ASTM D5208 – 14

photo-degradables plastics – ASTM D5208 – 14 is standard practice for fluorescent ultraviolet (UV) exposure of photodegradable plastics – oxo-photo biodegradable

why should you test?

Standard tests, such as ASTM D5208-14, should be carried out on the products made up of oxo-biodegradables in order to verify and fully understand the biodegradation process.  Due to the various catalytic additives added to plastics, the rate of degradation and how well it will degrade depends on the environment and if the correct factors are present.

ASTM D5208 – 14

This method involves the conditioning of the photodegradable plastics in a Fluorescent UV weathering chamber for a period of time and periodically assess the degradation process compared with conventional plastic.

The degradation endpoint of the plastics can be determined by a tensile test revealing the change of tensile strength and elongation. Other properties that can be measured are molecular weight, using Gel permeation chromatography techniques.

In accordance with EPA regulation 40 CFR Part 238, a polyethylene or polypropylene material cannot be considered as photodegradable when tested in accordance with this practice if exposure of longer than 250 light hours using Cycle A is needed to produce degradation end point determined in accordance with standard tensile tests.

ASTM D5208 - 14 - UV Expose chamber


why impact?

Impact Solutions is an independent materials testing and innovative problem-solving provider. Our dynamic team is flexible and adaptable in using their diverse range of knowledge and skills to offer bespoke solutions. Members of impact’s team have over 30 years of polymer experience and are internationally regarded as product and material experts. We can often identify potential sources of weakness in products without even undertaking testing. We will work with you and believe in developing commercially focused and sustainable results for our customers.

Find out more by getting in touch with one of our experts.

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