/PEN was fixed at only 0.5 wt%. As the BF content increased from 10 wt% to 50 wt%, the mechanical properties of the BF/CNT/PEN composites improved, with tensile strength, flexural strength, and flexural modulus increasing by 39.0%, 26.3%, and 167.7%, respectively. Additionally, the electrical conductivity of composites with 40 wt% BF increased by three orders of magnitude compared to that with 10 wt% BF. Combined with acoustic emission (AE) monitoring, it was confirmed that composites with 40 wt% BF demonstrated excellent damage self-sensing and fracture warning capabilities under tensile and bending stress. This study not only improved the mechanical properties but also enhanced the electrical conductivity of the BFRP without the need for additional conductive materials, thereby ensuring effective damage self-sensing functionality. These results offer valuable insights for developing high-performance, multifunctional BFRP.</p></div>","PeriodicalId":576,"journal":{"name":"Functional Composite Materials","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmscomposites.springeropen.com/counter/pdf/10.1186/s42252-025-00066-w","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical and microstructural characterization of sisal fiber-reinforced polyester laminate composites for improved durability in automotive applications 剑麻纤维增强聚酯层压复合材料的机械和微观结构表征，用于提高汽车应用的耐久性

Functional Composite Materials Pub Date : 2025-01-17 DOI: 10.1186/s42252-024-00064-4

Getachew Gebremichael, Samuel Tesfaye Mekonone, Tertaraw Mucheye Baye, Aychew Asratie Ejigu

{"title":"Mechanical and microstructural characterization of sisal fiber-reinforced polyester laminate composites for improved durability in automotive applications","authors":"Getachew Gebremichael, Samuel Tesfaye Mekonone, Tertaraw Mucheye Baye, Aychew Asratie Ejigu","doi":"10.1186/s42252-024-00064-4","DOIUrl":"10.1186/s42252-024-00064-4","url":null,"abstract":"<div><p>This study investigates the effects of fiber concentration and the stacking sequence of laminae on the mechanical properties of a sisal-reinforced polyester composite. The mechanical properties, such as the tensile, flexural, and impact strength were characterized for laminated composite with different fiber concentrations and stacking sequences of lamina after they were processed using the hand layup weaved method. In addition to the mechanical properties, morphological analysis was done. Specimens with different fiber concentrations and stacking sequences were prepared using a manual compression molding technique that provides a flat plate with a thickness of 5 mm. The results showed that 40 wt% of sisal fiber-reinforced composites with 90/0/45 staking sequence have shown the maximum tensile (68.409 MPa), flexural (64.276 MPa), and impact (67.71 MPa) strength, and laminated composite with 90/0/45 staking sequence has shown superior tensile, flexural and impact properties as it compared with randomly oriented and non-woven fiber reinforced composite. The microstructure showed that a better interface adhesion was observed at 40 wt% of fiber and 90/0/45 staking sequence. Therefore, 90/0/45 laminated composite materials can be proposed for engineering applications that require equivalent properties, including automobile front-fender applications.</p></div>","PeriodicalId":576,"journal":{"name":"Functional Composite Materials","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://functionalcompositematerials.springeropen.com/counter/pdf/10.1186/s42252-024-00064-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-line NIR coupled with machine learning to predict mechanical properties and dissolution profile of PLA-Aspirin 在线近红外与机器学习相结合，预测聚乳酸-阿司匹林的机械性能和溶解曲线

Functional Composite Materials Pub Date : 2024-10-08 DOI: 10.1186/s42252-024-00063-5

Nimra Munir, Tielidy de Lima, Michael Nugent, Marion McAfee

{"title":"In-line NIR coupled with machine learning to predict mechanical properties and dissolution profile of PLA-Aspirin","authors":"Nimra Munir, Tielidy de Lima, Michael Nugent, Marion McAfee","doi":"10.1186/s42252-024-00063-5","DOIUrl":"10.1186/s42252-024-00063-5","url":null,"abstract":"<div><p>In the production of polymeric drug delivery devices, dissolution profile and mechanical properties of the drug loaded polymeric matrix are considered important Critical Quality Attributes (CQA) for quality assurance. However, currently the industry relies on offline testing methods which are destructive, slow, labour intensive, and costly. In this work, a real-time method for predicting these CQAs in a Hot Melt Extrusion (HME) process is explored using in-line NIR and temperature sensors together with Machine Learning (ML) algorithms. The mechanical and drug dissolution properties were found to vary significantly with changes in processing conditions, highlighting that real-time methods to accurately predict product properties are highly desirable for process monitoring and optimisation. Nonlinear ML methods including Random Forest (RF), K-Nearest Neighbours (KNN) and Recursive Feature Elimination with RF (RFE-RF) outperformed commonly used linear machine learning methods. For the prediction of tensile strength RFE-RF and KNN achieved <i>R</i>\u0000<sup>2</sup> values 98% and 99%, respectively. For the prediction of drug dissolution, two time points were considered with drug release at t = 6 h as a measure of the extent of burst release, and t = 96 h as a measure of sustained release. KNN and RFE-RF achieved <i>R</i>\u0000<sup>2</sup> values of 97% and 96%, respectively in predicting the drug release at t = 96 h. This work for the first time reports the prediction of drug dissolution and mechanical properties of drug loaded polymer product from in-line data collected during the HME process.</p></div>","PeriodicalId":576,"journal":{"name":"Functional Composite Materials","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://functionalcompositematerials.springeropen.com/counter/pdf/10.1186/s42252-024-00063-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A brief review on electrospun polymer derived carbon fibers for EMI shielding applications 关于用于 EMI 屏蔽的电纺聚合物衍生碳纤维的简要综述

Functional Composite Materials Pub Date : 2024-09-20 DOI: 10.1186/s42252-024-00060-8

B. D. S. Deeraj, Rhiya Paul, Kuruvilla Joseph

引用次数: 0

Electromagnetic interference shielding properties of PMMA modified-Co0.5Zn0.5Fe2O4 − polyaniline composites PMMA 改性-Co0.5Zn0.5Fe2O4-聚苯胺复合材料的电磁干扰屏蔽性能

Functional Composite Materials Pub Date : 2024-09-09 DOI: 10.1186/s42252-024-00059-1

Parthasarathi Bera, R. V. Lakshmi, R. P. S. Chakradhar, Suryasarathi Bose, Harish C. Barshilia

{"title":"Electromagnetic interference shielding properties of PMMA modified-Co0.5Zn0.5Fe2O4 − polyaniline composites","authors":"Parthasarathi Bera, R. V. Lakshmi, R. P. S. Chakradhar, Suryasarathi Bose, Harish C. Barshilia","doi":"10.1186/s42252-024-00059-1","DOIUrl":"10.1186/s42252-024-00059-1","url":null,"abstract":"<div><p>Present work reports solution combustion synthesis (SCS) of Co<sub>0.5</sub>Zn<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> spinel ferrite, its chemical modification with polymethylmethacrylate (PMMA), synthesis of polyaniline (PANI), and electromagnetic interference (EMI) shielding properties of their composites. Both as-prepared and PMMA-modified Co<sub>0.5</sub>Zn<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> adopt cubic spinel structure as shown by X-ray diffraction studies. Field emission scanning electron microscopy images show the agglomerated and microporous nature of the ferrites. High resolution transmission electron microscopy image of as-prepared Co<sub>0.5</sub>Zn<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> shows lattice fringes related to (311) plane of the spinel structure. X-ray photoelectron spectroscopy studies reveal the presence of Co<sup>2+</sup>, Zn<sup>2+</sup>, and Fe<sup>3+</sup> in tetrahedral and octahedral coordinations in the ferrite. EMI shielding properties are evaluated for PMMA-modified Co<sub>0.5</sub>Zn<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> and PANI composites in different weight ratios. Composites containing PMMA-modified ferrite and PANI with 50:50 and 10:90 weight ratios show the best performance among all the composites in 2−20 GHz frequency range. Optimized PMMA-modified Co<sub>0.5</sub>Zn<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> and PANI composite with the ratio of 10:90 shows shielding effectiveness (SE) values of −16.6 to −24.2 dB in 2−20 GHz frequency region.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":576,"journal":{"name":"Functional Composite Materials","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://functionalcompositematerials.springeropen.com/counter/pdf/10.1186/s42252-024-00059-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142160131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing waste asphalt durability through cold recycling and additive integration 通过冷回收和添加剂整合提高废旧沥青的耐久性

Functional Composite Materials Pub Date : 2024-09-04 DOI: 10.1186/s42252-024-00061-7

Ali Almusawi, Mustafa Mohammed Jaleel, Sarmad Shoman, Andrei P. Lupanov

{"title":"Enhancing waste asphalt durability through cold recycling and additive integration","authors":"Ali Almusawi, Mustafa Mohammed Jaleel, Sarmad Shoman, Andrei P. Lupanov","doi":"10.1186/s42252-024-00061-7","DOIUrl":"10.1186/s42252-024-00061-7","url":null,"abstract":"<div><p>The longevity of waste asphalt can be considerably improved through cold recycling techniques combined with various additives. This research investigates the cold regeneration of aged asphalt concrete using Reclaimed Asphalt Pavement (RAP), Portland cement, cationic bitumen emulsion, and additional aggregates. The primary goal is to evaluate the performance enhancements in terms of average density, compressive strength, water resistance, and swelling across different mix compositions. Three distinct mixtures were formulated and assessed. Mix No. 1, composed solely of RAP, showed the lowest average density and highest swelling, indicating poor performance due to the lack of binding agents. Mix No. 2, which incorporated RAP, Portland cement, and water, exhibited the highest density and compressive strength, highlighting the crucial role of Portland cement in improving structural integrity. Mix No. 3, a more complex mixture including RAP, aggregates, Portland cement, water, and bitumen emulsion, displayed balanced properties with enhanced moisture resistance and reduced swelling. The experimental findings emphasize the effectiveness of adding Portland cement and bitumen emulsion to improve the mechanical and durability characteristics of recycled asphalt mixtures. Specifically, Mix No. 2 and Mix No. 3 demonstrated significant performance improvements, making them suitable for road maintenance applications. This study advocates for the widespread use of cold recycling methods with additive integration to achieve sustainable and cost-effective pavement restoration solutions.</p></div>","PeriodicalId":576,"journal":{"name":"Functional Composite Materials","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://functionalcompositematerials.springeropen.com/counter/pdf/10.1186/s42252-024-00061-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142137632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new strategy for fabricating a stacked flexible capacitive sensor 制造堆叠式柔性电容传感器的新策略

Functional Composite Materials Pub Date : 2024-07-24 DOI: 10.1186/s42252-024-00058-2

Yuanxiang Zhu, Daming Wu, Haohua Jiang, Weile Zhang, Lihao Shen, Jingyao Sun, Jian Zhuang, Hong Xu, Yao Huang

{"title":"A new strategy for fabricating a stacked flexible capacitive sensor","authors":"Yuanxiang Zhu, Daming Wu, Haohua Jiang, Weile Zhang, Lihao Shen, Jingyao Sun, Jian Zhuang, Hong Xu, Yao Huang","doi":"10.1186/s42252-024-00058-2","DOIUrl":"10.1186/s42252-024-00058-2","url":null,"abstract":"<div><p>Currently, flexible capacitive sensors have a wide range of application scenarios in the field of wearable electronic devices. In order to detect more subtle joint movements of the human body, a method of fabricating stacked capacitive sensors is demonstrated. An ultrathin dielectric elastomer film of about 110 μm by the “secondary calendering” method was prepared. The shape of the electrode layers was designed, printed the electrode materials on the dielectric elastomer film by screen-printing, realized the stacked-layer technology, and connected each sensor unit in parallel by the electrode columns formed inside. A 12-layer flexible capacitive sensor with an initial capacitance of 10.2nF, good resolution (1% strain), high sensitivity (1.09) and stability under 10,000 cycles is fabricated. The sensor fabricated in this paper can recognize the motion at various joints of the human body, such as elbow and knee joints. This paper provides a new method for fabrication of stacked flexible capacitive sensors, which opens up new applications in flexible sensors, wearable electronic devices and human-computer interaction.</p></div>","PeriodicalId":576,"journal":{"name":"Functional Composite Materials","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://functionalcompositematerials.springeropen.com/counter/pdf/10.1186/s42252-024-00058-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0