Abstract: Phase separated self-healing polymeric wood coatings having a “biphasic” thermoset/thermoplastic morphology to achieve self-healing. The biphasic structure has: (i) a major “load-bearing” thermoset phase that has superior strength and performs major mechanical and structural functions, and (ii) a “self-healing” phase of a thermoplastic healing agent to repair the material and restore its mechanical and structural integrity after being damaged. The phase-separated morphology is achieved through phase separation via a reaction process. Methodologies for achieving the above mentioned “biphasic” structure in solvent borne thermally cured resin, waterborne resin, and solvent borne UV-curable resin are described.