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Journal of Applied Biomaterials & Functional Materials

Feng Lei, Zhang Zhen-Ya, Wen Xiao-Dong, Xin Chao, Hu Dong-Yuan
INTRODUCTION: Concrete structures in shaft linings are apt to deteriorate prematurely and therefore prompt restoration is required. In considering this, desulphurization fly ash and machine-made tuff sand are employed to fabricate a phosphate-based rapid repairing material. METHODS: The long-term efficiency of the material is evaluated based on combined factors, so drying shrinkage, interfacial bonding strength, corrosion resistance, and combustibility of the specimens are tested and researched in this paper...
April 1, 2018: Journal of Applied Biomaterials & Functional Materials
Cem Aydemir, Semiha Yenido─čan, Arif Karademir, Emine Arman Kandirmaz
INTRODUCTION: Printing inks oil selection is related to the desired nature of the varnish in the ink production. Petroleum-derived mineral oils and vegetable oils can be used in offset inks. METHODS: In this study, the behaviors of vegetable- and mineral oil-based inks on uncoated and coated paper surfaces were investigated in terms of printability. Solid tone test prints were done with offset printing of these inks. Print gloss of the printed samples was measured and a light fastness test was implemented on these samples in order to determine the resistance to fading...
April 1, 2018: Journal of Applied Biomaterials & Functional Materials
Gabriele Taormina, Corrado Sciancalepore, Massimo Messori, Federica Bondioli
The aim of this review is a faithful report of the panorama of solutions adopted to fabricate a component using vat photopolymerization (VP) processes. A general overview on additive manufacturing and on the different technologies available for polymers is given. A comparison between stereolithography and digital light processing is also presented, with attention to different aspects and to the advantages and limitations of both technologies. Afterward, a quick overview of the process parameters is given, with an emphasis on the necessities and the issues associated with the VP process...
April 1, 2018: Journal of Applied Biomaterials & Functional Materials
Qingxi Liu, Zijiang Zhang, Yupeng Liu, Zhanfeng Cui, Tongcun Zhang, Zhaohui Li, Wenjian Ma
INTRODUCTION: Three-dimensional (3D) collagen scaffold models, due to their ability to mimic the tissue and organ structure in vivo, have received increasing interest in drug discovery and toxicity evaluation. METHODS: In this study, we developed a perfused 3D model and studied cellular response to cytotoxic drugs in comparison with traditional 2D cell cultures as evaluated by cancer drug cisplatin. RESULTS: Cancer cells grown in perfused 3D environments showed increased levels of reactive oxygen species (ROS) production compared to the 2D culture...
March 1, 2018: Journal of Applied Biomaterials & Functional Materials
Maryam Tabarzad, Zeinab Sharafi, Jaber Javidi
INTRODUCTION: Magnetic nanoparticles (MNPs) are one of the most useful particulate systems in analytical applications such as specific aptamer selection. Proteins are the most noted targets of aptamer selection. Generally, covalently immobilized protein coated MNPs are more stable structures. METHODS: In this study, coagulation factor VIII (FVIII) was immobilized on MNPs. A silica coating provided isocyanate functional groups was considered to interact covalently with reactive groups of the protein, resulting in a stable protein immobilization...
March 1, 2018: Journal of Applied Biomaterials & Functional Materials
Preeti Makkar, Swapan Kumar Sarkar, Andrew R Padalhin, Byoung-Gi Moon, Young Seon Lee, Byong Taek Lee
BACKGROUND: Magnesium (Mg)-based alloys are considered to be promising materials for implant application due to their excellent biocompatibility, biodegradability, and mechanical properties close to bone. However, low corrosion resistance and fast degradation are limiting their application. Mg-Ca alloys have huge potential owing to a similar density to bone, good corrosion resistance, and as Mg is essential for Ca incorporation into bone. The objective of the present work is to determine the in vitro degradation and in vivo performance of binary Mg- xCa alloy ( x = 0...
March 1, 2018: Journal of Applied Biomaterials & Functional Materials
Jianfeng Li, Xia Zhao, Xiaojie Hu, Chunjing Tao, Run Ji
INTRODUCTION: The unilateral external fixator has become a quick and easy application for fracture stabilization of the extremities; the main value for evaluation of mechanical stability of the external fixator is stiffness. The stiffness property of the external fixator affects the local biomechanical environment of fractured bone. METHODS: In this study, a theoretical model with changing Young's modulus of the callus is established by using the Castigliano's theory, investigating compression stiffness, torsional stiffness and bending stiffness of the fixator-bone system during the healing process...
March 1, 2018: Journal of Applied Biomaterials & Functional Materials
Shi Yan, Yong Dai, Putian Zhao, Weiling Liu
INTRODUCTION: Steel-concrete composite structures are playing an increasingly important role in economic construction because of a series of advantages of great stiffness, good seismic performance, steel material saving, cost efficiency, convenient construction, etc. However, in service process, due to the long-term effects of environmental impacts and dynamic loading, interfaces of a composite structure might generate debonding cracks, relative slips or separations, and so on, lowering the composite effect of the composite structure...
January 2018: Journal of Applied Biomaterials & Functional Materials
Guangxin Wang, Yunchao Zhao, Bin Yang, Yongfa Song
BACKGROUND: High purity cobalt has many important applications, such as magnetic recording media, magnetic recording heads, optoelectronic devices, magnetic sensors, and integrated circuits, etc. To produce 5N or higher purity cobalt in an electro-refining process, one of the challenges is to effectively reduce the Fe content of aqueous cobalt salt solution before electrolysis. This paper describes thermodynamic and kinetic investigations of the Fe adsorption process of a new sulfonated monophosphonic resin with the trade mark Monophos...
January 2018: Journal of Applied Biomaterials & Functional Materials
Zhanfeng Liu, Yanshu Liu, Xiaolan Han, Wencui Zheng
INTRODUCTION: In this study, the super-long deep-hole drilling of a titanium alloy was investigated. METHODS: According to material properties of the titanium alloy, an experimental approach was designed to study three issues discovered during the drilling process: the hole-axis deflection, chip morphology, and tool wear. RESULTS: Based on the results of drilling experiments, crucial parameters for the super-long deep-hole drilling of titanium alloys were obtained, and the influences of these parameters on quality of the alloy's machining were also evaluated...
January 2018: Journal of Applied Biomaterials & Functional Materials
Zhouhui Yu, Aiyong Cui, Peizhong Zhao, Huakai Wei, Fangyou Hu
INTRODUCTION: Modified epoxy suitable for ultraviolet (UV) curing is prepared by using organic silicon toughening. The curing kinetics of the composite are studied by dielectric analysis (DEA), and the two-phase compatibility of the composite is studied by scanning electron microscopy (SEM). METHODS: The tensile properties, heat resistance, and humidity resistance of the cured product are explored by changing the composition ratio of the silicone and the epoxy resin...
January 2018: Journal of Applied Biomaterials & Functional Materials
Fuming Liu, Aixia Dong, Chaoqun Liu, Wenqing Wu
INTRODUCTION: In this study, the asphalt mixture (porosity <2%) was tested for use between the upper and middle layers of the asphalt pavement to improve its interlayer structure and to enhance its related waterproof and anti-cracking ability. METHODS: Considering the weather characteristics and traffic conditions in Jiangxi Province, appropriate raw materials were selected. Based on the technical indexes of the raw materials, expected porosity (<2%), and AC-5 standard for the asphalt mixture, experiments were conducted to determine the best gradation range of the waterproof and anti-cracking layer, and to obtain the optimum amount of the asphalt and fiber used based on Marshall tests...
January 2018: Journal of Applied Biomaterials & Functional Materials
Liu Lei, Han Xiuli, Li Mingduo, Zhang Di
BACKGROUND: Mold fluxes are mainly prepared using cement clinker, quartz, wollastonite, borax, fluorite, soda ash and other mineral materials. Quartz, as one of the most common and essential materials, was chosen for this study to analyze itseffects on crystallization temperature, critical cooling rate, crystal incubation time, crystallization ratio and phases of flux film. METHODS: We used the research methods of process mineralogy with the application of the single hot thermocouple technique, heat flux simulator, polarizing microscope, X-ray diffraction, etc...
January 2018: Journal of Applied Biomaterials & Functional Materials
Daguo Wang, Chaochao Han, Bing Xu, Bin Li
INTRODUCTION: This study aims to investigate the strength characteristics of fiber composites under uniaxial tensile stress. METHODS: A tensile failure finite element model based on fracture mechanics was built for fiber composites. The principal stress concentration-release-transfer evolution and the crack propagation of the composites under the conditions of equal single fiber width, unequal quantity, and equal total fiber width and unequal quantity were discussed...
January 2018: Journal of Applied Biomaterials & Functional Materials
Wang Ze, Tan Wen-Sheng, Ye-Xia, Zhang Ming, Li Xiao-Ping, Qiu Jian-Guo, Yang Xiao-Hong
INTRODUCTION: Pyrolytic carbon (PyC) is a kind of biomaterial which is chemically inert and has excellent biocompatibility. In order to obtain a super-hydrophobic PyC surface to improve anticoagulation and inhibit thrombus, this study prepares grating pair structure, microhole array structure, helix structure on PyC surface by nanoseconds laser etching. METHODS: Rod-like ZnO film and ball-like ZnO film are prepared on the PyC surface by the hydrothermal method; polyvinyl pyrrolidone (PVP) nanofiber film and PVP/TiO2 complex nanofiber film are prepared on the PyC surface by the electrospinning method; the PyC surface is silanized...
January 2018: Journal of Applied Biomaterials & Functional Materials
Zhongxian Wang, Yiping Liu, Yonggeng Wei, Yilin Song
BACKGROUND: The resonant coil design is taken as the core technology in the magnetic coupling resonant wireless power transmission system, which achieves energy transmission by the coupling of the resonant coil. This paper studies the effect of the resonant coil on energy transmission and the efficiency of the system. Combining a two-coil with a three-coil system, the optimum design method for the resonant coil is given to propose a novel coil structure. METHODS: First, the co-simulation methods of Pspice and Maxwell are used...
January 2018: Journal of Applied Biomaterials & Functional Materials
Shenglai Chen, Min Yang, Xinong Zhang
INTRODUCTION: Supporting rings are becoming more widely applied as an assistant structural support. However, during the engineering design and optimization process, many tests are necessary to understand the mechanical properties of different materials and the different section shape for supporting rings. METHODS: The key problem is to measure the radial force caused by elongation under the axes' pressure. This cannot be measured directly through the use of sensors...
January 2018: Journal of Applied Biomaterials & Functional Materials
Tan Heng, Wang Ze, Tan Wen-Sheng, Li Xiao-Ping, Qiu Jian-Guo, Yang Xiao-Hong
INTRODUCTION: Micro/nanostructured materials have attracted a great deal of attention, and many strategies have been developed to fabricate micro/nanostructured materials. METHODS: Amine-functionalized micro/nanostructured Fe3 O4 with different sizes was synthesized conveniently in organic media. The chemical structures of as-synthesized products were characterized by FTIR, TEM, SEM, and XRD. RESULTS: The ligand binds to the Fe3 O4 core by hydrogen bond between the oxygen atom on the surface of Fe3 O4 and the hydrogen atom in molecular ethylenediamine...
January 2018: Journal of Applied Biomaterials & Functional Materials
Xinhua Liu, Yong Li, Zhaoyang Chu, Yinchun Fang, Hongliang Zheng
INTRODUCTION: Bacterial cellulose (BC) aerogels have received more and more attention due to their renewability, biodegradability and other excellent properties in recent years. Modification of BC aerogels using different methods would expand their applications. However, many problems exist for these modifications, such as a low grafting ratio, the larger dosage of metal catalyst required and so on. Activator regeneration by electron transfer (ARGET) for atom transfer radical polymerization (ATRP) is a novel ATRP method which could significantly reduce the amount of metal catalyst required and achieve a high grafting ratio...
January 2018: Journal of Applied Biomaterials & Functional Materials
Jing Li, Ziyu Guo, Yinzhu Quan, Jian Li
INTRODUCTION: Truss core material, which is a new type of ultra-light material with comprehensive properties, is used in the aerospace industry. The aim of this paper is to investigate the dynamic behavior of three-dimensional Kagome sandwich plates with truss core under transverse and in-plane excitation in the case of 1:1 internal resonance. METHODS: Firstly, the averaged equation is obtained by means of the method of multiple scales. Then, the nonlinear system is analyzed applying the theory of normal form...
January 2018: Journal of Applied Biomaterials & Functional Materials
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