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ASTM D 2238 : 1992 : R2004

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Test Methods for Absorbance of Polyethylene Due to Methyl Groups at 1378 cm
Available format(s)

Hardcopy , PDF

Superseded date

11-11-2014

Language(s)

English

Published date

01-07-2004

Publisher

American Society for Testing and Materials

CONTAINED IN VOL. 08.01, 2015 Describes measurement by infrared absorption spectrophotometry of the 1378.4 cm[-1] band in polyethylene due to methyl groups.

1.1 These test methods cover measurement by infrared absorption spectrophotometry of the 1378.4-cm1 (7.255-m) band in polyethylene due to methyl groups. (1, 2, 4-7) Two test methods are covered:

1.1.1 Test Method A uses compensation with a standard sample film or wedge of known methyl content.

1.1.2 Test Method B uses compensation with a wedge of polymethylene or a polyethylene of known low methyl content.

1.2 These test methods are applicable to polyethylenes of Types I (density 910 to 925 kg/m3), II (density 926 to 940), and III (density 941 to 965).

Note 1—For determination of density, see Specifications D 1248.

Note 2—In cases of Type III polyethylene with densities greater than 0.950 g/cm3, different results are obtained with the two test methods.

1.3 The values stated in SI units are to be regarded as the standard. The values given in brackets are for information only.

1.4 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. Specific hazards statements are given in Section 7.

Note 3—There is no similar or equivalent ISO standard covering the subject matter of these test methods.

Committee
D 20
DocumentType
Test Method
Pages
7
ProductNote
Reconfirmed 2004
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

ASTM D 5576 : 2000 : R2013 Standard Practice for Determination of Structural Features in Polyolefins and Polyolefin Copolymers by Infrared Spectrophotometry (FT-IR)
ASTM F 755 : 1999 : R2011 Standard Specification for Selection of Porous Polyethylene for Use in Surgical Implants
ASTM D 6645 : 2018 Standard Test Method for Methyl (Comonomer) Content in Polyethylene by Infrared Spectrophotometry

ASTM D 618 : 2013 : REDLINE Standard Practice for Conditioning Plastics for Testing
ASTM E 177 : 2014 : REDLINE Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
ASTM D 1248 : 2016 : REDLINE Standard Specification for Polyethylene Plastics Extrusion Materials for Wire and Cable
IEEE/ASTM SI_10-2010 American National Standard for Metric Practice
ASTM E 168 : 2016 Standard Practices for General Techniques of Infrared Quantitative Analysis

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PDF - English
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