ASTM D 2238 : 1992 : R1999
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Standard Test Methods for Absorbance of Polyethylene Due to Methyl Groups at 1378 cm
Hardcopy , PDF
11-11-2014
English
10-03-1999
Important note : Users cannot be edited or removed once added to your Multi user PDF.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.
| Committee |
D 20
|
| DocumentType |
Test Method
|
| Pages |
7
|
| ProductNote |
Reconfirmed 1999
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Superseded
|
| SupersededBy |
1.1 These test methods cover measurement by infrared absorption spectrophotometry of the 1378.4-cm -1 (7.255[mu]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/m ), II (density 926 to 940), and III (density 941 to 965).
Note 1-For determination of density, see Specifications D1248. Note 2-In cases of Type III polyethylene with densities greater than 0.950 g/cm , 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 parentheses are for information only.
1.4 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.> 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.| ASTM D 5576 : 2000 : R2013 | Standard Practice for Determination of Structural Features in Polyolefins and Polyolefin Copolymers by Infrared Spectrophotometry (FT-IR) |
| ASTM D 6645 : 2018 | Standard Test Method for Methyl (Comonomer) Content in Polyethylene by Infrared Spectrophotometry |
| ASTM D 7399 : 2018 | Standard Test Method for Determination of the Amount of Polypropylene in Polypropylene/Low Density Polyethylene Mixtures Using Infrared Spectrophotometry |
| ASTM F 755 : 1999 : R2011 | Standard Specification for Selection of Porous Polyethylene for Use in Surgical Implants |
| 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 |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.