ION-EXCHANGE PROPERTIES OF IONITES WITH VARIOUS FUNCTIONAL GROUPS

Studying effects of ion exchange resin structure and functional groups on Re(VII) adsorption onto Purolite A170 and Dowex 21K

The effects of the functional groups and structures of two different resins, weak base/macroporous and strong base/gel type, Purolite A170 and Dowex 21K on the adsorption properties of Re(VII) ions were investigated experimentally and described by the isotherm, kinetic, and thermodynamic modeling. In this regard, four widely used adsorption isotherm models including Langmuir, Freundlich, Temkin...

Photochemical release of various functional groups

The photochemical liberation of functional groups is an attractive alternative to the traditional chemical approach. Several photolabile protecting groups have been developed in the past decades, but they were mainly designed to protect amines and carboxylic acids. In this account, we present some of our recent work on the photochemical release of other functions, such as silanols, aldehydes, a...

Ion-exchange reactions between cartilage and various cations.

Electrochemical Properties and Antibacterial Activity of Polyvinyl Chloride Supported Silver Molybdate Ion-Exchange Composite Membrane

Polyvinyl chloride supported silver molybdate composite material is used to develop by solution casting method. This membrane was characterized by various instrumental techniques such as Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA) and scanning electron microscopy (SEM) analyses. These characterizations are used to understand the functional groups,thermal sta...

Ion-exchange reactions between acid mucopolysaccharides and various cations.

In studies of cation-binding by acid mucopolysaccharides and the possible significance of these reactions in calcification processes, it has been shown, in cartilage, that the chondroitin sulphate component is solely responsible for the cation-binding capacity, that the cation-binding reactions are of the ion-exchange type and that different cations exhibit varying degrees of affinity for the c...