Biosurface and Biotribology最新文献_第8页

Interactions between hyaluronic acid and CoCrMo alloy surface in simulated synovial fluids 模拟滑液中透明质酸与CoCrMo合金表面的相互作用

Biosurface and Biotribology Pub Date : 2021-10-03 DOI: 10.1049/bsb2.12027

Simona Radice, Gretchen Tibbits, Alex Y. W. Lin, Haluk Beyenal, Markus A. Wimmer

{"title":"Interactions between hyaluronic acid and CoCrMo alloy surface in simulated synovial fluids","authors":"Simona Radice, Gretchen Tibbits, Alex Y. W. Lin, Haluk Beyenal, Markus A. Wimmer","doi":"10.1049/bsb2.12027","DOIUrl":"10.1049/bsb2.12027","url":null,"abstract":"The performance of CoCrMo alloy in orthopaedic implants may be unfavourably affected by hyaluronic acid (HA) in synovial fluid. In this study, the authors aimed to understand the interactions between HA and CoCrMo using dedicated electrochemical experiments and surface analyses. A sequence of electrochemical measurements (open-circuit potential, linear polarization resistance, potentiodynamic and potentiostatic polarizations) was run on LC-CoCrMo (ASTM F1537) in Dulbecco's phosphate-buffered saline (DPBS) solution with and without HA and in DPBS mixed with newborn calf serum (NCS) and HA, partially under simultaneous recording of surface pH using custom-made microelectrodes. Samples were analysed by optical and electron microscopy. HA had no significant impact on the corrosion potential of CoCrMo alloy (ECORR = −173 ± 8, −211 ± 16, and −254 ± 30 mVAg/AgCl, in DPBS, DPBS + HA, and DPBS + NCS + HA, respectively). Average current density values at the transpassive domain were double in DPBS compared to DPBS + HA and DPBS + NCS + HA. At potentials above +0.6 VAg/AgCl, surface pH values decreased from 7.5 to 6.5 in DPBS and from 7.5 to below 4 in DPBS + HA. In conclusion, the presence of HA did not compromise the corrosion resistance of CoCrMo alloy at free potential, but it enhanced acidic conditions at the near surface under anodic-applied potential in the transpassive domain.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"7 4","pages":"239-250"},"PeriodicalIF":0.0,"publicationDate":"2021-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12027","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49306217","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

From rock-boring organisms to tunnel boring machines: A new rock breaking technology by bioinspiration 从钻岩生物到隧道掘进机:生物灵感破岩新技术

Biosurface and Biotribology Pub Date : 2021-09-17 DOI: 10.1049/bsb2.12025

Jing Zheng, Zhixin Wu, Jiahui Nie, Lei Lei, Zhongrong Zhou, Jianbin Li

{"title":"From rock-boring organisms to tunnel boring machines: A new rock breaking technology by bioinspiration","authors":"Jing Zheng, Zhixin Wu, Jiahui Nie, Lei Lei, Zhongrong Zhou, Jianbin Li","doi":"10.1049/bsb2.12025","DOIUrl":"10.1049/bsb2.12025","url":null,"abstract":"The purpose of this study is to achieve better understanding of associated mechanisms and to recommend and identify new strategies to develop new rock breaking technology for Tunnel Boring Machines (TBMs). Tunnel Boring Machine tunnelling mainly depends upon the rock breakage caused by cutters moving on a rock surface in a rolling and sliding motion while under the action of thrust force. The rock breaking behaviour is controlled by the mechanical interaction between the cutters and the rock. Due to the high hardness and high abrasiveness of rock, the cutters have to work under very high thrust force and suffer heavy-load-impact and abrasive wear, causing serious wear and low rock breaking efficiency. Rock-boring organisms exist in nature, which achieve drilling and/or tunnelling in rocks through a tribochemical interaction. This phenomenon is called bioerosion and the organisms are natural ‘TBMs’ to some degree. In this study, the interaction between TBM cutters and rock is presented, and current measures to improve cutter wear and rock breaking efficiency and their limitations are reported. Then, the connotation, mechanism and typical cases of bioerosion are presented. Finally, inspired by bioerosion, a new chemically assisted rock breaking technology is proposed for TBMs.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"7 4","pages":"233-238"},"PeriodicalIF":0.0,"publicationDate":"2021-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57691702","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 co-effect of microstructures and mucus on the adhesion of abalone from a mechanical perspective 从力学角度看微观结构与黏液对鲍鱼黏附的共同影响

Biosurface and Biotribology Pub Date : 2021-08-23 DOI: 10.1049/bsb2.12024

Jing Li, Chuandong Ma, Jun Liu, Xiangwei Dong, Jianlin Liu

引用次数: 5

Transient mixed lubrication model of the human knee implant 人体膝关节假体的瞬态混合润滑模型

Biosurface and Biotribology Pub Date : 2021-08-22 DOI: 10.1049/bsb2.12020

Hamza Butt, Lee Nissim, Leiming Gao, Connor Myant, Greg de Boer, Robert Hewson

{"title":"Transient mixed lubrication model of the human knee implant","authors":"Hamza Butt, Lee Nissim, Leiming Gao, Connor Myant, Greg de Boer, Robert Hewson","doi":"10.1049/bsb2.12020","DOIUrl":"10.1049/bsb2.12020","url":null,"abstract":"The human knee implant is computationally modelled in the mixed lubrication regime to investigate the tribological performance of the implant. This model includes the complex geometry of the implant components, unlike elliptical contact models that approximate this geometry. Film thickness and pressure results are presented for an ISO gait cycle to determine the lubrication regime present within the implant during its operation. It was found that it was possible for the lubrication regime to span between elastohydrodynamic, mixed and boundary lubrication depending on the operating conditions of the implant. It was observed that the tribological conditions present in one condyle were not necessarily representative of the other. Multiple points of contact were found within the same condyle, which cannot be computed by the elliptical contact solvers. This model can be used to balance forces in all directions, instead of only the normal loads, as often done in elliptical contact models. This work is an initial step towards understanding the role of the complex geometry in the tribological characteristics of the human knee implant when operating in physiological conditions.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"7 4","pages":"206-218"},"PeriodicalIF":0.0,"publicationDate":"2021-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44784952","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: 4

Polyurethane coated with polyvinylpyrrolidones via triazole links for enhanced surface fouling resistance 聚氨酯涂层聚乙烯吡咯烷酮通过三唑链接增强表面耐污性

Biosurface and Biotribology Pub Date : 2021-08-20 DOI: 10.1049/bsb2.12023

Xin Wen, Rashed Almousa, Sungsoo Na, Gregory G. Anderson, Dong Xie

{"title":"Polyurethane coated with polyvinylpyrrolidones via triazole links for enhanced surface fouling resistance","authors":"Xin Wen, Rashed Almousa, Sungsoo Na, Gregory G. Anderson, Dong Xie","doi":"10.1049/bsb2.12023","DOIUrl":"10.1049/bsb2.12023","url":null,"abstract":"Surfaces with hydrophilic and antimicrobial properties are very attractive for cardiovascular device-associated applications. The aim of this study was to prepare and coat a hydrophilic polymer containing a functional group capable of forming triazole functionality onto the surface of polyurethane (PU). The modified surfaces were assessed with cell adhesion, bacterial adhesion and bacterial viability. Mouse fibroblast cells (NIH-3T3) and three bacterial species were used for assessment. The results showed that the modified surface not only exhibited a significant reduction in cell adhesion with a 25%–59% decrease to mouse fibroblast but also showed a significant reduction in bacterial attachment with 26%–67%, 24%–61% and 23%–57% decrease to Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa, respectively, as compared with original PU. Furthermore, the polymer-modified surface exhibited a significant antibacterial function by inhibiting bacterial growth with reduction of 49%–84%, 44%–79% and 53%–79% to S. aureus, E. coli and P. aeruginosa, respectively, as compared with original PU. These results indicate that covalent polymer attachment enhanced the antibacterial and antifouling properties of the PU surface.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"7 4","pages":"219-227"},"PeriodicalIF":0.0,"publicationDate":"2021-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43352079","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: 3

Measuring fracture toughness of human dental enamel at small scale using notched microcantilever beams 用缺口微悬臂梁小尺度测量人牙釉质断裂韧性

Biosurface and Biotribology Pub Date : 2021-08-18 DOI: 10.1049/bsb2.12022

Kangjie Chu, Cancan Zhao, Fuzeng Ren

引用次数: 1

Advanced biofabrication strategies for biomimetic composite scaffolds to regenerate ligament-bone interface 韧带-骨界面再生仿生复合支架的先进生物制造策略

Biosurface and Biotribology Pub Date : 2021-08-13 DOI: 10.1049/bsb2.12021

Nan Jiang, Mao Mao, Xiao Li, Weijie Zhang, Jiankang He, Dichen Li

{"title":"Advanced biofabrication strategies for biomimetic composite scaffolds to regenerate ligament-bone interface","authors":"Nan Jiang, Mao Mao, Xiao Li, Weijie Zhang, Jiankang He, Dichen Li","doi":"10.1049/bsb2.12021","DOIUrl":"10.1049/bsb2.12021","url":null,"abstract":"The natural ligament–bone interface features gradient changes in matrix composition, architecture and cell phenotype, which play critical roles in reliable ligament fixation and smooth loading transfer. Mimicking such organisations in artificial composite tissue-engineering scaffolds is important for realising functional fixation between ligament implants and host bones. Here, the authors aim to provide a comprehensive review on the latest strategies to fabricate biomimetic composite scaffolds for the regeneration of ligament-to-bone interface. The biomimetic composite scaffolds are divided into stratified and gradient scaffolds, which are characterised as layer-specific and continuous changes, respectively, in scaffold materials and/or microstructures. Biofabrication strategies for different types of composite scaffolds are summarised. The effects of material/structural changes on cellular morphology, cell differentiation, in vivo osteointegration and multi-tissue interface regeneration are highlighted. Finally, the potential challenges and future perspectives in engineering biomimetic composite scaffolds for ligament–bone interface regeneration are discussed.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"7 4","pages":"187-205"},"PeriodicalIF":0.0,"publicationDate":"2021-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12021","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48634325","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: 1

A mechanical study of personalised Ti6Al4V tibial fracture fixation plates with grooved surface by finite element analysis 个性化Ti6Al4V沟面胫骨骨折固定钢板的力学分析

Biosurface and Biotribology Pub Date : 2021-08-12 DOI: 10.1049/bsb2.12019

Bo Liao, Jipeng Sun, Cheng Xu, Rufeng Xia, Wei Li, Dong Lu, Zhongmin Jin

{"title":"A mechanical study of personalised Ti6Al4V tibial fracture fixation plates with grooved surface by finite element analysis","authors":"Bo Liao, Jipeng Sun, Cheng Xu, Rufeng Xia, Wei Li, Dong Lu, Zhongmin Jin","doi":"10.1049/bsb2.12019","DOIUrl":"10.1049/bsb2.12019","url":null,"abstract":"Low shape matching and high stress shielding rates between bone plate and human bone are not conducive to the primary healing of fracture. In this study, taking the fracture site of the lower one-third of human tibia as an application case, six types of personalised Ti6Al4V tibial plates with grooved surface were designed and evaluated by reverse engineering and finite element analysis. The results showed that the grooved design can reduce the stress shielding rate of bone plate and promote the facture healing. Among the six types of bone plates, the ‘OUT-MI’ bone plate has the lowest stress shielding rate and the most uniform stress distribution. Meanwhile, with the increasing tibial load during the convalescence, the average stress and maximum axial displacement of the tibial fracture surface increased, which can effectively improve the bone regeneration in the tibial fracture area. Moreover, there was no significant difference in four-point bending performance between the ‘OUT-MI’ bone plate and the ‘STR-BE’ bone plate, indicating that the mechanical properties of this bone plate were reliable. The results provide a theoretical basis for the design of fracture fixation plates on clinical treatment.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"7 3","pages":"142-153"},"PeriodicalIF":0.0,"publicationDate":"2021-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45342045","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: 2

Morphology and mechanical performance between the skin surface of Rana dybowskii and Bufo gargarizans 大背蛙与大背蟾蜍皮肤表面形态及力学性能的比较

Biosurface and Biotribology Pub Date : 2021-08-05 DOI: 10.1049/bsb2.12018

Mo Li, Chunyu Du, Jili Wang, Zibo Gao, Xiao Yang, Donghui Chen, Jin Tong, Lili Ren

引用次数: 0

Biodegradable polymer hydrogel-based tissue adhesives: A review 可生物降解聚合物水凝胶基组织粘接剂的研究进展

Biosurface and Biotribology Pub Date : 2021-08-03 DOI: 10.1049/bsb2.12016

Xin Zhang, Yanan Jiang, Lu Han, Xiong Lu

{"title":"Biodegradable polymer hydrogel-based tissue adhesives: A review","authors":"Xin Zhang, Yanan Jiang, Lu Han, Xiong Lu","doi":"10.1049/bsb2.12016","DOIUrl":"10.1049/bsb2.12016","url":null,"abstract":"Tissue-adhesive materials are emerging biomaterials with potential applications in wound healing patches, tissue sealants, and haemostat materials. Tissue adhesives based on synthetic polymers generally have good adhesion but are not biodegradable. However, the long-term presence of non-biodegradable adhesives in the body can cause secondary harm to the patient. An ideal tissue adhesive should meet the following requirements: good adhesiveness, biodegradability, low cytotoxicity, and minimal inflammatory response. Natural polymers with inherent biodegradation and biocompatibility show great potentials in biomedical engineering, and the development of tissue adhesives based on natural polymers has become a hot topic in biomaterials science. This review systematically summarises the latest progresses in biodegradable tissue adhesives based on natural polymers, such as chitosan, hyaluronic acid, alginate, gelatin, dextran, and cellulose. Methods for preparing natural polymer tissue adhesives are summarised and their advantages and disadvantages are discussed. Finally, potential trends in the future direction of biodegradable tissue adhesives are discussed.","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"7 4","pages":"163-179"},"PeriodicalIF":0.0,"publicationDate":"2021-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.12016","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43019982","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: 12