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Influence of Cationic Starch Discharge in Acid and Alkaline Media on Paper Viscoelasticity

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V.I. Komarov, M.Yu. Kuznetsova

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676. 017.

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Abstract

The nature of paper deformation in the presence of cationic starch in the composition at pH 5.0 and 9.0 is shown to be determined by the processes occurring at the finite stage of slowly-elastic deformations and also by the crack resistance at the last deformation stage. Contribution of inelastic deformation to the paper viscoelasticity comes out to the larger degree in the samples prepared in the alkaline medium. The optimum cationic starch con-sumption in the acid and alkaline media is established for increasing strength and viscoelasticity.

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Influence of Cationic Starch Discharge in Acid and Alkaline Media on Paper Viscoelasticity

 

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