Similarities Between Tg and Tm Polymers
Tg and Tm are two significant parameters that are used to study how polymers respond to changes in temperature. Here are some similarities between Tg and Tm polymers listed below.
- Changes in physical properties occur in both Tg and Tm temperature points.
- Tg and Tm values can be varied on the basis of molecular weights, branching, and monomers of the polymer.
- The rate of heating and cooling affects both Tg and Tm values. Quick heating and cooling can result in differences in Tg and Tm values compared to slow heating or cooling.
- The techniques that are used to measure Tg and Tm values are differential scanning calorimetry (DSC) or thermomechanical analysis (TMA).
Difference Between TG and TM Polymers
Tg and Tm are two significant parameters used to understand how polymers behave. Tg stands for glass transition temperature whereas Tm stands for melting temperature. How stretchy and strong it is determined by the property of the polymers. The properties of the polymer are varied by many things such as molecular weight, flexibility, and crystallinity. Understanding these properties will help us to understand how different polymers behave in different situations.
If a polymer has different melting points then it is made up of multiple components with different molecular weights or structures this means Tg is typically lower than Tm and it is rigid at room temperature. If Tg is higher than Tm that means it doesn’t have a distinct melting point and on heating shows a transition from solid to a rubbery state.