The effect of ZnO nanoparticles on nanomechanical behavior of Hydroxyapatite electrodeposited on NiTi biomedical alloy

Encouraging tribomechanical and biological responses of hydroxyapatite coatings reinforced by various levels of niobium pentoxide particles

“…The reason why the load–displacement curve of the S1 sample shows a large plateau-like behavior in the range of 0–700 nm is attributed to the high amount of porosity over the surface so that the indenter runs throughout the surface to reach the maximum load. 31 The presence of several discontinuities in the load–displacement curves, in particular for the S1 sample, can be interpreted by the crystals bending or cracking. 55 It is not surprising to see the pop-in and pop-out in the load–displacement diagrams of the layers as they are made of brittle HAp ceramic.…”

“…The published results demonstrate the increase in L c value of HAp coating with the addition of the reinforcements. For instance, Mehrvarz et al 31 reported that the L c of the HAp electrodeposit increases from 58 to 91 mN with the addition of 0.4 g L −1 ZnO nanoparticles to the HAp electrolyte.…”

“…The reported results have demonstrated the positive role of ceramic reinforcing particles, e.g., ZnO and TiO 2 , in promoting the mechanical properties of the HAp electrodeposits. 30,31 The type and concentration of the included reinforcing phase can seriously alter the mechanical properties of the HAp films. It is to be emphasized that the added phase should not degrade the biological performance of the films.…”

A β-(1-4) linked polysaccharide (Chitosan) in tripolyphosphate-zinc oxide (CTPP-ZnO) eco-conductive membrane

“…Membrane are often used for purification, in process such as haemodialysis [1] and biodiesel [2] , and waste water purification [3] , as adsorption and coagulation. A membrane is effective because it saves time is continuous and to conserves energy, but some of antifouling in membrane based filtration process including bioreactormembranes to micro-organisms degraded contaminants aspect with minimize fouling in the filtration process as well as improving the efficiency of the membranes used [3,4] . Although, in ῾protein-polysaccharide world᾿ there are several kinds of protein (gelatin) as well as polysaccharides such as cellulose, chitosan, dextran, heparin, inulin and chondroitin sulphate etc.…”

“…Although, in ῾protein-polysaccharide world᾿ there are several kinds of protein (gelatin) as well as polysaccharides such as cellulose, chitosan, dextran, heparin, inulin and chondroitin sulphate etc. have been potential importancy in hydrogel mediated biomedical-engineering application [4] , due to their practical performance such as delivery of bioactive-selective components, regeneration of tissue cell as well as encapsulation of nanoparticles [5] . Recent studies has been carried out the effort in to membrane synthesis from natural polymers, for example, the membranes made from polysaccharide such as cellulose [6,7] , but ought chitosan based [8,9] .…”