1. Physical aging through water absorption
1.1 Hydrophilicity of a polymer in relation to its structure
1.1.1 Experimental characterization of hydrophilicity
The hydrophilicity of a polymer can be gauged from the water contentwm (generally expressed in percent by mass), which it can reach at equilibrium in an isothermal medium with a constant hygrometric rate close to 100% RH (relative hygrometry).
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Note that the time after which equilibrium is reached is of the order of L2/D, L being the thickness of the sample and...
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Physical aging through water absorption
Chemical aging in the presence of water. Hydrolysis
References
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