Work Item
ASTM WK65360

New Test Method for Determining the Carbonyl Index of a polyolefin plastic material using Infra-Red Spectrometry (FT-IR).

1. Scope

The development of test methods, specifications, recommended practices, nomenclature, definitions, and the stimulation of research relating to plastics, their raw materials, components, and compounding ingredients, and to finished products made from plastics such as sheets, rods, tubes, pipes, cellular materials, and molded or fabricated articles.


FT-IR; Infrared spectrometry; plastics; carbonyl index; CI; polymers.


A standard test methodology for measuring the Carbonyl Index (also known as CI) is of need and would be very timely. There is currently no standard methodology for measuring this important index. Even in academia we have found that different groups are using different methodologies. The index is important as it has a direct link to the way a plastic material would degrade under accelerated ageing techniques, as well as its potency to biodegrade. The data obtained may be used for quality control, storage lifetimes as well as research and development of plastic materials, samples and final products. The users are quality control laboratories and services. Industrial R&D departments and the academic community looking to compare existing and novel plastic materials.

The title and scope are in draft form and are under development within this ASTM Committee.


Developed by Subcommittee: D20.70

Committee: D20

Staff Manager: Alyson Fick

Work Item Status

Date Initiated: 10-12-2018

Technical Contact: Gavin Hill

Item: 001

Ballot: D20.70 (20-02)

Status: Will Reballot Item

Item: 001

Ballot: D20.70 (21-01)

Status: Will Reballot Item