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ASTM F1698-02(2008)..
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ASTM F1701-12
ASTM F1732-12
ASTM F1735-09
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ASTM D6474-12
Standard Test Method for Determining Molecular Weight Distribution and Molecular Weight Averages of Polyolefins by High Temperature Gel Permeation Chromatography
STANDARD published on 15.12.2012
The information about the standard:
Designation standards: ASTM D6474-12
Note: WITHDRAWN
Publication date standards: 15.12.2012
SKU: NS-35278
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: American technical standard
Category: Technical standards ASTM
The category - similar standards:
Annotation of standard text ASTM D6474-12 :
Keywords:
gel permeation chromatography, molecular weight average, molecular weight distribution, polyolefin, size exclusion chromatography, ICS Number Code 83.080.20 (Thermoplastic materials)
Additional information
| Significance and Use | ||||||||||||
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5.1 This test method measures the molecular weight distribution and molecular weight averages of polyethylene (except LDPE) and polypropylene resins. Differences in molecular weight and molecular weight distribution significantly affect physical properties, such as morphology, strength, melt flow etc., and as a result, the final properties of products made from these resins. |
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| 1. Scope | ||||||||||||
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1.1 This test method covers the determination of molecular weight distributions and molecular weight averages of linear polyolefins by high temperature gel permeation chromatography (GPC). This test method uses commercially available polystyrene standards and equipment and is applicable to polyethylenes (excluding high pressure low density polyethylene–LDPE) and polypropylenes soluble in 1,2,4-trichlorobenzene (TCB) at 140°C. This test method is not absolute and requires calibration. 1.2 The values stated in SI units,
based on IEEE/ASTM S1-10, are to be regarded as the standard.
1.3 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. |
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| 2. Referenced Documents | ||||||||||||
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