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.
Dear Nasrin;
Laser bombardment to polystyrene is part of my research. The changes that took place during laser bombardment in ambient condition, would create carboxyl, which mean a lot of oxygen is attaching to the break-up of aromatic rings in polystyrene. You can read my papers where we could also found some graphene and graphene oxide on polystyrne nanospheres surfaces. Nevertheless, it is still a preliminary finding, where bombardment of laser to polystyrene or electron beam, modifed the polystyrene structures. Application, mainly for polymer resist materials, where we could get zwitter characteristic, which indicate the changes of polymer resist from negative tone to positive tone. Please look into my papers, perhaps you could look for the simplest route.
Article Physical and Chemical Changes of Polystyrene Nanospheres Irr...
Conference Paper The Effect of Electron Beam Bombardment into Polystyrene Nanospheres
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