ASTM-D5296 2011

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D5296-11 Standard Test Method for Molecular Weight Averages and Molecular Weight Distribution of Polystyrene by High Performance Size-Exclusion Chromatography

Published By	Publication Date	Number of Pages
ASTM	2011	13

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Category: ASTM

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Description

ASTM D5296-11

Historical Standard: Standard Test Method for Molecular Weight Averages and Molecular Weight Distribution of Polystyrene by High Performance Size-Exclusion Chromatography

ASTM D5296

Scope

1.1 This test method covers the determination of molecular weight (MW) averages and the distribution of molecular weights for linear, soluble polystyrene by high-performance size-exclusion chromatography (HPSEC). This test method is not absolute and requires the use of commercially available narrow molecular weight distribution (MWD) polystyrene standards for calibration. This test method is applicable for samples containing molecular weight components that have elution volumes falling within the elution volume range defined by polystyrene standards (that is, molecular weights generally from 2000 to 2 000 000 g·mol⁻¹).

1.2 The HPSEC is differentiated from traditional size-exclusion chromatography SEC (also referred to as gel permeation chromatography (GPC)) in that the number of theoretical plates per metre with an HPSEC system is at least ten times greater than that for traditional SEC (see Terminology D883 and Practice D3016). The HPSEC systems employ low-volume liquid chromatography components and columns packed with relatively small (generally 3 to 20 μm) microporous particles. High-performance liquid chromatography instrumentation and automated data handling systems for data acquisition and processing are required.

1.3 The values stated in SI units are to be regarded as the standard.

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 precautionary statements are given in Section 9.

Note 1—There is no known ISO equivalent to this standard.

Keywords

high-performance size exclusion chromatography (HPSEC); molecular weight average; molecular weight distribution; polystyrene: Gel permeation chromatography (GPC); High-performance size-exclusion chromatography (HPSEC); Molecular weight–distribution; Polymers; Polystyrene (PS); Size-exclusion chromatography (SEC)

ICS Code

ICS Number Code 13.300 (Protection against dangerous goods)

DOI: 10.1520/D5296-11

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology Summary of Test Method Significance and Use
2	Units and Symbols Apparatus TABLE 1 FIG. 1
3	Reagents and Materials
4	Hazards Preparation of Apparatus Preparation of Solutions
5	Performance Requirements FIG. 2 FIG. 3
6	Calibration
7	Procedure FIG. 4 FIG. 5 FIG. 6
8	Calculation FIG. 7
9	Report Precision and Bias TABLE 2 TABLE 3 TABLE 4 TABLE 5 TABLE 6 TABLE 7 TABLE 8
10	Keywords X1. SAMPLE CALCULATIONS FROM SECTIONS TABLE X1.1
11	X2. DERIVATION OF WEIGHT DIFFERENTIAL AND CUMULATIVE MOLECULAR WEIGHT DISTRIBUTION FUNCTIONS X2.1
12	X2.2 X2.3 FIG. X2.1
13	FIG. X2.2

Additional information

Standard Title	D5296-11 Standard Test Method for Molecular Weight Averages and Molecular Weight Distribution of Polystyrene by High Performance Size-Exclusion Chromatography
Published Code	ASTM
Publication Date	2011
Pages Count	13