ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Determination of polydispersion of cellulose by fractionated precipitation of its hydroxide solutions

W. Berndt

Spolana, Neratovice

Abstract: A method for the detn. of the polydispersion of cellulose (I) based on the fractional pptn. of I dissolved in NaOH is described. This method consists of these steps: (1) the regeneration of native I by pptg. it from Schweizer's reagent; (2) dissolving it in 10% NaOH at -5°; (3) fractional pptn. of aliquot portions with 2N H₂SO₄. The degree of polymerization of unpptd. I was detd. by measuring its viscosity in 10% NaOH.

Full paper in Portable Document Format: 710a649.pdf (in Czech)

Chemical Papers 7 (10) 649–657 (1953)