“…4 Mechanical and thermal properties of the blends exhibited gross synergism in their blend characteristics. 3,5 In general, miscibility can be achieved by specific interaction between the blend constituents such as hydrogen bonding, [6][7][8][9] ion -dipole interaction, 10 dipole -dipole interaction, 11 and chemical reaction 1,2,[12][13][14][15][16][17][18] between the blend constituents due to the fact that they are usually governed by a negative free energy of mixing, i.e., ⌬Gm ϭ ⌬H Ϫ T ⌬ S Ͻ 0 ⌬Gm ϭ change in free energy of mixing T ϭ absolute temperature That means that either ⌬H, the heat of mixing, should be negative or ⌬S, the entropy of mixing must be higher as compared to ⌬H.…”