Molecular weight reduction degradation Mass loss

Determining the Molecular Weight Reduction and Mass Loss of Degraded Polymer... 

Chemical changes occur when a fluoroplastic part is exposed to the few compounds and elements that can degrade them. Chemical attack over time can result in changes in surface or bulk composition, and a loss of mechanical properties such as tensile or burst strength. The loss of properties is because of a reduction in molecular weight or mass loss of the part. Degradation can introduce impurities into the process stream in the extreme case when massive chemical degradation takes place. 

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