نتایج جستجو برای: chitosan grafted multiwalled carbonnanotubes s
تعداد نتایج: 738777 فیلتر نتایج به سال:
It was the aim of this study to determine the potential of two aliphatic and two aromatic thiolated chitosan conjugates: chitosan-thioglycolic acid (chitosan-TGA), chitosan-4-thiobutylamidine (chitosan-TBA), chitosan-6mercaptonicotinic acid (chitosan-6MNA) and chitosan-4-mercaptobenzoic acid (chitosan-4MBA), respectively, as permeation enhancing agents. Ritonavir was employed as model compound....
The activation and adhesion of platelets or whole blood exposed to chitosan (CH) grafted surfaces is used to evaluate the hemocompatibility of biomaterials. The biomaterial surfaces are polyurethane (PU) tubes grafted with an inner poly(acrylic acid) (PAA) and an outer CH or quaternary ammonium modified CH (CH-Q) brush. The CH, CH-Q and PAA grafted layers were characterized by ellipsometry and ...
A kind of nanocomposites with good dispersion in water was prepared through noncovalent adsorption of toluidine blue (Tb) on multiwalled carbon nanotubes (MWCNT) for electric communication between horseradish peroxidase (HRP) and electrode. The nanocomposites could be conveniently cast on electrode surface. With the aid of chitosan, HRP was then immobilized on the nanostructure to form a reagen...
Inhibition and inactivation of Staphylococcus aureus, the pathogen involved inthe post-contamination of oysters, was studied using chitosan. Raw oysters were coatedwith 0, 0.5, 1.0, and 2.0% chitosan, dissolved in 0.5% hydrochloric acid with pH adjustedto 5.6 using 1N NaOH. Oysters without coating were used as the control. All samples were stored at 4 °C for 12-15 days. The outg...
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