This category contains the polymer structure. The molecules of the polymer chain is a straight-line or short branches. When it receives the heat is melting a viscous liquids cool down and when it will freeze.
This type of polymer structure The molecular chain of the polymer is a linear or branched short. When heated to soften. And a melt viscosity fluids And as it cools, it hardens.
This type of polymer is the structure. The polymer chain molecules are linear or branched short. When the heat is weak. The melting liquid and viscous. And when cooled to harden.