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GB/T 36214.3-2018Plastics -- Determination of average molecular mass and molecular mass distribution of polymers using size-exclusion chromatography -- Part 3: Low-temperature method (English PDF)

Also coversGBT36214.3-2018

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

May 14, 2018

Implementation date

December 1, 2018

Scope

GB/T 36214.3-2018 (Plastics -- Determination of average molecular mass and molecular mass distribution of polymers using size-exclusion chromatography -- Part 3: Low-temperature method) is available as an English-translated PDF.

GB/T 36214.3-2018 — This part of GB/T 36214 specifies the use of organic eluents at 60 ° C ~ 180 ° C, by volume exclusion chromatography (SEC) A method of determining the average molecular weight and molecular weight distribution of a polymer. Calculate the average molecular weight and fraction based on the calibration curve constructed from the polymer standard The sub-quantity distribution, therefore the test method is a relative method (see Appendix A and Appendix A of GB/T 36214.1-2018).

Document preview — GB/T 36214.3-2018

National Standard of the People's Republic of China

ICS: 83.080.20
Classification: G 31

Issued by: State Administration for Market Regulation, China National Standardization Administration

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 reagents
5.1 eluent
5.2 Evaluation of column reagents

Foreword

GB/T 36214 "Plastics volume exclusion chromatography for the determination of the average molecular weight and molecular weight distribution of polymers" is divided into five parts.

--- Part 1. General;

--- Part 2. Universal Correction Method;

--- Part 3. Low temperature method;

--- Part 4. High temperature method;

--- Part 5. Light scattering method.

This part is the third part of GB/T 36214.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

This section uses the translation method equivalent to ISO 16014-3.2012 "plastic volume exclusion chromatography to determine the average molecular weight of the polymer

And molecular weight distribution Part 3. Low temperature method.

This part was proposed by the China Petroleum and Chemical Industry Federation.

This part is under the jurisdiction of the National Plastics Standardization Technical Committee (SAC/TC15).

This section was drafted by. China National Petroleum Corporation Petrochemical Research Institute, Guangzhou Synthetic Materials Research Institute Co., Ltd.

Zhonglan Chenguang Chemical Research and Design Institute Co., Ltd., Beijing Puli Taike Instrument Co., Ltd., Guangzhou Quality Supervision and Inspection Institute.

1 Scope

This part of GB/T 36214 specifies the use of organic eluents at 60 ° C ~ 180 ° C, by volume exclusion chromatography (SEC)

A method of determining the average molecular weight and molecular weight distribution of a polymer. Calculate the average molecular weight and fraction based on the calibration curve constructed from the polymer standard

The sub-quantity distribution, therefore the test method is a relative method (see Appendix A and Appendix A of GB/T 36214.1-2018).

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 36214.1-2018 Determination of the average molecular weight and molecular weight distribution of polymers by volume exclusion chromatography

Points. General (ISO 16014-1.2012, IDT)

ISO 472 plastic terminology and its definition (Plastics-Vocabulary)

ISO 16014-2 Determination of average molecular weight and molecular weight distribution of polymers by volume exclusion chromatography - Part 2. General

Positive method (Plastics-Determination of averagemolecularmassandmolecularmassdistributionofpoly-

Mersusingsize-exclusionchromatography-Part 2.Universalcalibrationmethod)

3 Terms and definitions

The terms and definitions defined by ISO 472 and GB/T 36214.1-2018 apply to this document.

4 Principle

See Chapter 4 of GB/T 36214.1-2018.

5 reagents

5.1 eluent

The general requirements for the eluent are given in 5.1 of GB/T 36214.1-2018.

See Appendix B for eluents used at SEC below 60 °C.

Note. This method does not apply to SEC testing of water soluble polymers with water as an eluent below 60 °C.

5.2 Evaluation of column reagents

See 5.2 of GB/T 36214.1-2018.

Several low molecular weight compounds are available to determine the theoretical plate number, asymmetry factor, and resolution factor of the column. Such as when using tetrahydrofuran

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 36214.1-2018Plastics -- Determination of average molecular mass and molecular mass distribution of polymers using size-exclusion chromatography -- Part 1: General principles

ISO 16014 · ISO 472

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