Q12.109P - Chemistry: Molecular Nature Of Matter And Change

Question

What factor(s) influence the viscosity of a polymer solution? What factor(s) influence the viscosity of a molten polymer? What is a polymer glass?

Step-by-Step Solution

Answer

The resistance to the flow of a liquid is known as viscosity.

Step 1: Definition

The viscosity of a polymer solution is an indication of the molecular weight of the polymer.

The factor that influences the viscosity of the polymer is temperature, concentration, molecular weight, shear rate, water salinity, and divalent ions.

Step 2: Molten polymer

Molten polymers are those which have both a vicious and an elastic component.

The factor that influences the viscosity of a molten polymer is the molecular weight of the polymer, which means the greater the weight more the viscosity.

Step 3: Polymer glass

Polymer glass is an uncrystallized material formed when intermolecular forces exert a greater effect as the temperature decreases.