Fatty amine polyglyceryl ether surfactant also has the structure of organic amine, which makes it have some characteristics of nonionic and cationic surfactants at the same time: when the addition number is small, it shows the characteristics of cationic surfactants, such as acid resistance and intolerance Alkali has certain bactericidal properties, etc.; and when the addition number is large, the non-ionicity increases, no longer precipitates in alkaline solution, the surface activity is not damaged, the non-ionicity increases, and the cationicity decreases. Therefore, the incompatibility with anionic surfactants is weakened, and the two can be used in combination.
The different addition numbers of aliphatic amine polyglyceryl ether surfactants show different properties: when the addition number is small, it shows the characteristics of cationic surfactants, increases its solubility at low temperature, and has good stability in a wide temperature range. Washing ability; and when the addition number is large, the non-ionicity increases, no longer precipitates in alkaline solution, the surface activity is not damaged, and the cationicity decreases due to the increase of non-ionicity.
When it is compounded with anionic surfactant, it can greatly reduce the surface tension, improve emulsification and wetting ability; the hydrophilicity and steric hindrance effect similar to polyoxyethylene chains have obvious effects on the precipitation or aggregation of detergents inhibitory effect. In addition, aliphatic amine polyglyceryl ether has certain softness and antistatic properties, so when it is used for washing fiber products, it can solve the defect of bad hand feeling after washing.
Fatty amine polyglyceryl ether surfactant not only has the good emulsification effect of non-ionic surfactant, but also has the sterilization and disinfection effect of certain cationic surfactant, becoming a "multi-effect" mixed surfactant, which can increase Its turbidity can increase its solubility at low temperature, thereby greatly increasing its adaptability to temperature as a pesticide microemulsion. The mixed surfactant of fatty amine polyglyceryl ether has higher efficiency in forming microemulsion, which can reduce the amount of surfactant and reduce the cost.
Fatty amine polyglyceryl ether surfactant can not only form a continuous water film on the surface of the fiber through the hydrogen bond of the hydrophilic group bond, the hydroxyl group and the water molecule, which has good hygroscopic and conductive effects, but also can effectively absorb the water through the hydrophobic oil film on the fiber surface. Reduce fiber friction, reduce the effect of static electricity, and show a soft and smooth effect. In addition, the hydrophobic part of the fatty amine polyglyceryl ether surfactant is similar to the fatty amine polyoxyethylene ether, and the hydrophilic part is more hydrophilic than the former because glycidol is added instead of ethylene oxide, so it absorbs moisture and conducts electricity. The effect is stronger than that of general polyoxyethylene ether surfactants. And fatty amine polyglyceryl ether surfactant is much less toxic and irritating than cationic surfactants, so it is expected to become an excellent antistatic agent.
The study found that non-ionic surfactants of fatty amine type can have a better effect on the surface treatment of phthalocyanine green pigments. The reason why this good effect can be achieved is because: this type of surfactant can One H in -NH forms a hydrogen bond with the nitrogen on the surface of the phthalocyanine green pigment and is adsorbed on the surface of the pigment, forming an adsorption coating film with its lipophilic hydrocarbon chain, and the formed coating film can effectively prevent the pigment from The agglomeration of the particles during the drying process, thereby inhibiting the grains from continuing to grow, and obtaining finely crystalline pigment particles. The treated pigment is in the organic medium, due to the good compatibility between the hydrocarbon chain and the organic medium, it is quickly solvated to form a solvation film, which makes the pigment particles easy to disperse, and at the same time, it can also play a role when the pigment particles are close to each other. to prevent its flocculation. This effect is strengthened as the hydrocarbon chain grows and the solvation film thickens, which is beneficial to the refinement and narrow distribution of pigment particles. Its hydrophilic group is hydrated to form a hydration film, which can effectively prevent the flocculation between pigment particles and make the pigment particles easy to disperse.
Fatty amine polyglyceryl ether surfactants are more hydrophilic and can form a thicker hydration film. Therefore, the pigments treated with fatty amine polyglyceryl ether surfactants are easier to disperse in water and have smaller particles, which indicates that it has a good application prospect in the surface treatment of pigment phthalocyanine green.
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