Will two polymer spheres with a diameter of 300nm, surface potential of -30mv, a
ID: 702762 • Letter: W
Question
Will two polymer spheres with a diameter of 300nm, surface potential of -30mv, and coated with 2.2nm thick layer of grafted hydrophilic chains remain stable as dispersion in sea water?Hamaker constant: 4.2x10^-20j 0.154M NaCl 25 Celsius Distance between spheres: 0.1197nm Energy of interaction: -3.86x10^-18J Will two polymer spheres with a diameter of 300nm, surface potential of -30mv, and coated with 2.2nm thick layer of grafted hydrophilic chains remain stable as dispersion in sea water?
Hamaker constant: 4.2x10^-20j 0.154M NaCl 25 Celsius Distance between spheres: 0.1197nm Energy of interaction: -3.86x10^-18J
Hamaker constant: 4.2x10^-20j 0.154M NaCl 25 Celsius Distance between spheres: 0.1197nm Energy of interaction: -3.86x10^-18J
Explanation / Answer
Stability of polymer suspensions is easily calculated by usingt the Hamekar constant and surface energy values as detailed vbelow.