Natural antibacterial eugenol microcapsule and preparation method thereof

[0037] In the present embodiment, a kind of eugenol natural antibacterial microcapsule, the core material of described eugenol natural antibacterial microcapsule is eugenol, and shell material is isocyanate group polymer, and eugenol is loaded on the slow release type antibacterial microcapsule In the shell material, the eugenol is changed from an oily liquid to a solid powder form; the eugenol natural antibacterial microcapsules are spherical, and the particle size is in the range of 1-100 microns.

[0038] In the present embodiment, the preparation method of eugenol natural antibacterial microcapsules of the present embodiment, its steps are as follows:

[0039] Step 1: using the mixture of isocyanate and eugenol as the oil phase and the alkali lignin suspension as the water phase to prepare Pickering emulsion;

[0040] Measure 3mL of toluene diisocyanate-80 and 3mL of eugenol in an eggplant-shaped bottle, shake and mix evenly, and use it as the oil phase of the Pickering emuls

[0046] This embodiment is basically the same as Embodiment 1, and the special features are:

[0047] In the present embodiment, the preparation method of eugenol natural antibacterial microcapsules, its steps are as follows:

[0048] Step 1: using the mixture of isocyanate and eugenol as the oil phase and the alkali lignin suspension as the water phase to prepare Pickering emulsion;

[0049] Measure 3mL of toluene diisocyanate-80 and 3mL of eugenol in an eggplant-shaped bottle, shake and mix evenly, and use it as the oil phase of the Pickering emulsion; weigh 0.09g of alkali lignin with a balance, dissolve it in 9mL of deionized water, and ultrasonically 3-5 minutes to obtain a uniformly dispersed alkali lignin solution; use pH test paper to detect the pH of the prepared alkali lignin solution, and the initial solution pH is 9; adjust the pH to 10-11 with ammonia water, and then adjust the pH to 2 with hydrochloric acid -3; At this point, the alkali lignin solution is converted

[0055] This embodiment is basically the same as the previous embodiment, and the special features are:

[0056] In the present embodiment, the preparation method of eugenol natural antibacterial microcapsules, its steps are as follows:

[0057] Step 1: using the mixture of isocyanate and eugenol as the oil phase and the alkali lignin suspension as the water phase to prepare Pickering emulsion;

[0058] Measure 3mL of toluene diisocyanate-80 and 6mL of eugenol in an eggplant-shaped bottle, shake and mix evenly, and use it as the oil phase of the Pickering emulsion; weigh 0.18g of alkali lignin with a balance, dissolve it in 18mL of deionized water, and ultrasonically 3-5 minutes to obtain a uniformly dispersed alkali lignin solution; use pH test paper to detect the pH of the prepared alkali lignin solution, and the initial solution pH is 9; adjust the pH to 10-11 with ammonia water, and then adjust the pH to 2 with hydrochloric acid -3; At this point, the alkali lignin solution i