Material principle of biodegradable mineral water bottle

The reaction process in which long polymer chains split into shorter parts under the action of oxygen. The polymer product exposed to the air absorbs oxygen and then oxidizes to form hydroperoxide, which is further decomposed to generate active centers to form free radicals, and then a free radical chain reaction (ie, auto-oxidation process) occurs. The oxidative degradation varies depending on the molecular structure of the polymer. The presence of oxygen can also aggravate the destructive effects of light, heat, radiation and mechanical forces on the polymer, causing it to undergo more complex degradation reactions. Oxidative degradation is the main reason for the deterioration of the physical and mechanical properties of polymer products. Adding antioxidants to the polymer can slow down oxidative degradation.

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