Structural relaxation

1. What is structural relaxation?
2. What is structural relaxation time?
3. What is beta relaxation?
4. What is the Glass transition temperature?

What is structural relaxation?

The approach of the structure towards equilibrium as a response to this temperature jump is called structural relaxation and it has been studied extensively, both for practical reasons and for a better theoretical understanding of the glass transition phenomena [1,2].

What is structural relaxation time?

the structural relaxation time of a supercooled liquid rises rapidly with decreasing temperature, reaching values of minutes or even hours at temperatures around TG. From: Theory of Simple Liquids (Fourth Edition), 2013.

What is beta relaxation?

Proposed in 1969 by Martin Goldstein, JG β-relaxation were described as a secondary relaxation mechanism required to explain the viscosity behavior of liquids approaching the glass transition in the potential energy landscape picture presented in Goldstein's seminal 1969 paper.

What is the Glass transition temperature?

Glass transition temperature is the temperature at which an amorphous polymer changes from a hard/glassy state to a soft/leathery state, or vice versa. Tg is directly related to a material's strength and capabilities in any given end-use application.