What is a glass crossing?

polymers that are not structured as crystals in a state of changing the molecular level with a temperature other than crystalline substances. The temperature of the glass crossing transition is a point in which the polymer is subject to a change in the condition. The materials above this temperature are generally more flexible and they are fragile at colder temperatures because the molecules cannot bend or easily move to different places. The glass transition can only be seen in solids that do not have molecules arranged in crystals; They are called amorphous and include glass, gels and thin movies. Some materials such as rubber have crystalline and amorphous molecules. Temperatures for each in one object may vary. The crystal structures are melted at a certain temperature, but the structures with both types of molecules tend to flow for a long time. Amorphic components can be strong at one temperature, while crystalline molecules may be in molten state if they have already undergone a phase transition. In contrast to the melting substance with the transition polymer will be nAdale to heat as soon as the transition temperature of the transition. Nevertheless, the thermal capacity of the polymer increases, so the process that is subject to the transition of the second order is called. Instead, crystalline structures absorb heat and temperatures do not increase while melting.

If it should be physically bent, the object would bend like a piece of rubber when it is below the glass transition point. It could also remain solid if molecular bonds are strong enough to withstand strength. Objects with molecules that are not so strong will break or break under a glass -gauge temperature. Plastic dashboard and plastic pallets often respond in a similar way with temperature changes.

amorphous materials require a certain amount of thermal energy to change their molecular structure. The glass transition depends on the energy needed to change the condition of a particular material. This phenomenon differs from melting also because it is not so obvious. MaterialsOften, they do not show related properties after switching from a glass unless they are used for strength. However, melting is visually obvious and has a more dramatic effect, for example, when a crystalline ice cube melts into water that flows easily over the surface.