Composites Part A: Applied Science and Manufacturing最新文献

Micro-void nucleation at fiber-tips within the microstructure of additively manufactured polymer composites bead 增材制造聚合物复合材料珠头微结构中纤维尖端微空洞成核

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2024-11-29 DOI: 10.1016/j.compositesa.2024.108629

Aigbe Awenlimobor, Neshat Sayah, Douglas E. Smith

{"title":"Micro-void nucleation at fiber-tips within the microstructure of additively manufactured polymer composites bead","authors":"Aigbe Awenlimobor, Neshat Sayah, Douglas E. Smith","doi":"10.1016/j.compositesa.2024.108629","DOIUrl":"10.1016/j.compositesa.2024.108629","url":null,"abstract":"<div><div>The presence of voids within the microstructure of short carbon fiber polymer composites produced by additive manufacturing (AM) technology are known to alter the expected material behavior that impair part performance. Previous research efforts aimed at understanding the formation mechanisms of these micro-voids during the polymer extrusion/deposition process have not kept up with the advancement of this AM technology. The present study investigates the phenomenon of micro-void nucleation at the fiber/matrix interface, especially those that form at fiber tips, by characterizing the microstructural configuration of a 13 % carbon fiber filled ABS polymer composite print bead specimen using 3D X-ray micro computed tomography image acquisition and analysis. The results reveal a high level of micro-voids segregation at the ends of fibers that are relatively larger in size and less spherical as compared to micro-voids isolated within the ABS matrix. Additionally, by simulating the hydrostatic flow-field pressure distribution surrounding a single rigid ellipsoidal fibre in colloidal suspension using Jeffery’s model equations, we show that the pressure drops to a critical value at the fibre tips where the micro-voids nucleation is experimentally observed to occur. The study helps to improve our understanding of the potential mechanisms that may be responsible for micro-void development within beads printed with extrusion/deposition AM.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"190 ","pages":"Article 108629"},"PeriodicalIF":8.1,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel and facile method for the synthesis of rGO/ZnO nanocomposite and its versatile use in water treatment 一种新型简便的氧化石墨烯/氧化锌纳米复合材料的合成及其在水处理中的广泛应用

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2024-11-29 DOI: 10.1016/j.compositesa.2024.108620

Reshma S Philip, Aparna N, Meril Mathew

{"title":"A novel and facile method for the synthesis of rGO/ZnO nanocomposite and its versatile use in water treatment","authors":"Reshma S Philip, Aparna N, Meril Mathew","doi":"10.1016/j.compositesa.2024.108620","DOIUrl":"10.1016/j.compositesa.2024.108620","url":null,"abstract":"<div><div>We introduce a novel, rapid, and environmentally friendly method for synthesising reduced graphene oxide (rGO)/ZnO nanocomposite. This single-step synthesis involves the pyrolytic decomposition of sucrose to produce rGO, simultaneously with zinc acetate to produce the rGO/ZnO nanocomposite. Unlike conventional methods, this approach is distinguished by its environmental sustainability, avoiding the use of toxic chemicals and generating no harmful byproducts. This method advances the development of sustainable technologies by providing a green alternative for the cost-effective production of rGO/ZnO composites from inexpensive precursors. The process enables bulk production within minutes, making it suitable for industrial-scale applications. Various characterisation techniques confirmed the successful formation of rGO and rGO/ZnO nanocomposites. The materials were then evaluated for their efficacy as a comprehensive water purification solution, demonstrating effectiveness in heavy metal removal, photodegradation of organic pollutants, and bacterial disinfection.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"189 ","pages":"Article 108620"},"PeriodicalIF":8.1,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solvent-free mechanochemistry induced one-pot scalable fabrication of phosphorus wrapped keratin and its application as a synergistic flame retardant in epoxy resin 无溶剂机械化学诱导单锅可伸缩制备磷包覆角蛋白及其在环氧树脂中的协同阻燃应用

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2024-11-28 DOI: 10.1016/j.compositesa.2024.108622

Kaiwen Deng , Aozhe Zhang , Xiaming Feng , Hongyu Yang , Chaojun Wan , Cheng Yan

{"title":"Solvent-free mechanochemistry induced one-pot scalable fabrication of phosphorus wrapped keratin and its application as a synergistic flame retardant in epoxy resin","authors":"Kaiwen Deng , Aozhe Zhang , Xiaming Feng , Hongyu Yang , Chaojun Wan , Cheng Yan","doi":"10.1016/j.compositesa.2024.108622","DOIUrl":"10.1016/j.compositesa.2024.108622","url":null,"abstract":"<div><div>Here we synthesized a biomass phosphorus-wrapped wool keratin flame retardant using a one-pot sustainable ball milling method. While many bio-based flame retardants have been developed, most involve organic solvents and complex modification processes. Our study focuses on a solvent-free approach to develop an effective flame retardant through the covalently phosphating modification of keratin recycled from waste wool. With 5 wt% addition, the epoxy resin composites achieved V-0 rating, showing a 46.7% reduction in total heat release and a 23.8% reduction in total smoke production. The flame retardant effectively quenches free radicals in the gas phase and catalyzes char formation in the condensed phase through a synergistic phosphorus-nitrogen effect. This study underscores the significant potential of recycling biomass waste wool keratin for flame retardant applications via a solvent-free and one-pot high-energy ball milling method, offering valuable insights for green chemistry and sustainable low-carbon development.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"189 ","pages":"Article 108622"},"PeriodicalIF":8.1,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reactive extrusion of frontally polymerizing continuous carbon fiber reinforced polymer composites 正面聚合连续碳纤维增强聚合物复合材料的反应挤出

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2024-11-28 DOI: 10.1016/j.compositesa.2024.108609

Nadim S. Hmeidat , Michael Zakoworotny , Yun Seong Kim , Thien B. Le , Gavin DeBrun , Rohan Shah , Jacob J. Lessard , Jeffery S. Moore , Jeffery W. Baur , Philippe H. Geubelle , Nancy R. Sottos , Sameh H. Tawfick

{"title":"Reactive extrusion of frontally polymerizing continuous carbon fiber reinforced polymer composites","authors":"Nadim S. Hmeidat , Michael Zakoworotny , Yun Seong Kim , Thien B. Le , Gavin DeBrun , Rohan Shah , Jacob J. Lessard , Jeffery S. Moore , Jeffery W. Baur , Philippe H. Geubelle , Nancy R. Sottos , Sameh H. Tawfick","doi":"10.1016/j.compositesa.2024.108609","DOIUrl":"10.1016/j.compositesa.2024.108609","url":null,"abstract":"<div><div>The manufacturing of carbon fiber-reinforced polymer (CFRP) composites demands rapid and energy-efficient strategies. Frontal polymerization (FP) enables the manufacturing of CFRP using dicyclopentadiene (DCPD) thermoset polymer which meets these requirements. In this work, we introduce reactive extrusion of CFRP (RE-CFRP), where two rollers provide localized heat and pressure to sustain the curing reaction and the consolidation of a continuous carbon fiber tow pre-impregnated with DCPD. We study the effect of the extrusion speed, temperature, and compaction force on the properties of the produced CFRP. Mechanical testing confirms that the resulting fiber volume fraction and the elastic modulus are similar to bulk cured tows. A homogenized thermo-chemical model is developed to study the effect of the process parameters on the polymerization reaction. The process produces hollow woven composite tubes directly via extrusion and in situ curing. Overall, this process offers advantages in curing, tooling, speed, and energy.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"190 ","pages":"Article 108609"},"PeriodicalIF":8.1,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759337","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}

引用次数: 0

Interlaminar toughening and self-healing mechanism for hard-and-soft layered composite laminates 软硬层状复合材料层间增韧及自愈机制

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2024-11-28 DOI: 10.1016/j.compositesa.2024.108623

Xiaoyu Zhang , Guojun Zhao , Jin Lai , T.X. Yu , Xin Zhang

{"title":"Interlaminar toughening and self-healing mechanism for hard-and-soft layered composite laminates","authors":"Xiaoyu Zhang , Guojun Zhao , Jin Lai , T.X. Yu , Xin Zhang","doi":"10.1016/j.compositesa.2024.108623","DOIUrl":"10.1016/j.compositesa.2024.108623","url":null,"abstract":"<div><div>This paper finds a simple and cost-effective design to create high interlaminar toughness and self-healing Euplectella Aspergillum based bio-inspired composite laminates with thermoplastic polymer poly(ethylene-co-methacrylic acid) (EMAA). Three different configuration strategies containing hard/soft structures are proposed and mode I interlaminar toughness is determined to investigate the toughening effect and self-healing behavior. The results show that configuration and fiber types have great influence on toughening and self-healing efficiency. The novel configuration can achieve an improvement of over 600% in toughness for carbon fiber reinforced plastic (CFRP) and close to 100% for healing efficiency in the case of glass fiber reinforced plastic (GFRP) laminates. All the proposed configurations eliminate unstable delamination crack propagation process observed in CFRP woven laminates. In addition, repeated self-healing behavior is studied and self-healing efficiency remains stable after three damage-healing cycles. This study reveals toughening and self-healing behaviors of different configurations and provides novel strategies for laminate design.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"189 ","pages":"Article 108623"},"PeriodicalIF":8.1,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of two phosphonamide flame retardants derived from biomass pyridine on flame retardancy and flame-retardant mechanism of Polyamide 6 两种生物质吡啶类磷酰胺阻燃剂对聚酰胺6的阻燃性能及阻燃机理的影响

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2024-11-26 DOI: 10.1016/j.compositesa.2024.108616

Yanyan Li , Yikang Wang , Li Cui , Lie Zhao , Youyi Tian , Jiajia Shen , Junfeng Zhang , Huawei Xu , Meifang Zhu

{"title":"Effects of two phosphonamide flame retardants derived from biomass pyridine on flame retardancy and flame-retardant mechanism of Polyamide 6","authors":"Yanyan Li , Yikang Wang , Li Cui , Lie Zhao , Youyi Tian , Jiajia Shen , Junfeng Zhang , Huawei Xu , Meifang Zhu","doi":"10.1016/j.compositesa.2024.108616","DOIUrl":"10.1016/j.compositesa.2024.108616","url":null,"abstract":"<div><div>Achieving favorable flame retardancy in polyamide 6 (PA6) without compromising its mechanical performance remains a challenge, with a notable gap in understanding the influence of flame-retardant structure on PA6 properties and mechanisms. In this study, two biomass-derived phosphonamide flame retardants, P,P-diphenyl-N-(pyridin-3-yl) phosphonamide (DPDA) and P,P-Diphenoxy-N-(pyridin-3-yl) phosphonamide (DPPA), were synthesized and incorporated into PA6 to develop flame retardant composites. Results demonstrated that the PA6-9DPDA, containing a P-C bond, achieved a UL-94 V-0 rating with a Limiting Oxygen Index (LOI) of 27.9 %, while PA6-9DPPA, containing a P-O-C bond, maintained the UL-94 V-2 rating of pure PA6 but with an increased LOI of 29.4 %. DPPA exhibited a more favorable impact than DPDA on enhancing the tensile performance of PA6. Mechanisms indicated that DPDA primarily operates through vapor phase flame retardancy, whereas DPPA utilizes condensed phase flame retardancy. Overall, this study proposes a sustainable approach for fabricating PA6 composites with enhanced comprehensive performance.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"189 ","pages":"Article 108616"},"PeriodicalIF":8.1,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of thermoplastic fibre-epoxy adhesion on the interlaminar fracture toughness of interleaved polymer composites 热塑性纤维-环氧树脂黏附对交织聚合物复合材料层间断裂韧性的影响

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2024-11-26 DOI: 10.1016/j.compositesa.2024.108619

Zaide Saka Dinç , Yahya Öz , Prasad Potluri , William W. Sampson , Hüseyin Aksel Eren

{"title":"Influence of thermoplastic fibre-epoxy adhesion on the interlaminar fracture toughness of interleaved polymer composites","authors":"Zaide Saka Dinç , Yahya Öz , Prasad Potluri , William W. Sampson , Hüseyin Aksel Eren","doi":"10.1016/j.compositesa.2024.108619","DOIUrl":"10.1016/j.compositesa.2024.108619","url":null,"abstract":"<div><div>We present an experimental study using surface modification of polyetherimide (PEI) and polyphenylene sulfide (PPS) nonwoven fibrous veils to probe their performance as interleaves to improve the interlaminar fracture toughness (IFT) of carbon fibre-epoxy composites. Veil fibre surfaces were modified with ozone and a post-treatment with ultraviolet (UV) light (ozone + UV). From surface characterisation, mechanical testing of composites and fractography we show that for the PEI veil, these surface modifications resulted in a decreased mode I IFT attributable to decreased fibre-epoxy adhesion and hence, fibre/matrix debonding. In contrast, an increase in sulfinyl functional groups on the surface of PPS fibres after ozonation was observed alongside an increase in PPS veil-epoxy adhesion. The strong bond between fibre–matrix resisted crack propagation across veils, compelling the crack to divert through weaker carbon fibre-epoxy interfaces in adjacent layers. The mode I fracture toughness during crack propagation G<sub>Iprop</sub> decreased, confirming the level of veil-epoxy adhesion to be a significant contributor to the IFT that can be associated with specific functional groups on fibre surfaces.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"189 ","pages":"Article 108619"},"PeriodicalIF":8.1,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bioactive glass empowered growable composite resin enabling a seamless dental caries filling 生物活性玻璃增强可生长复合树脂，使龋齿无缝填充

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2024-11-26 DOI: 10.1016/j.compositesa.2024.108621

Baokui Li , Jilin Wu , Yanmei Dong , Dong Qiu

{"title":"Bioactive glass empowered growable composite resin enabling a seamless dental caries filling","authors":"Baokui Li , Jilin Wu , Yanmei Dong , Dong Qiu","doi":"10.1016/j.compositesa.2024.108621","DOIUrl":"10.1016/j.compositesa.2024.108621","url":null,"abstract":"<div><div>Direct composite resin restoration is the primary treatment for dental caries. However, the polymerization contraction of resin usually results in microgap formation at the resin/dentin interface, which inevitably accommodates cariogenic bacteria and their biofilm, thus eventually leading to secondary caries, one of the most important causes accounting for the failure of dental restoration. Inhibiting cariogenic bacteria adhesion and promoting dentin remineralization are common approaches to prevent secondary caries. However, the former is prone to cause unexpected side-effects and the latter can only temporarily slow down, but not completely prevent the development of secondary caries. Therefore, strategies to avoid these microgaps, thus preventing secondary caries are highly demanding. Here, we developed a growable dental composite resin, which is characterized by its fast formation of large quantity of hydroxyapatite upon reacting with physiological medium, for example, saliva or body fluid, empowered by bioactive glass fillers. The newly formed hydroxyapatite provides a perfect sealing of resin/dentin microgaps, successfully achieving a seamless dental caries filling. The moderate hydrophobic modification on the surface of bioactive glass enables the composite resin to possess excellent mechanical properties, thereby overcoming the contradiction between their mineralization capability and interfacial compatibility. This work provides an innovative and facile approach to tackle the challenge of secondary dental caries, thus may have immediate clinical significance.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"189 ","pages":"Article 108621"},"PeriodicalIF":8.1,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Role of fiber clustering and resin bleeding on voids and evolution of fiber volume fraction for additively manufactured continuous carbon fiber thermoset composites with dual-cure resins 增材制造双固化连续碳纤维热固性复合材料中纤维聚集和树脂渗出对空隙的影响及纤维体积分数的演变

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2024-11-24 DOI: 10.1016/j.compositesa.2024.108601

Shaharear Md Emtiaz , Maximilian Pitto , Pavel Šimáček , Suresh G Advani

{"title":"Role of fiber clustering and resin bleeding on voids and evolution of fiber volume fraction for additively manufactured continuous carbon fiber thermoset composites with dual-cure resins","authors":"Shaharear Md Emtiaz , Maximilian Pitto , Pavel Šimáček , Suresh G Advani","doi":"10.1016/j.compositesa.2024.108601","DOIUrl":"10.1016/j.compositesa.2024.108601","url":null,"abstract":"<div><div>Additive manufacturing of continuous fiber-reinforced thermosets is enhanced by producing a core–shell structured tow, where admixed UV and thermal cure resin (dual-cure) forms an interpenetrating polymer network. Such material can be produced by rapid interlayer curing assisted (RICA) 3D printing, a process that impregnates a fiber tow with epoxy and then applies a dual-cure resin coating hardened by UV exposure. A challenge of this novel process is the fiber volume fraction control and void content minimization after dual-cure coating, UV curing and consolidation. Here we reveal towpreg properties at RICA processing points of interest via a continuous model setup. We also put in place metering of the resin during the process which increased the fiber volume fraction and provided better layer thickness control. Two new numerical models were introduced that investigate (i) the void formation during impregnation of clustered carbon fibers and (ii) void filling accompanied by resin bleeding from core-shell structured tows during compaction. Experimental results revealed clusters in the carbon fiber tow during roller-assisted epoxy impregnation, with a void content between 3% and 5%. The clustering model showed that large clusters entrapped bigger voids. After consolidation, void content was reduced to 2.1–2.7% when the shell only contained UV resin, thanks to resin entrapment by the cured shell. Resin bled from the dual-cure shell, which reduced void filling but increased the fiber volume fraction from 0.29 up to 0.37. Ultimately, this work demonstrates that the dual-cure coating mixture utilized for RICA 3D printing has an effect on the final void content that is amplified during high-speed consolidation and reduced when the incoming initial voids are small.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"189 ","pages":"Article 108601"},"PeriodicalIF":8.1,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural and material double mechanical enhancement of HAp scaffolds promote bone defect regeneration HAp 支架的结构和材料双重机械强化促进骨缺损再生

IF 8.1 2区材料科学

Composites Part A: Applied Science and Manufacturing Pub Date : 2024-11-23 DOI: 10.1016/j.compositesa.2024.108600

Xingyu Gui , Boqing Zhang , Yuxiang Qin , Haoyuan Lei , Xiuwen Xia , Yiyang Li , Haoxiang Lei , Xuerui Zhou , Yanfei Tan , Zhihong Dong , Qi You , Changchun Zhou , Yujiang Fan

{"title":"Structural and material double mechanical enhancement of HAp scaffolds promote bone defect regeneration","authors":"Xingyu Gui , Boqing Zhang , Yuxiang Qin , Haoyuan Lei , Xiuwen Xia , Yiyang Li , Haoxiang Lei , Xuerui Zhou , Yanfei Tan , Zhihong Dong , Qi You , Changchun Zhou , Yujiang Fan","doi":"10.1016/j.compositesa.2024.108600","DOIUrl":"10.1016/j.compositesa.2024.108600","url":null,"abstract":"<div><div>Critical bone defects caused by trauma, bone tumors, and infections are still challenges in clinical surgery. Digital light processing printing of hydroxyapatite (HAp) scaffolds can fabricate high-resolution personalized bone repair scaffolds. However, creating load-bearing bone regeneration HAp scaffolds with satisfactory mechanical property remain challenging. This study investigated the enhancement of the HAp scaffold mechanical properties from both structural and material perspectives. Structurally, the diamond structure model was optimized to Triply Periodic Minimal Surface structures, increasing the compressive strength of scaffolds from 2.2 to 7.2 MPa. Material-wise, ZnO was incorporated as second-phase particle, improved the compressive strength of HAp scaffolds from 7.2 to 13.7 MPa. Additionally, the incorporation of zinc ions enhanced the bioactivity of the HAp scaffolds. Animal mechanical testing revealed that the enhanced scaffolds effectively supported load-bearing. The HAp/ZnO-TPMS scaffolds exhibited excellent mechanical properties and promoted cellular osteogenic differentiation, showing potential for clinical development and application.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"189 ","pages":"Article 108600"},"PeriodicalIF":8.1,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142703517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0