Tritium-Probe Method in a Study of Adsorption Layers of Lysozyme on the Surface of Detonation Nanodiamonds

Radiochemistry - Tritium-labeled lysozyme was used to determine its adsorption on the surface of nanodiamonds produced by detonation synthesis. It was found that the amount of the adsorbed protein...     

Preparation of Tritium-Labeled Hyaluronic Acid by Tritium Thermal Activation Method

Radiochemistry - The principal possibility for preparing tritiated hyaluronic acid by the thermal activation method is demonstrated. The influence exerted by the conditions of preparing substances...     

Chitosan-nanodiamond composites for improving heart valve biological prostheses materials: preparation and mechanical trial

Abstract

Nanodiamond-chitosan composites of definite composition were prepared to modify heart valve biological prostheses materials. The final material is characterized by higher failure stress and Young modules. Moreover, primary modification of nanodiamonds with chitosan provides an additional strength to collagen-based final material.     

Adsorption of alkyltrimethylammonium bromides on nanodiamonds

Abstract

Adsorption of alkyltrimethylammonium bromides (DTAB, TTAB and CTAB) on detonation nanodiamonds was studied. Nanodiamonds of positive and negative zeta potentials in aqueous suspensions were used. The amount of the compound on nanodiamond surface was determined using tritium labeled surfactants. Our results suggested the same mechanism of the adsorption complex formation for nanodiamonds of total positive and negative charge.     

Chitosan adsorption on nanodiamonds: stability and mechanism

Abstract

Chitosan adsorption complexes were obtained with nanodiamonds possess negative as well as positive zeta-potential in the aqueous suspensions. The application of tritium labeled chitosan allowed the determination of its surface concentration on the nanomaterial and the construction of the adsorption isotherm in the chitosan concentration range from 0.02 to 1?mg/ml. Premodification of nanodiamonds with cationic surfactant suggests mainly electrostatic interactions between chitosan and the surface.