ASTM D1601-99
(Test Method)Standard Test Method for Dilute Solution Viscosity of Ethylene Polymers
Standard Test Method for Dilute Solution Viscosity of Ethylene Polymers
SCOPE
1.1 This test method covers the determination of the dilute solution viscosity of ethylene polymers at 135°C. It is applicable to a reasonably wide spectrum of ethylene polymers having densities from 0.910 to 0.970 g/cm . Directions are given for the determination of relative viscosity (viscosity ratio), inherent viscosity (logarithmic viscosity number), and intrinsic viscosity (limiting viscosity number).
1.2 The values as stated in SI units are to be regarded as the standard.
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 determine the applicability of regulatory limitations prior to use.
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Designation: D 1601 – 99
Standard Test Method for
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Dilute Solution Viscosity of Ethylene Polymers
This standard is issued under the fixed designation D 1601; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
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1. Scope * 2.2 ISO Standards:
ISO 1628-3 Plastics—Determination of Viscosity Number
1.1 This test method covers the determination of the dilute
and Limiting Viscosity Number—Part 3: Polyethylenes
solution viscosity of ethylene polymers at 135°C. It is appli-
and Polypropylenes
cable to a reasonably wide spectrum of ethylene polymers
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having densities from 0.910 to 0.970 g/cm . Directions are
3. Terminology
given for the determination of relative viscosity (viscosity
3.1 Units, symbols, and abbreviations used in this test
ratio), inherent viscosity (logarithmic viscosity number), and
method are those recommended in IEEE/ASTM SI 10 and
intrinsic viscosity (limiting viscosity number) (see Appendix
Terminologies D 883 and D 1600 (see also Appendix X4).
X4).
1.2 The values as stated in SI units are to be regarded as the
4. Significance and Use
standard.
4.1 The knowledge of dilute solution viscosity serves as an
1.3 This standard does not purport to address all of the
additional tool in characterizing ethylene polymers. Viscosity
safety concerns, if any, associated with its use. It is the
data alone may be of limited value in predicting the processing
responsibility of the user of this standard to establish appro-
behavior of the polymer. However, when used in conjunction
priate safety and health practices and determine the applica-
with other flow and physical property values, the solution
bility of regulatory limitations prior to use.
viscosity of ethylene polymers may contribute to their charac-
NOTE 1—This test method is technically equivalent to ISO 1628-3.
terizations.
NOTE 2—Appendix X1-Appendix X3 contain material from the previ-
4.2 Satisfactory correlation between solution viscosity and
ous version of Test Method D 1601 and are included for information only.
certain other properties is possible from polymers of a single
manufacturing process. The solution viscosity test is not
2. Referenced Documents
sensitive to some molecular configurational patterns that may
2.1 ASTM Standards:
occur among polymers from different manufacturing pro-
D 86 Method for Distillation of Petroleum Products at
cesses. Hence, its correlation with other properties of polymers
2
Atmospheric Pressure
produced by different processes, by even one manufacturer,
D 445 Test Method for Kinematic Viscosity of Transparent
may be limited.
2
and Opaque Liquids
4.3 The viscosity of polymer solutions may be drastically
3
D 883 Terminology Relating to Plastics
affected by the presence of known or unknown additives in the
D 1600 Terminology for Abbreviated Terms Relating to
sample. The use of solution viscosity may be of questionable
3
Plastics
value where ethylene polymers are known or suspected to
D 4020 Specification for Ultra-High-Molecular Weight
contain colorants, carbon black, low molecular weight hydro-
4
Polyethylene Molding and Extrusion Materials
carbons, fillers, or other additives.
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E 1 Specification for ASTM Thermometers
4.4 The measurement of dilute solution viscosity of ethyl-
IEEE/ASTM SI-10 Standard for Use of the International
ene polymers presents problems not ordinarily encountered in
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System of Units (SI): The Modern Metric System
viscosimetry. Ethylene polymers are not soluble at room
temperature in any known solvent. Some of the higher density
materials are insoluble below 100°C. Extreme care must be
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This test method is under the jurisdiction of ASTM Committee D-20 on Plastics
exercised in transferring the solution to the viscometer for the
and is the direct responsibility of Subcommittee D20.70 on Analytical Methods
test if the correct solution concentration is to be maintained.
(Section D20.70.05).
This test has no significance unless the sample is completely
Current edition approved Sept. 10, 1999. Published January 2000. Originally
e1
soluble.
published as D 1601 – 58. Last previous edition D 1601 – 86 (1991) .
2
Annual Book of ASTM Standards, Vol 05.01.
3
Annual Book of ASTM Standards, Vol 08.01.
4
Annual Book of ASTM Standards, Vol 08.03.
5 7
Annual Book of ASTM Standards, Vol 14.03. Available from American National Standards Institute, 11 W. 42nd St., 13th
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Annual Book of ASTM Standards, Vol 14.04. Floor, New York, NY 10036.
*A Summary of Changes section appears at the end of this standard.
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