I have tried to increase the LCST of the thermosensitive polymer by adding natural polymer to it. Now i have to know how to check the change in the LCST, is there a simple way to find it other than using DSC or UV with temperature controller?
Can some one suggest me a simple way to find it?
You can understand it by a simple procedure.
using a Optical density measurement.
Add the polymer to a solution and slowly increase the temperature of the solution from 25 to 65C. At every temperature point, measure the OD. The generated data points can be plotted and the plateau points can be taken as the LCST of the material
If you have a circulating water bath with good temperature control, you could set up an array of samples in 10 ml test tubes in a simple rack, equilibrate at a temperature and evaluate visually. Then, increase the temperature a bit, mix the samples and equilibrate again. You could get better insight into LCST trends with composition quickly and then study single systems of interest more carefully via OD as described above,
Dear all,
turbidimetry is a method used for this purpose. Regards
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