Advanced Composites and Hybrid Materials最新文献

{"title":"Preparation of carbon-based conductive hydrogels and their potential for promoting nerve regeneration","authors":"Shuhui Yang,&nbsp;Jie Pan,&nbsp;Haijing Fu,&nbsp;Jingchuan Zheng,&nbsp;Fang Chen,&nbsp;Mingchen Zhang,&nbsp;Zhe Gong,&nbsp;Kaiyu Liang,&nbsp;Chengcheng Wang,&nbsp;Juncheng Lai,&nbsp;Xiangqian Fang,&nbsp;Jinjin Zhu","doi":"10.1007/s42114-025-01261-w","DOIUrl":"10.1007/s42114-025-01261-w","url":null,"abstract":"<div><p>Conductive hydrogels have the potential to facilitate nerve regeneration through various mechanisms, including providing physical support, enabling electrical signal transmission, and stimulating nerve cells to release growth factors. Carbon-based conductive materials, such as carbon nanotubes (CNTs) and graphene oxide (GO), are widely used in the construction of conductive hydrogels due to their advantages in electrical conductivity and biosafety. Herein, we fabricated conductive hydrogels by incorporating CNTs or GO into gelatin or chitosan. The gelatin- and chitosan-based electrospun fiber hydrogels were synthesized at room temperature using acetic acid/hexafluoroisopropanol and acetic acid/water as solvents, respectively. Subsequently, we investigated the morphology, swelling properties, mechanical properties, and electrical performance of the hydrogels. Scanning electron microscopy (SEM) images verified the uniform distribution of CNTs and GO within the different hydrogel formulations. The network structure formed by CNTs enhanced the swelling rate of the hydrogels. The incorporation of CNTs and GO elevated the compression elastic moduli of the hydrogels. Conductivity experiments revealed that the conductivity of graphene oxide was significantly improved upon soaking with sodium ascorbate. Notably, chitosan hydrogels containing reduced graphene oxide exhibited the highest conductivity. Pheochromocytoma 12 (PC12) cells could adhere to and spread on the hydrogels surface. These findings suggest that conductive hydrogels hold great promise as candidates for nerve repair in the future.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01261-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143481272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The embira bark fiber: a sustainable Amazon tape","authors":"Sheron S. Tavares,&nbsp;Lucas de Mendonça Neuba,&nbsp;Henry Colorado Lopera,&nbsp;Sergio Neves Monteiro,&nbsp;Marc André Meyers","doi":"10.1007/s42114-024-01170-4","DOIUrl":"10.1007/s42114-024-01170-4","url":null,"abstract":"<div><p>The embira bark fiber is routinely used in Brazil to construct simple structures because of its ease of extraction, flexibility, and considerable strength. It plays an important role, somewhat similar to duct tape, and is commonly used for temporary repairs and tying objects. The flexible bark is removed from the tree by making two cuts into it and manually pulling off the fibrous structure. Three similar but distinct embira bark fibers are characterized structurally and mechanically: <i>embira branca</i>, <i>embira capa bode</i>, and <i>embira chichá</i>. The bark separates readily into strips with thicknesses between 0.3 and 1 mm, enabling it to be twisted and bent without damage. The structure consists of aligned cellulose fibers bound by lignin and hemicellulose. Thus, it is a natural composite. The tensile strength of the three fibers varies in the range of 25 to 100 MPa, with no clear difference between them. There is structural and strength consistency among them. The mechanical strength of <i>embira branca</i> is measured for different fiber bundle diameters and is found to increase with decreasing diameter. Thermogravimetric analysis showed that degradation of the fibers initiates at 250 °C, consistent with other lignocellulosic fibers. X-ray diffraction identifies two major components: the monoclinic crystalline structure of cellulose and an amorphous phase; the crystallinity index is approximately 50%. The tensile strength shows significant variation, a characteristic of biological materials; this can be significantly improved by selective growing of embira-bearing trees.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-024-01170-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143475231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on thin-layer broadband metamaterial absorber based on composite multi-opening ring pattern of magnetic dielectric layers","authors":"Qin Huang,&nbsp;Wei Xie,&nbsp;Faleh Zafer Alqahtany,&nbsp;Taishan Cao,&nbsp;Gaber A. M. Mersal,&nbsp;Zhexenbek Toktarbay","doi":"10.1007/s42114-025-01250-z","DOIUrl":"10.1007/s42114-025-01250-z","url":null,"abstract":"<div><p>Balancing the thickness and bandwidth of electromagnetic wave–absorbing materials has been a challenging task. In this study, a thin and broadband metamaterial absorber consisting of a frequency selective surface (FSS) layer compounded with a magnetic dielectric layer was proposed. The changes in the wave absorbing properties of the absorbers with different numbers of openings in the open circular structure and combinations of open circular rings were analyzed. After obtaining the optimum combination of patterns, the effect of parameter variations on the microwave absorption properties of metamaterial wave absorbers was investigated. The test results show that the optimized metamaterial absorber has a thickness of 1.7 mm, a simulated absorption bandwidth of up to 10.0 GHz, and a microwave reflection loss of less than − 10 dB in the frequency band of 8.0–18.0 GHz. The absorber was prepared and its reflection loss was measured. It is found that these test results have the same trend as the simulation results, which verifies the feasibility of the metamaterial absorber structure design; the proposed two-layer magnetic dielectric composite FSS structure improves the overall impedance matching, avoids the electromagnetic wave being reflected in the surface, and makes the electromagnetic wave enter the interior more; when the resonant absorption peak generated by the introduction of FSS is close to the absorption peak generated by the magnetic dielectric layer, continuous absorption will be achieved, which is the reason for the wide absorption band of the metamaterial absorber. This novel structure takes into account the characteristics of thin layer, broadband absorption, and polarization insensitivity, which has a potential application prospect in stealth technology.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01250-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143466002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A semi-transparent strong biomimetic wound healing material: zinc oxide and sodium alginate based bi-layer nanofiber membrane","authors":"Muzammil Kuddushi,&nbsp;Tanay Kumar,&nbsp;Hongyan Wu,&nbsp;Sherry Chen,&nbsp;Ben Bin Xu,&nbsp;Naved Malek,&nbsp;Larry Unsworth,&nbsp;Jiangtao Xu,&nbsp;Jiangwen Zhang,&nbsp;Xihua Wang,&nbsp;Xuehua Zhang","doi":"10.1007/s42114-025-01269-2","DOIUrl":"10.1007/s42114-025-01269-2","url":null,"abstract":"<p>Wound healing is a critical process that significantly impacts patient health and places a substantial burden on healthcare systems. This study aimed to develop and evaluate transparent composite nanofibrous membranes with enhanced biological functionality as advanced wound dressing materials. We hypothesized that the incorporation of sodium alginate (NaAlg) or zinc oxide (ZnO) into electrospun polymer nanofibers, combined with the use of a conductive aluminum mesh during fiber collection, would result in membranes with locally aligned nanofibers, enabling optical transparency, biocompatibility, and mechanical properties. By using a 1.58 mm aluminum square mesh as a fiber collector during electrospinning of polycaprolactone (PCL)/ethylene vinyl alcohol (EVOH), we fabricated composite fiber membranes with varying concentrations of NaAlg (1–5% w/v) or ZnO (1–3% w/v). The use of the conductive mesh led to partial alignment of the nanofibers, enhancing light transmission and achieving notable optical transparency (up to  40% for NaAlg and  22% for ZnO). These membranes also exhibited a bi-layer structural configuration, robust mechanical properties (12–13 MPa), and optimal water vapor transmission rates (WVTR,  1400–1700 g/m<span>(^{2})</span>/day). Biological assessments, including disc diffusion and cytotoxicity tests, demonstrated excellent biocompatibility (85–100% viability with HaCaT cells) and promising blood-clotting properties. These findings suggest that the developed nanofiber membranes, through their unique alignment-driven transparency and multifunctionality, can effectively monitor wound healing in real-time, absorb substantial exudate, and provide a protective barrier against environmental contaminants. This work highlights the novelty and potential of these nanofiber membranes as advanced biomaterials for diverse wound dressing applications.</p>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01269-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143455607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Plasma modification of the structural, morphological, and catalytic activity of Fe3O4@SiO2@TiO2 core–shell system","authors":"Amr Gangan,&nbsp;Alaa Fahmy,&nbsp;Seham A. Shaban,&nbsp;Zeinhom M. El-Bahy","doi":"10.1007/s42114-025-01260-x","DOIUrl":"10.1007/s42114-025-01260-x","url":null,"abstract":"<div><p>Pulsed DC plasma-liquid interaction was used to prepare Ag-doped Fe₃O₄@SiO₂@TiO₂ (PP-FST) core–shell in a very short time compared to conventional methods. Tetraethyl orthosilicate (TEOS) and Ti(IV) isopropoxide precursors were employed as sources of SiO₂ and TiO₂, respectively, under the influence of plasma-liquid interaction using silver metal electrodes. TEM images and EDS mapping proved the successful formation of Fe₃O₄@SiO₂@TiO₂ core–shell structure without the detection of Ag NPs on the PP-FST surface. This proposed the dispersion of Ag NPs within TiO₂ lattice during the synthesis process using the plasma-liquid technique. The XRD patterns show an increase of the crystallinity of the sample after exposure to plasma. Furthermore, structural and optical properties were studied using XPS and UV–Vis, respectively. The synthesized FST core–shell exhibited outstanding light absorption capabilities which may be attributed to the strong surface plasmon resonance (SPR) effect at the interface of the Ag nanoparticles and the TiO₂ semiconductor. This interaction lowers the energy band gap of PP-FST to 2.05 eV, compared to 2.73 eV for FST. The specific surface area determined by BET analysis was 53.9 m²/g for PP-FST, whereas it was 34.1 m²/g for FST. Moreover, the activity of both the plasma-prepared and conventionally synthesized FST core–shell nano-catalysts was evaluated for the removing of toxic dyes such as Acid Orange 142 (AO). The degradation efficiency significantly increased to 99.6% for PP-FST compared to 80% for FST, highlighting the effect of plasma treatment.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01260-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microscopic mechanism of cellulose nanofibers modified cemented gangue backfill materials","authors":"Jiangyu Wu,&nbsp;Shuo Yang,&nbsp;Marcus Williamson,&nbsp;Hong S. Wong,&nbsp;Tushar Bhudia,&nbsp;Hai Pu,&nbsp;Qian Yin,&nbsp;Dan Ma,&nbsp;Weiqiang Chen","doi":"10.1007/s42114-025-01270-9","DOIUrl":"10.1007/s42114-025-01270-9","url":null,"abstract":"<div><p>Reinforcing the performances of cemented backfill materials to recycle gangue and tailings is crucial for the sustainable development of mineral resources and mining waste management. However, under practical constraints of low cost, high waste ratio, low carbon emission, and low binder consumption, solidifying upcycles of mining wastes with toxicity, porosity, and mollification to cemented backfill materials with superior properties are inherently contradictory and challenging. This study reported a waste-to-wealth pathway that improves cemented gangue backfill materials by cellulose nanofibers to recycle mining wastes and partially replace cement. Mechanical compression, X-ray diffraction, thermogravimetry, mercury intrusion porosimetry, scanning electron microscopy tests, fractal quantitative analyses of microstructures, and molecular dynamics simulations were carried out to reveal the action mechanism of TEMPO-modified cellulose nanofibers on cemented gangue backfill materials. The difference in the contribution of TEMPO-modified cellulose nanofibers and mechanical cellulose nanofibers to the strengths of cemented gangue backfill materials was analyzed. The results show a series of microscopic improvements of cellulose nanofibers on cemented gangue backfill materials, including regulating cemented gel polymerization, increasing hydration nucleation, inhibiting carbonization, densifying pore structure, enhancing Ca-O connections and H bonds, and preventing C-S–H fracture along interlayer water. Excessive cellulose nanofibers are also found to be harmful to this composite mainly by delaying hydration crystallization and increasing pores by entrapping air, while it still exhibits improvements in deformation resistance and energy absorption despite strength deterioration. The strength and energy absorption reinforcements of this cemented hybrid materials induced by cellulose nanofibers with optimal dosage can reach up to 30 ~ 50%.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01270-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface energy induced microstructural engineering of bio-derived N-doped carbon fibers anchored by CoNi nanoparticles for superior microwave absorption","authors":"Ying Li,&nbsp;Zhenxin Liu,&nbsp;Yuhao Lu,&nbsp;Minglong Yang,&nbsp;Peng Zhang,&nbsp;Dongyi Lei,&nbsp;Chengkan Liu,&nbsp;Sijia Wang,&nbsp;Chunlei Dong","doi":"10.1007/s42114-025-01262-9","DOIUrl":"10.1007/s42114-025-01262-9","url":null,"abstract":"<div><p>Microstructural engineering has been an effective way to modulate the performance of electromagnetic wave absorption (EMA) materials. However, there are still severe challenges in how to design and regulate the microstructure effectively and further elucidate its mechanisms. Here, three-dimensional (3D) bio-derived N-doped carbon fibers anchored by CoNi nanoparticles (N-C_f@CoNi) nanocomposites were successfully prepared using biomass cotton and ZIF-67 precursor as raw materials by a two-step impregnation-carbonization method. By ingeniously adjusting the mass ratio of the ZIF-67 precursor, the surface morphology of balsam pear-like fiber was induced by crystal surface energy to achieve a transition from a “nanotube-assembled nest-like” structures to “rice-shaped nanosheets” to “nanoparticles.” The unique microstructural engineering strategy endows the N-C_f@CoNi nanocomposites with an abundant conductive network, enhanced multiple reflection and absorption, polarization, and magnetic loss, thereby leading to distinguished EMA performance, especially ultrawide EAB values. The optimized N-C_f@CoNi nanocomposites display a minimum reflection loss (RL_min) of − 59.43dB and an effective absorption bandwidth (EAB) of 8.5 GHz at a matching thickness of 2.16 mm. The result underscores the potential of microstructural engineering induced by crystal surface energy in optimizing the microwave absorption of N-C_f@CoNi nanocomposites, laying the foundation for the development of efficient EMA materials with controllable micro-morphology.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01262-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tungsten oxide/reduced graphene oxide composite electrodes for solid-state asymmetric supercapacitor application","authors":"Sujata B. Patil,&nbsp;Ranjit P. Nikam,&nbsp;Vaibhav C. Lokhande,&nbsp;Chandrakant D. Lokhande,&nbsp;Raghunath S. Patil","doi":"10.1007/s42114-025-01268-3","DOIUrl":"10.1007/s42114-025-01268-3","url":null,"abstract":"<div><p>Tungsten oxide (WO₃) thin films were deposited on flexible stainless steel (SS) substrates via low-cost chemical bath deposition (CBD) method by varying concentration of sodium tungstate precursor (0.05–0.2 M). Also, tungsten oxide/reduced graphene oxide (WO₃/rGO) nanocomposite thin films were deposited (0.15 M sodium tungstate precursor concentration) at different rGO concentration variations (0.5, 1, and 1.5 mg mL⁻¹). The effect of precursor concentration and rGO addition on the physicochemical properties of electrodes was studied. The thin films of WR2 (deposited at 0.15 M sodium tungstate and 1 mg mL⁻¹ rGO concentration) nanocomposites exhibited a hexagonal crystal structure along with a surface morphology resembling nanorods. The appearance of rGO in WO₃/rGO was proved from the FT-IR, RAMAN, and EDAX studies. WR2 nanocomposite thin film exhibited 1060 F g⁻¹ specific capacitance at scan rate of 5 mV s⁻¹. The flexible WR2//PVA-H₂SO₄//activated carbon asymmetric (ASC) device was fabricated using WR2 as a negative electrode and activated carbon as a positive electrode which showed a specific capacitance of 175 F g⁻¹ with energy and power densities of 19.1 Wh kg⁻¹ and 0.43 KW kg⁻¹, respectively, with 81.3% capacitive retention over 5000 CV cycles.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01268-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hybrid near-infrared-activated luminescent gold nanoparticle platform for efficient cancer therapy","authors":"Feihong Yan,&nbsp;Ruiyuan Li,&nbsp;Jiaxin Liu,&nbsp;Lulu Yang,&nbsp;Helin Liu,&nbsp;Shengcang Zhu,&nbsp;Yuhui Zhang,&nbsp;Lijun Wang,&nbsp;Lu Huang,&nbsp;Yu Wang,&nbsp;Yaqiang Qin,&nbsp;Yuhang Zhang,&nbsp;Xin Wang,&nbsp;Yuan Wang,&nbsp;Jianping Zhang,&nbsp;Yinlin Sha,&nbsp;Limin Fu,&nbsp;Zhiyong Liu,&nbsp;Rongcheng Han,&nbsp;Yuqiang Jiang","doi":"10.1007/s42114-024-01141-9","DOIUrl":"10.1007/s42114-024-01141-9","url":null,"abstract":"<div><p>The development of a multifunctional therapy nanoplatform is of crucial importance to tackle the complex challenges associated with cancer. Despite significant advancements in tumor treatment, the efficacy of these traditional approaches remains insufficient. Recurrence and metastasis following tumor treatment continue to represent a significant contributor to tumor-related mortality. This paper presents an improved, facile, and relatively green fabrication of (5-mercapto-1,3,4-thiadiazol-2-ylthio) acetic acid (TMT)-coated luminescent gold nanoparticles (L-AuNP@TMT), which exhibit highly membrane-targeting capacity and superior photodynamic properties. Furthermore, in vivo tumor-bearing mouse model experiments indicated that the L-AuNP@TMT could be used as a two-photon excited nanomedicine via pyroptosis-mediated anti-tumor immunity for effectively eliminating colorectal cancer (CRC), the third most common malignancy and the second deadliest cancer, without evident toxic side effects or tumor metastasis/recurrence. According to its facile and green fabrication approach, near-infrared light-activatable highly efficient photodynamic cancer therapy, and noninvasive imaging mode, this multifunctional nanoplatform offers significant advantages over traditional monotherapy techniques, providing an alternative for the precise clinical treatment of cancer.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-024-01141-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of ecofriendly, biodegradable electrically conductive double-layer bio-hydrogel nanocomposite for sustainable medical device applications","authors":"Zohre Jafari Vafa,&nbsp;Ehsan Nazarzadeh Zare,&nbsp;Mohammad Reza Fadavi Eslam,&nbsp;Pooyan Makvandi","doi":"10.1007/s42114-025-01226-z","DOIUrl":"10.1007/s42114-025-01226-z","url":null,"abstract":"<div><p>Electrotherapy devices used for pain relief and muscle recovery often face challenges because traditional electrode materials are not biodegradable, causing environmental issues and being less compatible with the body. While current conductive hydrogels show potential, they usually lack the combination of good electrical performance, biodegradability, and body-friendliness needed for sustainable medical devices. To address these challenges, this study presents a novel, eco-friendly, electrically conductive double-layer nanocomposite bio-hydrogel developed using tragacanth gum (TG) and polyvinyl alcohol (PVA), enhanced with carboxylated graphene (Gr_F) and polypyrrole (PPy). The innovative double-layer design represents a significant advancement over single-layer hydrogels, demonstrating reduced impedance and a substantial increase in conductivity (up to 4.99 × 10⁵ times) at frequencies relevant to electrotherapy applications. Specifically, the tragacanth gum/polyvinyl alcohol/carboxylated graphene@polypyrrole (TPG@PPy) bio-hydrogel exhibited a AC conductivity enhancement of up to 1.5 times compared to the tragacanth gum/polyvinyl alcohol@polypyrrole (TP@PPy) bio-hydrogel at frequency of 80 Hz. Additionally, the material’s high biodegradability, with up to 49% mass loss over 60 days in soil, confirms environmental safety. These results show that the double-layer bio-hydrogel could be a better, eco-friendly option for future electrotherapy devices, making it different from current conductive hydrogels.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01226-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}