ASTM D5477-95

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
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Designation: D 5477 – 95 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
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Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Practice for
Identification of Polymer Layers or Inclusions by Fourier
Transform Infrared Microspectroscopy (FT-IR)
This standard is issued under the fixed designation D 5477; 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.
1. Scope 3.1.2 For units, symbols, and abbreviations used in this
practice, refer to Terminology E 131 or Practice E 380.
1.1 This practice describes the techniques used for detecting
two different polymer entities as follows:
4. Significance and Use
1.1.1 Abnormal specks or spots on a surface or in the film
4.1 A speck will ultimately cause a failure to occur by virtue
that are objectionable as defects and
of its appearance in a film or by the decrease in electrical or
1.1.2 Layers of different polymeric sheets commonly used
mechanical properties in the polymer substrate (see Specifica-
as barrier films made by coextrusion.
tion D 1248).
1.2 The values stated in SI units are to be regarded as the
4.2 The analysis of composite layers for barrier purposes by
standard. The values given in parentheses are for information
microscopic Fourier transform infrared spectroscopy (FT-IR)
only.
can indicate the adequacy of the barrier tape or indicate why a
1.3 This standard does not purport to address all of the
barrier may be defective (a missing layer or hole in the layer or
safety concerns, if any, associated with its use. It is the
poor coextrusion practice). Fig. 1 represents a typical multi-
responsibility of the user of this standard to establish appro-
layer film.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. Specific hazard
5. Apparatus
statements are given in Section 7.
−1
5.1 FT-IR Spectrophotometer, with nominal 4-cm resolu-
NOTE 1—There is no similar or equivalent ISO standard.
tion (see Practices E 168).
5.2 Microsampling Accessory, accommodated into the
2. Referenced Documents
FT-IR for microscopic infrared and visible light analysis, with
2.1 ASTM Standards: 5
nominal 10-μm resolution on the infrared mode.
D 883 Terminology Relating to Plastics
5.3 Optical Microscope, equipped with cross-polarized light
D 1248 Specification for Polyethylene Plastics Molding and
and phase contrast accessories.
Extrusion Materials
5.4 Hot-Stage, which is accommodated into the optical
D 1600 Terminology for Abbreviated Terms Relating to
microscope.
Plastics
5.5 Microtome.
TM
E 131 Terminology Relating to Molecular Spectroscopy 6
5.6 Surlyn Ionomer, 1.25-mm thick.
E 168 Practices for General Techniques of Infrared Quanti-
5.7 Cyano-Acrylate Adhesive.
tative Analysis
5.8 Micrometer, capable of measuring to 60.0025 mm
E 380 Practice for Use of the International System of Units
(0.0001 in., 0.1 mil).
(SI) (the Modernized Metric System)
6. Material
3. Terminology
6.1 Cyano-Acrylate Adhesive.
3.1 Definitions:
3.1.1 For definitions of some of the terms used in this 7. Hazards
practice, refer to Terminologies D 883 and D 1600.
7.1 Use gloves when plaques are prepared using a heated
press. Take care to avoid burns when handling microscopic
slides with the hot plate.
This practice is under the jurisdiction of ASTM Committee D-20 on Plastics
7.2 The optical bench of the FT-IR spectrophotometer
and is the direct responsibility of Subcommittee D20.70 on Analytical Methods.
Current edition approved Feb. 15, 1995. Published April 1995. Originally contains a laser. To avoid eye injury, do not stare directly into
published as D 5477 – 93. Last previous edition D 5477 – 93.
the laser beam.
The practice title was revised in 1995 to reflect the use of a microscope
(microspectroscopy). Figure 2 was added at that time to clarify the practice.
Annual Book of ASTM Standards, Vol 08.01.
3 5
Annual Book of ASTM Standards, Vol 14.01. Spectra-Tech IR-Plan III transmittance-reflectance microscope.
4 6
Annual Book of ASTM Standards, Vol 14.02. Metal salt of carboxylated polyethylene.
D 5477
FIG. 1 Position and Function of Materials in Typical Multilayer Films
7.3 The cyano-acrylate adhesive will attach itself to the support and a cyano-acrylate adhesive is used to bond the
TM
fingers and skin. Be careful to prevent this from occurring. flexible package material to the Surlyn .
8.3 The entire sandwich is then microtomed into suitable
8. Specimen Preparation
sections.
8.1 It is necessary to microtome a thin
...