8. Polymer Solubility Quiz

What defines the ability of polymers to be dissolved in liquid solutions?

• Solubility

• Viscosity

• Melting point

• Density

Which type of solvents tend to dissolve nonpolar polymers?

• Polar solvents

• Nonpolar solvents

• Acidic solvents

• Basic solvents

What is NOT the factors for the solubility of polymers?

• Temperature

• Molecular Weight

• Molecular Structure

• Glass Transition Temperature

What type of polymers do not dissolve but only swell with the solvent?

• Nylon-66

• Cross-linked polymers

• PTFE

• Linear PE

What is the change in Gibbs free energy equation during the solution process?

• ΔG = ΔH / TΔS

• ΔG = ΔH - TΔS

• ΔG = ΔH * TΔS

• ΔG = ΔH + TΔS

Dissolution of polymers is different compared to the non-polymeric substances mainly due to their

• Volume fraction

• Structure

• Color

• Cohesive energy

Solubility of polymers consisted of steps as below EXCEPT

• Polymer chains swelling

• Polymer chains disentangle

• Polymer chains dispersion

• Polymer chains recoiled

What does the Hansen model utilize to quantify solvent-polymer compatibility?

• δP

• δH

• All of the above

• δD

This picture represents ______

• Gibbs free energy change

• Two-Dimensional Lattice Model

• Flory-Huggins Theory

• Hansen's Solubility Parameters

What assumption can we make for the dissolution of polymer that occurs at constant volume and constant pressure?

• ΔH = ΔE / Ǿ1Ǿ2 (∂1-∂2)²

• ΔH = ΔE

• ΔH = ΔE + Ǿ1Ǿ2 (∂1-∂2)²

• ΔH = ΔE - Ǿ1Ǿ2 (∂1-∂2)²