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2.6. Viscometry

JM Jasna Malešič
IK Ida Kraševec
IC Irena Kralj Cigić
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Viscometric determinations of the average degree of polymerization (average DPv) were performed according to the standard viscometric methods [17,30], using a glass capillary viscosimeter (Schott and Gen, Mainz, Germany) and fresh CED solvent (Carlo Erba Reagents S.r.l., Milan, Italy). Twenty milligrams of paper was dissolved in 20 mL of solution, consisting of 10 mL cupriethylenediamine (CED) and 10 mL deionized water. The efflux time of a solution was measured in duplicates. The Mark–Houwink–Sakurada equation was used to calculate average DPv [31].

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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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