I want to grow PLLA chains on the surface of MgO nanoparticles using "grafting from method" and "ring opening polymerization" of the monomer. I've read plenty of papers in this area. I know there are hydroxyl groups on the surface MgO nanoparticles, but I don't know if I can count on them to form a strong bond with my PLLA chains or not? in other words should I modify the surface of my nanoparticles before grafting PLLA chains?
Dear Shaghayegh Kiafar:
Poly(L-Lactide)-b-Poly(2,5- benzophenone)-b-Poly(L-Lactide) Poly(L-lactide) (PLLA) was prepared by polymerizing lactide. For this purpose, complexes of tin are used, aluminum, lanthanides. These catalysts can create covalent bonds. Mg(OH)2 linked ionic bond. He is a strong electrolyte. He can not participate in the polymerization intermediate complex.
Best regards.
Yes, you should first immobilize a dense layer of initiator with a stable anchor group to the surface before attempting ROMP. It is important that you can ensure a homogeneous and dense layer of initiation sites on the NP surface.
Dear Erik, thanks for your attention, it would be very appreciated if you introduce some references in this area
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