ASTM D5885/D5885M-20

Standard Test Method for Oxidative Induction Time of Polyolefin Geosynthetics by High-Pressure Differential Scanning Calorimetry

SIGNIFICANCE AND USE
5.1 The oxidative induction time is a characteristic of a compounded polyolefin product that is dependent not only on the type and amount of additives present, but also on the type of resin. In well-behaved systems, this test method can be used as a quality control measure to monitor the stabilization in geosynthetics as received from a supplier.  
5.2 When this test method is used to compare different geomembrane formulations containing different antioxidant packages, then those results shall be considered valid only at the temperature of test.  
5.3 This test method is intended as a geosynthetic test. Use of the OIT value to estimate the lifetime of the geomembrane from which the test specimen is taken is not addressed, nor shall it be used for this purpose.  
5.3.1 Caution should be exercised in data interpretation since oxidation reaction kinetics are a function of temperature and the properties of the additives contained in the geosynthetic sample. For example, OIT values are often used to select optimum resin formulations. Certain antioxidants, however, may generate poor OIT results even though they may be adequate at their intended use temperature and vice versa.  
5.4 This test method can be used for other purposes such as manufacturing control and research and development.  
5.5 Oxidation induction time is strongly dependent upon test temperature and the partial pressure of oxygen. The higher the test temperature or the oxygen partial pressure, or both, the shorter the oxidation induction time.  
5.5.1 The use of high test temperature, however, may have deleterious effects. The first of these is the potential volatilization of additive packages used to stabilize the test materials. The second is the potential for the influence of chemical mechanisms which are not significant at end-use operation conditions.  
5.5.2 This test method uses high oxygen pressure to accelerate the test period while making use of lower test temperatures to protect additive ...
SCOPE
1.1 This test method covers a procedure for the determination of the oxidative induction time (OIT) of polyolefin geosynthetics using high-pressure differential scanning calorimetry.  
1.2 The focus of the test is on geomembranes, but geogrids, geonets, geotextiles, and other polyolefin-related geosynthetics are also suitable for such evaluation.  
1.3 This test method measures the oxidative induction time associated with a given test specimen at a specified temperature and pressure.  
1.4 This is an accelerated test for highly stabilized materials. It is applicable only to material whose OIT values under 3.4 MPa of oxygen are greater than 30 min at 150 °C.  
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 8.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-Aug-2020
• ICS: 59.080.70 - Geotextiles
• Technical Committee: D35 - Geosynthetics
• Drafting Committee: D35.02 - Endurance Properties

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:D5885/D5885M −20
Standard Test Method for
Oxidative Induction Time of Polyolefin Geosynthetics by
1
High-Pressure Differential Scanning Calorimetry
This standard is issued under the fixed designation D5885/D5885M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This test method covers a procedure for the determina-
D3895 Test Method for Oxidative-Induction Time of Poly-
tion of the oxidative induction time (OIT) of polyolefin
olefins by Differential Scanning Calorimetry
geosynthetics using high-pressure differential scanning calo-
D4439 Terminology for Geosynthetics
rimetry.
D4491/D4491M Test Methods for Water Permeability of
1.2 The focus of the test is on geomembranes, but geogrids,
Geotextiles by Permittivity
geonets, geotextiles, and other polyolefin-related geosynthetics
D4565 Test Methods for Physical and Environmental Per-
are also suitable for such evaluation.
formance Properties of Insulations and Jackets for Tele-
communications Wire and Cable
1.3 This test method measures the oxidative induction time
D4703 Practice for Compression Molding Thermoplastic
associatedwithagiventestspecimenataspecifiedtemperature
Materials into Test Specimens, Plaques, or Sheets
and pressure.
D8117 Test Method for Oxidative Induction Time of Poly-
1.4 Thisisanacceleratedtestforhighlystabilizedmaterials.
olefin Geosynthetics by Differential Scanning Calorimetry
It is applicable only to material whose OIT values under
E473 Terminology Relating to Thermal Analysis and Rhe-
3.4 MPa of oxygen are greater than 30 min at 150 °C.
ology
E691 Practice for Conducting an Interlaboratory Study to
1.5 The values stated in either SI units or inch-pound units
Determine the Precision of a Test Method
are to be regarded separately as standard. The values stated in
E967 Test Method for Temperature Calibration of Differen-
each system are not necessarily exact equivalents; therefore, to
tial Scanning Calorimeters and Differential Thermal Ana-
ensure conformance with the standard, each system shall be
lyzers
used independently of the other, and values from the two
G88 Guide for Designing Systems for Oxygen Service
systems shall not be combined.
1.6 This standard does not purport to address all of the
3. Terminology
safety concerns, if any, associated with its use. It is the
3.1 Definitions:
responsibility of the user of this standard to establish appro-
3.1.1 For definitions of terms related to geosynthetics, refer
priate safety, health, and environmental practices and deter-
to Terminology D4439.
mine the applicability of regulatory limitations prior to use.
3.1.2 Definitions of terms applying to thermal analysis
Specific precautionary statements are given in Section 8.
appear in Terminology E473.
1.7 This international standard was developed in accor-
3.2 Definitions of Terms Specific to This Standard:
dance with internationally recognized principles on standard-
3.2.1 differential scanning calorimetry (DSC), n—a tech-
ization established in the Decision on Principles for the
nique in which the difference in heat flow inputs into a
Development of International Standards, Guides and Recom-
substance and a reference material is measured as a function of
mendations issued by the World Trade Organization Technical
temperatureortime,whilethesubstanceandreferencematerial
Barriers to Trade (TBT) Committee.
are subjected to a controlled-temperature program. (See Ter-
minology E473.)
1
This test method is under the jurisdiction of ASTM Committee D35 on
Geosynthetics and is the direct responsibility of Subcommittee D35.02 on Endur-
2
ance Properties. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Sept. 1, 2020. Published September 2020. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1995. Last previous edition approved in 2017 as D5885/D5885M – 17. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/D5885_D5885M-20. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D5885/D5885M−20
3.2.2 geomembrane, n—anessentiallyimpermeablegeosyn- from which the test specimen is taken is not addressed, nor
thetic composed of one or more synthetic sheets. (See Ter
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D5885/D5885M − 17 D5885/D5885M − 20
Standard Test Method for
Oxidative Induction Time of Polyolefin Geosynthetics by
1
High-Pressure Differential Scanning Calorimetry
This standard is issued under the fixed designation D5885/D5885M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers a procedure for the determination of the oxidative induction time (OIT) of polyolefin geosynthetics
using high-pressure differential scanning calorimetry.
1.2 The focus of the test is on geomembranes, but geogrids, geonets, geotextiles, and other polyolefin-related geosynthetics are
also suitable for such evaluation.
1.3 This test method measures the oxidative induction time associated with a given test specimen at a specified temperature and
pressure.
1.4 This is an accelerated test for highly stabilized materials. It is applicable only to material whose OIT values under 3.4 MPa
of oxygen isare greater than 30 min at 150 °C.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used
independently of the other, and values from the two systems shall not be combined.
1.6 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 8.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D3895 Test Method for Oxidative-Induction Time of Polyolefins by Differential Scanning Calorimetry
D4439 Terminology for Geosynthetics
D4491/D4491M Test Methods for Water Permeability of Geotextiles by Permittivity
1
This test method is under the jurisdiction of ASTM Committee D35 on Geosynthetics and is the direct responsibility of Subcommittee D35.02 on Endurance Properties.
Current edition approved June 1, 2017Sept. 1, 2020. Published June 2017September 2020. Originally approved in 1995. Last previous edition approved in 20152017 as
D5885/D5885M – 15.D5885/D5885M – 17. DOI: 10.1520/D5885_D5885M-17.10.1520/D5885_D5885M-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D5885/D5885M − 20
D4565 Test Methods for Physical and Environmental Performance Properties of Insulations and Jackets for Telecommunications
Wire and Cable
D4703 Practice for Compression Molding Thermoplastic Materials into Test Specimens, Plaques, or Sheets
D8117 Test Method for Oxidative Induction Time of Polyolefin Geosynthetics by Differential Scanning Calorimetry
E473 Terminology Relating to Thermal Analysis and Rheology
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E967 Test Method for Temperature Calibration of Differential Scanning Calorimeters and Differential Thermal Analyzers
G88 Guide for Designing Systems for Oxygen Service
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms related to geosynthetics, refer to Terminology D4439.
3.1.2 Definitions of terms applying to thermal analysis appear in Terminology E473.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 differential scanning calorimetry (DSC), n—a technique in which the difference in heat flow inputs into a substance and a
reference material is measured as a function of temperature or time, while the substance and reference material are subjected to
a controlle
...