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Scientists have monitored the recovery dynamics of acrylic-coated surfaces with elevated relative humidity (RH) through atomic force microscopes.
degree and rate of recovery were found to be closely related to the glass transition temperature (Tg) of polymers and RH. This phenomenon is explained by the theory of viscosity elastic mechanics, where mechanical properties such as the elastic modality and viscosity of polymers have an effect on dynamics and recovery
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new insights
experimental data show that polymers experience viscous elasticity changes at higher RH levels due to water absorption. It is believed that this behavior can provide new insights in the field of research, such as controlled repair of coatings. The researchers believe that this experimental method will help to better understand the mechanical properties of the coating under stray environmental conditions.
the study has been published in Advances in Organic Coatings, 146, September 2020.
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