AMPP Basic Corrosion Certification Practice Exam

The factor that contributes to the degradation of polymers through 'swelling' is water absorption. When polymers absorb water, the water molecules penetrate the polymer structure, causing it to swell. This process disrupts the intermolecular forces holding the polymer chains together, leading to changes in the physical properties of the material, such as increased volume and decreased mechanical strength.

Polymers are often sensitive to moisture, and their ability to absorb water can significantly affect their performance and longevity in various applications. The swelling can also enhance the permeability of the polymer to other substances, further accelerating degradation processes. Understanding the impact of water absorption is crucial for predicting the behavior of polymeric materials in environments where they may be exposed to moisture, which is common in many industrial and consumer applications.