Polyelectrolytes, synthetic organic

PPV derivatives can be prepared by water-soluble precursor route [14-16] involving sulfonium polyelectrolyte or organic-soluble precursor route [3,17,18] involving alkoxy substituted non-ionic form, respectively. The representative synthetic pathways for PPV derivatives are shown in Scheme 1. 

One of the prime environmental objectives is the removal of suspended contaminants from water and waste streams. Water turbidity in nature is the result of colloidal clay dispersion and the color is from decayed wood and leaves (tannins and lignins) and organic soil matter. In addition to these contaminants, there are viruses, algae, bacteria, metal oxides, oils and other pollutants. In recent years, synthetic organic polyelectrolyes, in particular the cationic polymers, have been used very effectively in water treatment (3). These polyelectrolytes are high... 

Tenney MW, Echelberger WF, Schuessler RG, Pavoni JL. Algal flocculation with synthetic organic polyelectrolytes. Appl Microbiol 1969 965. 

A variety of synthetic polymers, including polycarbonate resins, substituted olefins, and polyelectrolyte complexes, are employed as ultrafiltration membranes. Many of these membranes can be handled dry, have superior organic solvent resistance, and are less sensitive to temperature and pH than cellulose acetate, which is widely used in RO systems. 

Synthetic ion-exchange organic polymers are often network polyelectrolytes. 

Class B. Organic water-soluble flocculants, which are adsorbed on the cement particles and increase viscosity by promoting interparticle attraction. These materials are styrene copolymers with carboxyl groups, synthetic polyelectrolytes and natural gums. 

Class B—organic flocculants soluble in water, adsorbed on cement grains and increasing viscosity by electrostatic attraction. To class B belong styrene copolymers with carboxylate groups, synthetic polyelectrolytes and natural rabbets. 

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