PVA: poly vinyl alcohol and PVP: poly vinyl pirrolidone.
water as solvent.
Hello Karimi
I am not an organic chemist, but from the structure it looks like PVA has hydrogen bonds. The H-bonds help in more aggregation and may yield larger nano-particles. This is only a tentative answer. I think that you should also specify the type of the solvent which may also affect in such a case.
Good luck
Hi Chao, i mean when PVA or PVP are used as template (so can be eliminated after calcination).
Even in case of template, the hydrogen bond formation would affect.
PVP coordinates the NPs better than PVA and prevents the coalescence during synthesis. See the literature from TsuKuda.
Hi Antonio, Do you mean this paper "of Solid dispersion Systems of Disopyramide with Polyvinylpyrrolidone and γ-Cyclodextrin"? Thanks.
How did you prepare them? Particle size very much depends on the solution and condition you are using. E.g. in precipitation polymerization it depends on the solubility in the solvent. So if monomers are better soluble you get smaller particles. Also lower monomer concentration often leads to smaller particles.
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