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Norm

ISO 3146:2022

Issue date: 2022 03 11

Plastics — Determination of melting behaviour (melting temperature or melting range) of semi-crystalline polymers by capillary tube and polarizing-microscope methods

This document specifies two methods for evaluating the melting behaviour of semi-crystalline polymers. a) Method A: Capillary tube This method is based on the changes in ...
Valid
Publisher:
International Organization for Standardization
Format:
Digital | 9 Pages
Language:
English

This document specifies two methods for evaluating the melting behaviour of semi-crystalline polymers.

a) Method A: Capillary tube

This method is based on the changes in shape of the polymer. It is applicable to all semi-crystalline polymers and their compounds.

NOTE 1   Method A can also be useful for the evaluation of the softening of non-crystalline solids.

b) Method B: Polarizing microscope

This method is based on changes in the optical properties of the polymer. It is applicable to polymers containing a birefringent crystalline phase. It might not be suitable for plastics compounds containing pigments and/or other additives which can interfere with the birefringence of the polymeric crystalline zone.

NOTE 2   Another method applicable to semi-crystalline polymers is described in ISO 11357-3.

ISO 3146:2022
2022 03 11
Plastics — Determination of melting behaviour (melting temperature or melting range) of semi-crystal...
Norm
ISO 3146:2000
2000 05 25
Plastics — Determination of melting behaviour (melting temperature or melting range) of semi-crystal...
Norm
ISO 3146:1985
1985 12 19
Plastics — Determination of melting behaviour (melting temperature or melting range) of semi-crystal...
Norm