The glass temperature transition is for glass, polymers, etc. (amorphous or semicrystalline materials), but not for leather.
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The -125 degrees indicate the transition temperature of Polyethylene from glass.
Depending on the polymerization, the glass transition temperature will be between -13 C and -8 C; that's 8.6 F to 17.6 F.
The glass transition temperature of phosphatidylcholine, a common phospholipid, can vary depending on its specific structure and environment. It typically ranges between -10°C to -20°C. At this temperature, the lipid undergoes a transition from a rigid glassy state to a more fluid-like state.
The glass transition temperature is the temperature at which an amorphous solid transitions from a rigid, glassy state to a rubbery state, without undergoing a distinct phase change. The melting point is the temperature at which a solid material transitions into a liquid state. The key difference is that the glass transition is a change in the physical properties of a material, while melting involves a change in its phase.
The glass transition temperature of Nylon 66 is typically around 50-60°C. This is the temperature at which the material transitions from a hard, glassy state to a softer, rubbery state.