Nanocomposites containing nano-calcium carbonate (nano-CaCO 3 ) in the range of 0.25-1.5% (w/w) were prepared via in situ polymerization of urethane methacrylate pre-polymer derived from poly(ethylene glycol) (PEG 400), polymeric diphenylmethane diisocyanate and 2-hydroxyethyl methacrylate. Incorporation of nano-CaCO 3 into poly (urethane methacrylate) matrix was confirmed by Fourier transform infrared spectroscopy and wide-angle x-ray diffraction studies. Density studies indicated that nanocomposites containing 0.75 wt% nano-CaCO 3 had more condensed microstructure. Tensile strength, abrasion resistance, heat deflection temperature and shore hardness of nanocomposites were found to be higher than that of pristine polymer. Impact strength decreased with an increase in the nano-CaCO 3 content. Thermal studies indicated single-step degradation under a nitrogen atmosphere. Scanning electron microscopy studies confirmed the uniform distribution of nano-CaCO 3 at lower loading of nano-CaCO 3 and microcracking occurred during wearing.
The current research was to extract the keratin protein from waste broiler chicken feather. Due to high keratin content in chicken feathers offers a valuable source of protein. The two steps involved are first employing (Na2S) to chicken feather then extracting the protein from chemicals. Sodium sulfide are employed as reducing agents. After the feather have been broken down using reducing agents in order to precipitate the protein dil. HCl is added to the solution. Protein that has been precipitated is repeatedly rinsed with distilled water and then kept into solution form by adding it into sodium hydroxide solution. Keratin obtained from broiler chicken feather had a yield of 81.1% which is relatively high in case of waste raw material conversion into value added product. The prepared keratin was characterized by FTIR, XRD, TGA to investigate the chemical composition, thermal properties, crystallinity properties and also physicomechanical properties including density were tested. From these findings results suggested that chicken feather can be used to extract protein. Due to biocompatible & biodegradable in nature. The keratin protein solution has a variety of uses such as anti-aging treatment, shampoo, conditioner and for medical treatment such as bone replacement and bone graft.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.