Supramolecular hydrogel and preparation method thereof

Abstract

The invention relates to the technical field of supramolecules, and discloses supramolecular hydrogel and a preparation method thereof. The supramolecular hydrogel provided by the invention contains a compound as shown in a formula (I), a compound as shown in a formula (II) and water, the preparation method of the supramolecular hydrogel comprises the following steps: (1) mixing a compound as shown in a formula (I) with water to obtain a mixed solution I, and mixing a compound as shown in a formula (II) with water to obtain a mixed solution II; and (2) mixing the mixed solution I with the mixed solution II to obtain a mixture III. The supramolecular hydrogel provided by the invention has the characteristics of good moisture absorption and moisture retention and good elastic modulus.

Description

technical field

[0001] The invention relates to the field of supramolecular technology, in particular to a supramolecular hydrogel and a preparation method thereof. Background technique

[0002] Hydrogel is a gel material with water as the dispersion medium. Due to its pore structure and three-dimensional network structure, hydrogel can continue to maintain its original structure without depolymerization after absorbing water and swelling, and can be used in Medical cosmetology, bioengineering, agriculture, petrochemical, building materials and other fields.

[0003] Supramolecular hydrogels (Supramolecular hydrogels) refer to nano-aggregates formed by self-assembly of small molecules (molecular weight ≤ 2000, also known as gel factor) with water as the main solvent. This aggregate is a state in which the hydrophilic groups of the gelatin factor are dissolved in water and its hydrophobic groups are aggregated in water to achieve equilibrium. Different from traditional poly...

Examples

Embodiment 1

[0055] (1) Add 1 g of NBD-FFYG-G to 11.5 g of distilled water and stir and mix for 1 min at a temperature of 40 ° C to prepare a solution with a concentration of 8 wt % of NBD-FFYG-G, and then add 0.002 g of α- Hydroxypropionic acid and 0.002 g of α-hydroxy n-butyric acid were magnetically stirred for 5 minutes in a water bath at 40°C to obtain a mixed solution I;

[0056] (2) Add 1 g of NBD-FFYG-C to 11.5 g of distilled water, stir for 1 min at a temperature of 24° C., and prepare a mixed solution II with a concentration of NBD-FFYG-C of 8 wt %;

[0057] (3) Mix the mixed solution I obtained in step (1) with the mixed solution II obtained in step (2), stir at 6°C for 15 minutes, and then stand at 24°C for 25 minutes to obtain supramolecular water gel.

Embodiment 2

[0059] (1) Add 1 g of NBD-FFYG-G to 19 g of distilled water and stir and mix for 0.5 min at a temperature of 35 ° C to prepare a solution with a concentration of 5 wt % of NBD-FFYG-G, and then add 0.003 g of α- Hydroxy-n-valeric acid was magnetically stirred in a water bath at 35°C for 4 minutes to obtain a mixed solution I;

[0060] (2) Add 1 g of NBD-FFYG-C to 19 g of distilled water, stir for 0.5 min at a temperature of 20° C., and prepare a mixed solution II with a concentration of NBD-FFYG-C of 5 wt %;

[0061] (3) Mix the mixed solution I obtained in step (1) with the mixed solution II obtained in step (2), stir at 4°C for 10 minutes, and then stand at 20°C for 30 minutes to obtain supramolecular water gel.

Embodiment 3

[0063] (1) Add 1 g of NBD-FFYG-G to 9 g of distilled water and stir and mix for 3 minutes at a temperature of 45 ° C to prepare a solution with a concentration of 10 wt % of NBD-FFYG-G, and then add 0.005 g of α-hydroxyl Propionic acid, stirred magnetically for 6 minutes in a water bath at 45°C to obtain a mixed solution I;

[0064] (2) Add 1 g of NBD-FFYG-C to 9 g of distilled water, stir for 3 min at a temperature of 30° C., and prepare a mixed solution II with a concentration of NBD-FFYG-C of 10 wt %;

[0065] (3) Mix the mixed solution I obtained in step (1) with the mixed solution II obtained in step (2), stir at 8°C for 20 minutes, and then stand at 30°C for 20 minutes to obtain supramolecular water gel.

technical field

[0001] The invention relates to the field of supramolecular technology, in particular to a supramolecular hydrogel and a preparation method thereof. Background technique

[0002] Hydrogel is a gel material with water as the dispersion medium. Due to its pore structure and three-dimensional network structure, hydrogel can continue to maintain its original structure without depolymerization after absorbing water and swelling, and can be used in Medical cosmetology, bioengineering, agriculture, petrochemical, building materials and other fields.

[0003] Supramolecular hydrogels (Supramolecular hydrogels) refer to nano-aggregates formed by self-assembly of small molecules (molecular weight ≤ 2000, also known as gel factor) with water as the main solvent. This aggregate is a state in which the hydrophilic groups of the gelatin factor are dissolved in water and its hydrophobic groups are aggregated in water to achieve equilibrium. Different from traditional poly...

Examples

Embodiment 1

[0055] (1) Add 1 g of NBD-FFYG-G to 11.5 g of distilled water and stir and mix for 1 min at a temperature of 40 ° C to prepare a solution with a concentration of 8 wt % of NBD-FFYG-G, and then add 0.002 g of α- Hydroxypropionic acid and 0.002 g of α-hydroxy n-butyric acid were magnetically stirred for 5 minutes in a water bath at 40°C to obtain a mixed solution I;

[0056] (2) Add 1 g of NBD-FFYG-C to 11.5 g of distilled water, stir for 1 min at a temperature of 24° C., and prepare a mixed solution II with a concentration of NBD-FFYG-C of 8 wt %;

[0057] (3) Mix the mixed solution I obtained in step (1) with the mixed solution II obtained in step (2), stir at 6°C for 15 minutes, and then stand at 24°C for 25 minutes to obtain supramolecular water gel.

Embodiment 2

[0059] (1) Add 1 g of NBD-FFYG-G to 19 g of distilled water and stir and mix for 0.5 min at a temperature of 35 ° C to prepare a solution with a concentration of 5 wt % of NBD-FFYG-G, and then add 0.003 g of α- Hydroxy-n-valeric acid was magnetically stirred in a water bath at 35°C for 4 minutes to obtain a mixed solution I;

[0060] (2) Add 1 g of NBD-FFYG-C to 19 g of distilled water, stir for 0.5 min at a temperature of 20° C., and prepare a mixed solution II with a concentration of NBD-FFYG-C of 5 wt %;

[0061] (3) Mix the mixed solution I obtained in step (1) with the mixed solution II obtained in step (2), stir at 4°C for 10 minutes, and then stand at 20°C for 30 minutes to obtain supramolecular water gel.

Embodiment 3

[0063] (1) Add 1 g of NBD-FFYG-G to 9 g of distilled water and stir and mix for 3 minutes at a temperature of 45 ° C to prepare a solution with a concentration of 10 wt % of NBD-FFYG-G, and then add 0.005 g of α-hydroxyl Propionic acid, stirred magnetically for 6 minutes in a water bath at 45°C to obtain a mixed solution I;

[0064] (2) Add 1 g of NBD-FFYG-C to 9 g of distilled water, stir for 3 min at a temperature of 30° C., and prepare a mixed solution II with a concentration of NBD-FFYG-C of 10 wt %;

[0065] (3) Mix the mixed solution I obtained in step (1) with the mixed solution II obtained in step (2), stir at 8°C for 20 minutes, and then stand at 30°C for 20 minutes to obtain supramolecular water gel.

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