I have polystyrene spheres with diameter of 800nm that are suspended in water, can I create carboxylate modified polystyrene with them?
Dear Nasrin;
a simple google search and you will end up with many papers. The attached one is an exemple. Regards
Thank you Mr. BOUAZIZ, but I have some polystyrene nanospheres that are suspended in water and about one year ago have been produced. Now I need Carboxylate modified polystyrene nanospheres. Can I convert them to the Carboxylate modified polystyrene nanospheres?
Hi Nasrin,
There aren't really any good options (at least that I am familiar with) to chemically add a carboxyl to PS in a controlled manner in an aqueous suspension. think your best course of action would be to chemically oxidize the surface of the polymer, then remove the reagent via dialysis. You could try an acidic KnO4 solution, which will oxidize the surface quite effectively. You will, however get a mixture of hydroxy, carbonyl, and carboxyl groups on the surface, but if you just want some carboxyl groups to impart a negative charge or something like that it should work, though your carboxyl density on the surface will be fairly low. Hope that helps.
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