ASTM International - ASTM D4243-99
Standard Test Method for Measurement of Average Viscometric Degree of Polymerization of New and Aged Electrical Papers and Boards
|Publication Date:||10 April 1999|
|ICS Code (Paper and board insulating materials):||29.035.10|
1.1 This method describes a standard procedure for determining the average viscometric degree of polymerization (abbreviated DPv) of new or aged electrical papers. The determination is made by measuring the intrinsic viscosity of a solution of the paper in an appropriate solvent.
1.2 The degree of polymerization (or the degree of condensation) of a particular cellulose molecule is the number of anhydro-[beta]-gluco
1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.