Hansen Solubility Parameter (G6) Flashcards
Goran lecture 6 of 6
1
Q
What is Hansens solubility parameter used for?
A
- To predict the solubility of polymers in certain solvents
2
Q
What are the 2 equation to calculate the total solubility parameter (sum of all the forces)
(2)
A
3
Q
When using a mixture of 2 miscible solvents how do we calculate the overall dispersion forces, polar forces and hydrogen forces?
(3)
A
4
Q
What is Hansen sphere space theory?
A
- A method of predicting solubility of different polymers in a solvent
- Using the paramaters (Dispersion forces, Polar forces and Hydrogen forces) a sphere with radius R0 can be drawn on a 3d plot
- If the solvent is plotted within this sphere, then they have similar Hansen parameters therefore being a good solvent
5
Q
What is the equation to calculate Ra, which is the radius of the difference between the solvent and the polymer
A
6
Q
What is meant then if Ra<R0
A
The radius of the sphere indicating the difference between the Hansen parameters of the solvent and polymer is smaller than the Polymer Hansen Parameters, indicating that the solvent is a good one
