Penetration and adhesion of finishes for fungal materials through solubilization, emulsion, or dispersion in water-soluble materials and the use of surfactants
An abrasion resistant finish for a fungal material, the finishing comprising an optimum quantity biodegradable polylactic acid plastic (PLA) dispersed in water to produce a PLA mixture. When the PLA mixture is applied to the fungal material, water carries the PLA deeply into the matrix of the fungal hyphae to a depth at least 2 N/10 mm or 1% of the thickness of the fungal material, whichever is greater. The finish fortifies the hyphal structure as the water evaporates and creates a PLA coating on the fungal material with improved abrasion resistance and water resistance.
1. A method for creating an abrasion resistant finish for a fungal material, comprising the steps of:
a. providing a quantity of a polymer;
b. dispersing the quantity of the polymer into water to produce a mixture;
c. applying the mixture onto the fungal material surface such that the water carries the polymer deeply into the fungal matrix;
d. adding at least one surfactant to the polymer coated fungal material to improve an effectiveness of the abrasion resistant finish;
e. allowing the fungal material to dry such that the water evaporates thereby creating a polymer coating on the fungal material with improved abrasion resistance and water resistance; and
f. pressing the polymer coated fungal material at an elevated temperature to promote cross-linking that results in greater water-resistance and lower susceptibility to break-down in the presence of moisture.
2. The method of claim 1 wherein the mixture is applied in several coats and allowed to dry between 20° C. and 80° C.
3. The method of claim 1 wherein the mixture is shaken before application onto the fungal material.
4. The method of claim 1 wherein the at least one surfactant further includes 2-butoxyethanol.
5. The method of claim 1 wherein the polymer is a polyhydroxyacids.
6. The method of claim 1 wherein the polymer is poly (L-lactic acid) (PLA).
7. An abrasion resistant finish on a fungal material, the abrasion resistant finish comprising:
a polymer dispersed in water to produce a mixture; and
at least one surfactant to improve an effectiveness of the abrasion resistant finish;
whereby the mixture and surfactant is applied to the fungal material, and the water carries the polymer deeply into the matrix of a fungal hyphae to a depth of at least 1% of the thickness of the fungal material, or to the fungal material depth of at least 20 micrometers, fortifies a hyphal structure as the water evaporates and creates a polymer coating on the fungal material with improved abrasion resistance and water resistance.
8. The abrasion resistant finish of claim 7 wherein the at least one surfactant serves to lower the surface tension of the polymer coating, which improves wetting of the fungal surface and draws the abrasion resistant finish deeper into the fungal material.
9. The abrasion resistant finish of claim 7 wherein the at least one surfactant further includes 2-butoxyethanol.
10. The abrasion resistant finish of claim 7 wherein the depth is at least 1% and at most 10%.
11. The abrasion resistant finish of claim 7 wherein the polymer is a polyhydroxy acid.
12. The abrasion resistant finish of claim 7 wherein the polymer is poly (L-lactic acid) (PLA).