Shopping Cart

No products in the cart.

ASTM-D2857 2016

$40.63

D2857-16 Standard Practice for Dilute Solution Viscosity of Polymers

Published By Publication Date Number of Pages
ASTM 2016 6
Guaranteed Safe Checkout
Categories: ,

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

ASTM D2857-16

Historical Standard: Standard Practice for Dilute Solution Viscosity of Polymers

ASTM D2857

Scope

1.1 This practice covers the determination of the dilute solution viscosity of polymers. There are several ASTM standards (Test Methods D789, D1243, D1601, and D4603, and Practice D3591) that describe dilute solution viscosity procedures for specific polymers, such as nylon, poly(vinyl chloride), polyethylene, and poly(ethylene terephthalate). This practice is written to augment these standards when problems arise with which the specific procedure is not concerned, or when no standard is available for the polymer under investigation.

1.2 This practice is applicable to all polymers that dissolve completely without chemical reaction or degradation to form solutions that are stable with time at a temperature between ambient and 150°C. Results are usually expressed as relative viscosity (viscosity ratio), inherent viscosity (logarithmic viscosity number), or intrinsic viscosity (limiting viscosity number) (see 3.1).

1.3 For polyamides, relative viscosity values by this procedure are not equivalent to those determined by Test Methods D789.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Note 1: This standard and ISO 1628, “Plastics—Determination of Viscosity Number and Limiting Viscosity Number,” are technically equivalent.

Keywords

flow and flow rate—thermoplastics; polymers—molecular weight; viscosity—dilute–solution; viscosity—intrinsic; viscosity—plastics;

ICS Code

ICS Number Code 83.080.01 (Plastics in general)

DOI: 10.1520/D2857-16

ASTM-D2857 2016
$40.63