ASTM D5208 – 14

oxo-biodegradables 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 are a one stop shop. Our team have over 120 years of combined experience in the testing industry and can advise you on what type of accelerated weathering testing you need. No matter the question, product, or standard, contact us today for guidance on testing for your product. With our UKAS accreditation, we can test to anything that falls within the boundaries of our extensive flexible scope. impact will always do their best to help you with your testing needs and our experienced weathering consultant, Jo, will advise you on the best method of testing.

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