Materials and methods for the efficient dispersion of nanoparticles
This present invention relates to compositions and methods of enhancing the dispersion of nanoparticles. In certain embodiments, the compositions and methods can be used for enhancing the performance and/or longevity of primers using biochemical-producing microbes and/or byproducts synthesized by the microbes. In certain embodiments, the addition of biosurfactants can enhance the dispersion of pigments and/or other nanoparticles, as well as inhibition of stain or color bleeding through the primer.
1 . A method for dispersing nanoparticles in a primer, said method comprising:
adding to the primer a nanoparticle composition comprising a biosurfactant that is a glycolipid and one or more primer components wherein the nanoparticle composition comprises positively and negatively charged nanoparticles at a ratio of a 1:10 to 10:1, positively charged to negatively charged;
applying the primer to a surface; and
applying a paint over the primer, wherein the primer is formulated with the biosurfactant to prevent color bleeding through the primer.
2 . The method of claim 1 , wherein the biosurfactant is a sophorolipid (SLP).
3 . The method of claim 1 , wherein the primer comprises one or more components selected from a binder, a solvent, a pigment or dye, a buffer, a resin, a stabilizer, and a pH modifier.
4 . The method of claim 1 , wherein the primer is formulated with the biosurfactant to increase adhesion to the surface.
5 . The method of claim 1 , further comprising measuring the degree of dispersion of the nanoparticles in the primer.
6 . The method of claim 2 , wherein the SLP is an acidic SLP.
7 . The method of claim 2 , wherein the SLP is a lactonic SLP.
8 . The method of claim 1 , wherein the biosurfactant is added at a concentration between about 0.05 gram per liter (g/L) of the primer and about 5 g/L.
9 . The method of claim 8 , wherein the concentration is about 0.05 g/L.
10 . The method of claim 8 , wherein the concentration is about 0.1 g/L.
11 . The method of claim 8 , wherein the concentration is about 0.5 g/L.
12 . The method of claim 8 , wherein the concentration is about 1 g/L.
13 . The method of claim 8 , wherein the concentration is about 5 g/L.
14 . The method of claim 1 , wherein the primer is formulated with the biosurfactant to increase concealment of topographic variations of the surface.
15 . The method of claim 1 , wherein the primer is formulated with the biosurfactant to improve sealing of pores of the surface.
16 . The method of claim 1 , wherein the primer is formulated with the biosurfactant to prevent odor dissemination.
17 . The method of claim 1 , wherein the primer is formulated with the biosurfactant to establish a tie-coat layer.
18 . The method of claim 1 , wherein the primer is formulated with the biosurfactant to prevent stain bleeding through the primer.