Showing papers in "Materials Science and Engineering: C in 2015"

TL;DR: This article aims to review the literature concerning the choice of selectivity for hydrogels based on classification, application and processing to assess their potential in hi-tech applications in the biomedical, pharmaceutical, biotechnology, bioseparation, biosensor, agriculture, oil recovery and cosmetics fields.

TL;DR: Characterisation techniques utilised in this study include two funnel flow tests, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), compressive strength testing and computed tomography (CT).

TL;DR: The new potential therapeutic intervention for wound healing includes sustained delivery of growth factors, and siRNA delivery, targeting microRNA, and stem cell therapy and environment sensors use optical, odor, pH, and hydration sensors to detect such characteristics as uric acid level, pH and protease level, and infection.

TL;DR: It is strongly believed that biosynthesized nanoparticles will be useful for the development of cancer therapy using nanomedicine approach in near future.

TL;DR: The antibacterial studies performed against a set of bacterial strains showed that Gram positive (G+) bacteria were relatively more susceptible to the NPs than Gram negative (G-) bacteria.

TL;DR: In this review, various polyurethane systems for scaffolds are discussed, as well as methods of fabrication, including the latest developments, and their advantages and disadvantages.

TL;DR: The results demonstrate that the bio-inspired coating synthetic PLA polymer can be used as a simple technique to render the surfaces of synthetic scaffolds active, thus enabling them to direct the specific responses of hADSCs.

TL;DR: This review summarizes the recent developments of biocomposite materials as bone scaffolds with emphasis on their mechanical properties and ways to improve their performance.

TL;DR: A thorough analysis of the available literature has been performed and about 50 deposition techniques of CaPO4 have been revealed, systematized and described, used to improve the surface properties of various types of artificial implants.

TL;DR: X-ray photoelectron spectroscopy analysis confirmed the formation of metallic silver and elucidates the surface state composition of AgNPs and exhibited effective antibacterial activity with the decrement of particle size against all tested bacterial cultures.

TL;DR: Electrospun nanofiber mats from three different polymers concerning cell-scaffold interaction and wound healing promotion had the highest impact on the healing process by decreasing the extent of wound contraction and enhancing the production of a neodermis and re-epithelialization of the wound.

TL;DR: The uniform pore structure and the excellent mechanical properties of the HAp/CS composite scaffolds likely resulted from the use of the AG solution at pH 10 as a dispersant for the nano-HAp powders.

TL;DR: It is demonstrated that metallic zinc did not provoke responses that often contribute to restenosis and low cell densities and neointimal tissue thickness, along with tissue regeneration within the corroding implant, point to optimal biocompatibility of corroding zinc.

TL;DR: The preparation conditions were found to affect significantly the antibacterial activity of these nanoparticles and the results showed a noteworthy inhibition on both bacterial strains.

TL;DR: The antibacterial efficacy of protein functionalized AuNPs were tested against Gram positive organisms Bacillus subtilis and Staphylococcus aureus and the results confirmed high bacterial inhibition and bactericidal properties.

TL;DR: The as-cast sample has the highest bio-corrosion rate due to micro-galvanic corrosion between the eutectic product (Mg+Ca2Mg6Zn3) and the surrounding magnesium matrix, and can be improved by heat treatment.

TL;DR: This study shows that the addition of jute fiber and glass fiber in epoxy, increases the density, the impact energy, the tensile strength and the flexural strength, but decreases the loss mass in function of temperature and the water absorption.

TL;DR: UV-Vis spectroscopy results showed that anticancer drug 5-fluorouracil (5-Fu) could be successfully included into the cavities of the covalently linked CDpoly-MNPs and anticancer drugs.

TL;DR: Reagents used in PU synthesis designed to increase PU biocompatibility (polyols) and biodegradability (isocyanates) are focused on and suggested surface modifications of electrospun PUs are described, and the direct influence of surface wettability on providing enhanced biOCompatibility of scaffolds is described.

TL;DR: In this article, the authors explore 3D printed polyvinyl alcohol (PVA) as a sacrificial mold in a polymer casting process and achieve 80% porosity corresponding to about 150 cm(2)/cm(3) surface to volume ratio.

TL;DR: A thorough cytotoxicity evaluation of Zn-3Mg alloy for biodegradable bone implants showed that cell viability was reduced by ~50% through an induction of apoptosis at day 1; however, cells were able to recover at days 3 and 7, indicating that the cells underwent a healing process after exposure to the alloy.

TL;DR: The cell viability results indicated that DOX loaded PEO/CS/GO/DOX nanofibrous scaffold could be used as an alternative source of DOX compared with free DOX to avoid the side effects of freeDOX.

TL;DR: The cytotoxicity aspects of mesoporous structures being of crucial importance for successful application of these novel tools in the biomedical field are discussed and will serve as a comprehensive guide for scientists in the area of biosciences giving the background.

TL;DR: This study has shown that RF magnetron sputtering (specifically co-sputtering), offers an appropriate methodology to control the surface properties of Sr-substituted HA, such as the crystallinity, stoichiometry, phase purity and surface morphology.

TL;DR: New biodegradable polyurethane films were developed based on hexamethylene diisocyanate and glycerol as the hard segment (HS), and poly(caprolactone) triol (PCL triol) and low-molecular-weight poly(ethylene glycol) PEG as the soft segment (SS) without the use of a catalyst.

TL;DR: Alginate/HNT composite scaffolds exhibit great potential for applications in tissue engineering andThermogravimetrica analysis (TGA) shows that HNTs can improve the thermal stability of the alginate.

TL;DR: The results of this investigation indicate the potential suitability of these ES-SF tubular matrices as scaffolds for the regeneration of small diameter blood vessels.

TL;DR: Cell culture results showed that PLA/CNC-g-PEG composite nanofibers exhibited improved biocompatibility to hMSCs, which revealed the potential application of this nanocomposite as the scaffolds in bone tissue engineering.

TL;DR: The results show that porous Ti6Al4V ELI still remains the strongest material for statically loaded applications, whereas pure titanium has a mechanical behavior similar to tantalum and is the material of choice for cyclically loaded porous implants.

TL;DR: The suture retention strength and burst pressure of tubular TPU/GO scaffolds containing 0.5wt.% GO were found to meet the requirements of human blood vessels, and endothelial cells were able to attach to the inner surface of the tubular scaffolds.