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Effects of the unit-cell size and arrangement on the compressive behaviors of lattice structures in powder bed fusion additive manufacturing 单元尺寸和排列对粉末床熔融增材制造中晶格结构抗压行为的影响
Results in Materials Pub Date : 2024-06-01 DOI: 10.1016/j.rinma.2024.100587
Kwang-Min Park , Young-Sook Roh , Bong-Chun Lee
{"title":"Effects of the unit-cell size and arrangement on the compressive behaviors of lattice structures in powder bed fusion additive manufacturing","authors":"Kwang-Min Park ,&nbsp;Young-Sook Roh ,&nbsp;Bong-Chun Lee","doi":"10.1016/j.rinma.2024.100587","DOIUrl":"https://doi.org/10.1016/j.rinma.2024.100587","url":null,"abstract":"<div><p>Lattice structures demonstrate a unique compressive behavior wherein the compressive strength increases and converges to a specific value as the number of unit-cell arrangements and overall dimensions of the lattice structure increase. In this study, the effects of the unit-cell size and cell arrangement on the compressive behavior of lattice structures were investigated to determine the convergence of compression characteristics at specific unit-cell configurations. Simple cubic lattice structures were designed and manufactured using powder bed fusion techniques. The lattice structures were characterized using universal testing machines. Experimental results revealed that the convergence of compressive strength was influenced by the size of the unit cell: the number of arrangements at which a specific compressive strength was reached increased as the unit-cell sizes decreased. Furthermore, specific convergence points were determined for different unit-cell sizes, providing valuable insights into the compressive strength behavior of lattice structures. This study emphasizes the significance of considering both unit-cell arrangements and overall dimensions when designing standard specimens for compression testing. Additionally, the methodology developed in this study can be applied to obtain an optimal configuration for desired strength characteristics.</p></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"22 ","pages":"Article 100587"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590048X2400061X/pdfft?md5=ce8aa6aaca3f5be0e1697253f7bdc2c4&pid=1-s2.0-S2590048X2400061X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141302506","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
Effects of sintering temperature on the physical, structural, mechanical and antimicrobial properties of extracted hydroxyapatite ceramics from Anabas testudineus bone and head scull for biomedical applications 烧结温度对用于生物医学应用的鲎骨和头骨提取羟基磷灰石陶瓷的物理、结构、机械和抗菌特性的影响
Results in Materials Pub Date : 2024-06-01 DOI: 10.1016/j.rinma.2024.100590
Md. Mostafa Kamal, Soumin Mahmud, Iftekhar Ahmed Plabon, Md. Abdul Kader, Md. Nurul Islam
{"title":"Effects of sintering temperature on the physical, structural, mechanical and antimicrobial properties of extracted hydroxyapatite ceramics from Anabas testudineus bone and head scull for biomedical applications","authors":"Md. Mostafa Kamal,&nbsp;Soumin Mahmud,&nbsp;Iftekhar Ahmed Plabon,&nbsp;Md. Abdul Kader,&nbsp;Md. Nurul Islam","doi":"10.1016/j.rinma.2024.100590","DOIUrl":"https://doi.org/10.1016/j.rinma.2024.100590","url":null,"abstract":"<div><p>In this experimental investigation, Hydroxyapatite (HAp) is extracted from bone and head scull of <em>Anabas testudineus</em> by thermal calcination at 800 °C for 5 h under ambient air conditions. Ceramic samples were prepared through compaction and followed by sintering at 1200 °C, 1250 °C, and 1300 °C temperatures for 2 h from the calcined HAp powder. Both the calcined powder and sintered ceramic samples were characterized using X-ray Diffraction (XRD), Energy dispersive X-ray spectroscopy (EDS) and Scanning Electron Microscopy (SEM) to explore the potentiality of the extracted ceramics for biomedical applications. Moreover, the elemental composition, phase structure, compressive strength, Vicker hardness, and antimicrobial characteristics of the ceramic samples have been investigated. The XRD analysis confirmed the presence of hydroxyapatite in both the calcined powder and ceramic samples. Various types of trace elements were observed in HAp ceramics including a noteworthy 1.57 atomic percent of magnesium (Mg). Additionally, the XRD spectrum indicated the existence of the β-tricalcium phosphate (TCP) phase. Upon sintering at a temperature of 1250 °C, the ceramic sample underwent a phase shift to α-TCP. Our results show that the phase transition has a significant effect on the crystallinity of HAp. The ceramics sample sintered at 1300 °C exhibited the highest compressive strength and Vicker Hardness due to its high relative density, well-packed grains, and larger particle size. The sintered sample did not exhibit notable zone of inhibition against <em>Escherichia coli</em> and <em>Staphylococcus aureus</em> bacteria.</p></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"22 ","pages":"Article 100590"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590048X24000645/pdfft?md5=9c8ccdfa23e0eec8082ee13506b15a88&pid=1-s2.0-S2590048X24000645-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141302505","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
Aims and Scope 目标和范围
Results in Materials Pub Date : 2024-06-01 DOI: 10.1016/S2590-048X(24)00065-7
{"title":"Aims and Scope","authors":"","doi":"10.1016/S2590-048X(24)00065-7","DOIUrl":"https://doi.org/10.1016/S2590-048X(24)00065-7","url":null,"abstract":"","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"22 ","pages":"Article 100591"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590048X24000657/pdfft?md5=e35e046bfd8fe67ecf184f5eed38e63c&pid=1-s2.0-S2590048X24000657-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141325813","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
The surface tension of boiling steel surfaces 沸腾钢表面的表面张力
Results in Materials Pub Date : 2024-06-01 DOI: 10.1016/j.rinma.2024.100583
Joerg Volpp , Yuji Sato , Masahiro Tsukamoto , Lewin Rathmann , Marius Möller , Samuel J. Clark , Kamel Fezzaa , Tim Radel , Kevin Klingbeil
{"title":"The surface tension of boiling steel surfaces","authors":"Joerg Volpp ,&nbsp;Yuji Sato ,&nbsp;Masahiro Tsukamoto ,&nbsp;Lewin Rathmann ,&nbsp;Marius Möller ,&nbsp;Samuel J. Clark ,&nbsp;Kamel Fezzaa ,&nbsp;Tim Radel ,&nbsp;Kevin Klingbeil","doi":"10.1016/j.rinma.2024.100583","DOIUrl":"https://doi.org/10.1016/j.rinma.2024.100583","url":null,"abstract":"<div><p>Material properties of metals and metal alloys at high temperatures are often unknown, but necessary to understand physical mechanisms for prediction and improvement of high temperature processes, such as laser beam technologies. Surface tension is an elementary property that was measured in this study above the boiling temperature of steel using a laser-induced vapor channel in a steel substrate and the extraction of the vapor channel diameter from in-situ X-ray observations. The measurement principle is based on the pressure balance inside the keyhole, where the recoil pressure from keyhole wall vaporization works against the surface tension pressure from the surrounding melt pool. An increase in surface tension at increasing temperatures above the boiling point was measured against theoretical expectations. In order to create the keyhole shapes measured, the surface tension must increase to counterbalance the increasing recoil pressure.</p></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"22 ","pages":"Article 100583"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590048X24000578/pdfft?md5=fe867eb532c91303bb8feca4c3c56e47&pid=1-s2.0-S2590048X24000578-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141291686","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 characterization of mulberry silk reinforced hybrid composite for enhanced application 用于增强应用的桑蚕丝增强混合复合材料的力学性能表征
Results in Materials Pub Date : 2024-06-01 DOI: 10.1016/j.rinma.2024.100588
Rajesh Saha , Syed Abrer Nafis Uddin Ahmed , Saquib Jamil , Md. Rezaul Karim , Adib Bin Rashid
{"title":"Mechanical characterization of mulberry silk reinforced hybrid composite for enhanced application","authors":"Rajesh Saha ,&nbsp;Syed Abrer Nafis Uddin Ahmed ,&nbsp;Saquib Jamil ,&nbsp;Md. Rezaul Karim ,&nbsp;Adib Bin Rashid","doi":"10.1016/j.rinma.2024.100588","DOIUrl":"https://doi.org/10.1016/j.rinma.2024.100588","url":null,"abstract":"<div><p>This research explores the effectiveness of two hybrid composites, pattern-1 (K-M-G-K-M-G-G-M-K) and pattern-2 (K-M-G-K-M-G-K-M-G), in experimental and simulation tests to create a cost-efficient hybrid composite. The composite includes Mulberry (M) silk (<em>Bombyx mori</em>) fibers reinforcing an epoxy resin-matrix hybrid with Kevlar (K) and Glass fiber (G). Both pattern-1 and pattern-2 are evaluated through experimental tests, and simulation tests are conducted to validate the findings. ANSYS Workbench is used for simulation tests to determine the best stacking sequence for protective gears, aerospace components, automotive parts, sport equipment and marine applications. The structural morphology of the hybrid composites is examined using scanning electron microscope (SEM). The results show that pattern-1 performs better than pattern-2 in various experimental and simulation tests, with a wider plastic zone in the tensile test stress-strain curve, greater tensile strength (73 MPa and 67.923 MPa), higher load-bearing capacity, and enhanced ductility. Pattern-1 also demonstrates improved performance in flexural strength (45.35 MPa and 71.474 MPa) and impact strength (6 J and 5.4898 J). Simulation results confirm that pattern-1 is superior to pattern-2 in terms of energy absorption and resistance to bullet penetration.</p></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"22 ","pages":"Article 100588"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590048X24000621/pdfft?md5=565c6f6b071c511fcb16319df9faa8fc&pid=1-s2.0-S2590048X24000621-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141291687","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
Boosting the in-vitro effectiveness of photodynamic therapy on MCF-7 breast cancer cells with encapsulated malachite green by silica nanoparticles 用二氧化硅纳米颗粒封装孔雀石绿提高光动力疗法对 MCF-7 乳腺癌细胞的体外疗效
Results in Materials Pub Date : 2024-05-27 DOI: 10.1016/j.rinma.2024.100582
Khaled Aljarrah , M-Ali H. Al-Akhras , Ghaseb N. Makhadmeh , Tariq AlZoubi , Abdulsalam Abuelsamen , Samer H. Zyoud , Ahmad M. AL-Diabat , Osama Abu Noqta , Azlan Abdulaziz , Orhan Donmez
{"title":"Boosting the in-vitro effectiveness of photodynamic therapy on MCF-7 breast cancer cells with encapsulated malachite green by silica nanoparticles","authors":"Khaled Aljarrah ,&nbsp;M-Ali H. Al-Akhras ,&nbsp;Ghaseb N. Makhadmeh ,&nbsp;Tariq AlZoubi ,&nbsp;Abdulsalam Abuelsamen ,&nbsp;Samer H. Zyoud ,&nbsp;Ahmad M. AL-Diabat ,&nbsp;Osama Abu Noqta ,&nbsp;Azlan Abdulaziz ,&nbsp;Orhan Donmez","doi":"10.1016/j.rinma.2024.100582","DOIUrl":"https://doi.org/10.1016/j.rinma.2024.100582","url":null,"abstract":"<div><p>Photodynamic therapy (PDT) is a promising cancer treatment strategy utilizing photosensitizers (PS) and light to generate singlet oxygen, with Malachite Green (MG) showing high singlet oxygen quantum yield. Effective delivery of MG to the target tissue remains a key challenge. Encapsulation techniques have been investigated to improve PS delivery, minimize PS leakage, inhibit diaphorase-induced reduction, and mitigate PS-related toxicity. Silica nanoparticles (SiNPs) offer favorable characteristics for drug delivery in PDT and serve as promising delivery carriers. In this study, SiNPs were synthesized and employed as carriers for MG. The size and shape of nanoparticles were determined using Transmission Electron Microscopy (TEM). A range of concentrations of MG were applied to MCF-7 breast cancer cells in order to evaluate the cytotoxicity of both naked and encapsulated MG. This helped identify the most effective concentrations and exposure durations required to induce damage under red laser light (Intensity ∼110 mW/cm<sup>2</sup>). The results indicated that SiNPs-encapsulated MG exhibited superior efficacy compared to naked MG, with a concentration efficacy increase of +50 % and an exposure time efficacy increase of +45 %. This underlines the enhanced capability of encapsulated MG to eliminate MCF-7 cells when compared to naked MG. The application of synthesized SiNPs for MG delivery improved the effectiveness of photodynamic therapy by augmenting MG bioavailability in target cells.</p></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"22 ","pages":"Article 100582"},"PeriodicalIF":0.0,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590048X24000566/pdfft?md5=404e815a3e107d6b6157fd351d3bb99d&pid=1-s2.0-S2590048X24000566-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141164485","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
Improved photocatalytic activity of (Ni, Mn) co-doped ZnO nanoparticles prepared via green synthesis route using orange peel extract 利用橘皮提取物通过绿色合成路线制备的(镍、锰)共掺杂氧化锌纳米粒子的光催化活性提高了
Results in Materials Pub Date : 2024-05-22 DOI: 10.1016/j.rinma.2024.100581
A.K.M. Ahsanul Habib , Kazi Mamunur Rahman Rifat , Mohammad Ebne Kabir , Jawad Noor Khan , S.M. Nasim Rokon , Md Ahasanur Rabbi
{"title":"Improved photocatalytic activity of (Ni, Mn) co-doped ZnO nanoparticles prepared via green synthesis route using orange peel extract","authors":"A.K.M. Ahsanul Habib ,&nbsp;Kazi Mamunur Rahman Rifat ,&nbsp;Mohammad Ebne Kabir ,&nbsp;Jawad Noor Khan ,&nbsp;S.M. Nasim Rokon ,&nbsp;Md Ahasanur Rabbi","doi":"10.1016/j.rinma.2024.100581","DOIUrl":"https://doi.org/10.1016/j.rinma.2024.100581","url":null,"abstract":"<div><p>(Ni–Mn) co-doped ZnO nanoparticles were synthesized for different doping concentrations (1 %, 2 %, and 3 %) and compared with the purely synthesized ZnO nanoparticles. Green synthesis route was followed to fabricate both pure and co-doped ZnO nanoparticles and the orange peel extract was used as the reducing agent. The main objectives of this research were to reduce the use of toxic chemicals and develop an eco-friendly green route for both pure and doped ZnO nanoparticle synthesis. Additionally, the co-doping effect on the photocatalytic activity was also observed. The synthesized particles were extensively characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) analysis, Fourier Transform Infrared spectroscopy (FTIR), and Ultraviolet–visible (UV–vis) spectroscopy. XRD analysis confirmed the exitance of ZnO nanoparticles with wurtzite structure. No extra peaks were found for the co-doped sample confirming the successful doping. The crystallite size decreased after doping and the range varied from 36 nm to 35 nm with increasing doping concentration. SEM analysis revealed the average particle size ranging from 66.42 nm to 37.52 nm with increasing doping concentration, the particle was irregular in shape, and agglomeration was observed. The FTIR data unveiled the existence of Ni–O, Mn–O, and Zn–O bands in the synthesized materials. The band gap of the NPs was determined from the UV–Visible spectroscopy analysis which varied from 3.30 eV to 2.71 eV with increasing doping concentration. The photocatalytic activity significantly improved with the increment of the doping concentration. The 2 % and 3 % doped samples degraded almost 97 % of the methylene blue dye at 30 min.</p></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"22 ","pages":"Article 100581"},"PeriodicalIF":0.0,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590048X24000554/pdfft?md5=b670b673518b3553ddfc33c3e3f136e6&pid=1-s2.0-S2590048X24000554-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141090145","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
Comparison of fatigue life behavior between 4-point and uniaxial loading for L-PBF Ti–6Al–4V after HIP treatments HIP 处理后 L-PBF Ti-6Al-4V 的四点加载和单轴加载疲劳寿命特性比较
Results in Materials Pub Date : 2024-05-18 DOI: 10.1016/j.rinma.2024.100579
D.A. Ariza , E. Arrieta , C. Banuelos , B.J. Colón , L.E. Murr , R.B. Wicker , C. Beamer , F. Medina
{"title":"Comparison of fatigue life behavior between 4-point and uniaxial loading for L-PBF Ti–6Al–4V after HIP treatments","authors":"D.A. Ariza ,&nbsp;E. Arrieta ,&nbsp;C. Banuelos ,&nbsp;B.J. Colón ,&nbsp;L.E. Murr ,&nbsp;R.B. Wicker ,&nbsp;C. Beamer ,&nbsp;F. Medina","doi":"10.1016/j.rinma.2024.100579","DOIUrl":"https://doi.org/10.1016/j.rinma.2024.100579","url":null,"abstract":"<div><p>The present study investigated the effects of Hot Isostatic Pressing (HIP) on the fatigue performance of Laser Powder Bed Fusion (L-PBF) Ti–6Al–4V alloy under both 4-point bending and uniaxial testing. Three HIP-cycles were examined: standard, low temperature/high pressure (LTHP), and super beta. Moreover, an annealed heat treatment group was incorporated to compare against the HIP groups. The material microstructure was analyzed and compared across the heat treatments during the study, which showed the presence of α′ martensites, α+β Widmanstätten, and coarse equiaxed grains. Similarly, tensile and hardness testing were implemented to study the mechanical properties, where due to the effects of the HIP treatments, higher ductility but lower hardness values were recorded. Furthermore, fracture morphologies and stress-life (cycles-to-failure) (S–N) curves of the Ti–6Al–4V specimens concerning the fatigue behavior were analyzed. The HIP treatment groups behaved similarly during 4-point bending and uniaxial testing, with the LTHP obtaining a superior fatigue life behavior, followed by the standard and super beta HIP groups. In addition, the efficacy of HIP to reduce pores showed better results in the 4-point bending specimens, leading to few defects as fatigue initiators in contrast to the uniaxial specimens. Fractography results suggested that defects and microstructural features acting as fatigue crack initiators (FCI) govern the fracture behavior of uniaxial specimens. In contrast, only the presence of microstructural features controls the 4-point bending failure behavior.</p></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"22 ","pages":"Article 100579"},"PeriodicalIF":0.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590048X24000530/pdfft?md5=38d37614e69a09293c65f13f2138b2ca&pid=1-s2.0-S2590048X24000530-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141073169","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
Fabrication of antibacterial bone scaffold based on carbonate-substituted hydroxyapatite containing magnesium from black sea urchin (Arbacia lixula) shells reinforced with polyvinyl alcohol and gelatin 用聚乙烯醇和明胶增强黑海胆(Arbacia lixula)贝壳中的碳酸盐取代羟基磷灰石(含镁)制作抗菌骨支架
Results in Materials Pub Date : 2024-05-15 DOI: 10.1016/j.rinma.2024.100580
Muhammad Amir Jamilludin , Juliasih Partini , Dwi Liliek Kusindarta , Yusril Yusuf
{"title":"Fabrication of antibacterial bone scaffold based on carbonate-substituted hydroxyapatite containing magnesium from black sea urchin (Arbacia lixula) shells reinforced with polyvinyl alcohol and gelatin","authors":"Muhammad Amir Jamilludin ,&nbsp;Juliasih Partini ,&nbsp;Dwi Liliek Kusindarta ,&nbsp;Yusril Yusuf","doi":"10.1016/j.rinma.2024.100580","DOIUrl":"10.1016/j.rinma.2024.100580","url":null,"abstract":"<div><p>Carbonate-substituted hydroxyapatite containing magnesium (Mg–C-HAp) was introduced through dissolution-precipitation treatment of hydroxyapatite containing magnesium (Mg-HAp) based on a black sea urchin (<em>arbacia lixula</em>) shells as novel biogenic materials. Based on chemical composition analysis, the Mg–C-HAp formed A- and B-type CHAp, which contained high carbonate ions. The Ca/P ratio of Mg–C-HAp was 1.707, very close to the biological bone apatite of 1.71. The Mg content in Mg–C-HAp was also relatively high, with the Mg/(Ca + Mg) ratio of 0.139, which is beneficial for antibacterial agents. The morphology of Mg–C-HAp showed particles with nanosize that provide a large surface area of ion promotion. The antibacterial test revealed that the Mg–C-HAp performed high antibacterial activity against <em>Pseudomonas aeruginosa</em>. The Mg–C-HAp-based porous scaffolds were then fabricated using the freeze-drying method with variations of polyvinyl alcohol (PVA) and gelatin fraction. According to the physicochemical analysis, the addition of PVA and gelatin in the scaffold structure decreased the crystallinity of the Mg–C-HAp/PVA/Gel scaffold. This lower crystallinity indicates high biodegradability, which is good for new bone growth. The macropores of the Mg–C-HAp/PVA/Gel scaffold were appropriate for new bone and blood vessel formation. The micropores of the Mg–C-HAp/PVA/Gel scaffold can be a medium for cells to grow. The microporosity of the Mg–C-HAp/PVA/Gel scaffold was also suitable for cell nutrient promotion. The compressive strength of the Mg–C-HAp/PVA/Gel scaffold was sufficient for bone regeneration. The Mg–C-HAp/PVA/Gel scaffold demonstrated high antibacterial activity against <em>P. aeruginosa</em>, so the Mg–C-HAp/PVA/Gel scaffold can maintain the role of Mg and carbonate content for antibacterial purposes. The good physicochemical, mechanical, and antibacterial properties of the Mg–C-HAp/PVA/Gel scaffold represented its suitable characteristics for antibacterial bone scaffolds.</p></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"22 ","pages":"Article 100580"},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590048X24000542/pdfft?md5=007a08a74afe0b46efe98b0ec6423ac2&pid=1-s2.0-S2590048X24000542-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141049006","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
Effect of multifunction cavitation on microstructure and plane bending fatigue properties of low-alloy steel 多功能空化对低合金钢微观结构和平面弯曲疲劳性能的影响
Results in Materials Pub Date : 2024-05-10 DOI: 10.1016/j.rinma.2024.100578
Masataka Ijiri , Takayuki Ogi , Toshihiko Yoshimura , Kenta Minamizawa , Shoichi Kikuchi
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