The performance of photo-oxidative degradation is that after photo-oxidative degradation, the packaging bag film breaks, and its elongation must retain a certain value. After thermal oxidative degradation, the weight-average molecular weight Mw is less than 10,000.

Photooxygen-degradable packaging bags are currently a controversial technical route in the field of degradable packaging bags.
Photooxygen-degradable packaging bags refer to the process in which polymer chains are degraded in an orderly manner under the influence of ultraviolet rays. If an oxidizing agent with a light-sensitive effect is added to the raw material of the packaging bag, the process of photo-oxidation reaction can be accelerated and it can be degraded quickly.

Compared with PLA fully biodegradable packaging bags and starch-based biodegradable packaging bags, photo-oxidative degradation raw materials are added with oxygen-containing biodegradable material additives in terms of use and degradation performance. The competitive advantages of plastic products are: harmless, tasteless, non-toxic, energy-saving materials, lower overall costs, reusable, easy to use and extensive. Photooxygen degradation packaging bags are products that can satisfy the above competitive advantages.

However, some current studies believe that the main raw material of photo-oxidative degradation materials is still PE. On the other hand, photo-oxygen degradation only breaks large pieces of plastic into small fragments that cannot be seen by the naked eye, and has not achieved full degradation. Ordinary PE packaging bags can be picked up to take out some of them, but such small fragments that are invisible to the naked eye cannot be picked up, and they will cause certain harm if they are scattered into the soil. It can only be said that photo-oxidative degradation packaging bags are much better than ordinary plastic packaging bags. Specific to use, it can be reasonably designed and customized according to its own product conditions.

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