Polymer molecular weight can be directly estimated using light scattering techni
ID: 545691 • Letter: P
Question
Polymer molecular weight can be directly estimated using light scattering technique. Why this method called "absolute method"?
In polymer light scattering experiment, list at least one reason that the output light intensity is always smaller then the incident light intensity?
What absorption coefficient (absorption coefficient) is used often in small molecules and turbidity (scattering turbiding) is otter used in polymer, through both pretty much the same in quantity/units at materials bulk level.
Explanation / Answer
1. Static Light Scattering is a non-invasive technique for characterizing macromolecules and other particles. In contrast to other methods, it does not require outside caliberation standards. For macromolecules much smaller than the wavelength of the incident light, the data are analyzed to determine the molar mass or molecular weight and radius of particles.
Thus it is an absolute method.