High molecular weight glassy polyme

Since G ic cr ", the VP model gives for high molecular weight (M > 84/c) glassy polymers... 

The elongation at break of a sample is the strain at which at which it breaks. This value varies widely depending on polymer type and processing conditions. Glassy amorphous polymers typically exhibit low elongations at break because their chains cannot slide past one another. In rubbery amorphous polymers the situation is somewhat different. High molecular weight... 

When both components of a binary mixture have high molecular weights normal for commercial polymers, the entropy of mixing is negligible in the free energy of mixing expression [48]. The nonequilibrium interaction parameter for binary compatible mixtures in the glassy state is related to the parameter for volume interaction by [49]... 

The penetration of water and OH ions into the glassy matrix, leading to the formation of a narrow penetration zone that is the equivalent of the gel layer observed with high-molecular-weight polymers. 

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