Definition - What does Lignosulphonate mean?

Lignosulphonate is a water soluble poly-electrolyte polymer which is anionic in nature. Lignosulphonates are the by-products of the production of the wood pulp by using sulphite pulping. They are considered as the amorphous branched polymers of the lignin which contains sulphonated phenyl propane monomers that are covalently linked and are produced from sulphite pulping of the lignocellulosic bio-masses. Sodium, magnesium and calcium Lignosulphonates are considered to be together under Lignosulphonate. They are largely used as the plasticizers in making the concrete where they help make the concrete with less water and also maintain its ability to flow.

Petropedia explains Lignosulphonate

Lignosulphonates are recovered from spent pulping liquid in sulphite pulping. They are used in the production of a plasterboard for reducing the amount of water that is required to form a layer between the two sheets of paper and allow the stucco to flow. They are capable of reducing the viscosity of the mineral slurries that are used as an advantage in the oil drilling mud. They are also used in the dispersion of carbon black, dyes, pesticides and other insoluble liquids and solids in the water. They are widely used in the deflocculation of the clay used in the drilling fluids in the gas and oil industry.

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