Possible stretched exponential parametrization for humidity absorption in polymers.

Area of Science:

• Materials Science
• Polymer Physics
• Physical Chemistry

Background:

• Polymer thin films exhibit complex transient current behavior under constant voltage.
• This electrical irregularity is influenced by absorbed humidity in both hydrophilic and hydrophobic polymers.

Purpose of the Study:

• To investigate the relationship between humidity absorption and transient current characteristics in polymer thin films.
• To evaluate the suitability of stretched exponential models for describing humidity absorption dynamics.

Main Methods:

• Analysis of transient current characteristics in polymer thin films.
• Application and comparison of various stretched exponential models.
• Modeling of humidity absorption as a function of time.

Main Results:

• Transient current in polymer thin films shows irregular behavior under constant voltage.
• Humidity absorption significantly impacts these electrical characteristics.
• A class of stretched exponential absorption models accurately describes humidity uptake over time.

Conclusions:

• Stretched exponential models provide a robust framework for understanding humidity absorption in polymers.
• This modeling approach enhances the predictability of polymer thin film electrical properties under varying humidity.