Complex emulsions,such as double emulsions and high-internal-phase emulsions,have shown great applications in the fields of drug delivery,sensing,catalysis,oil-water separation and self-healing materials.Their control...Complex emulsions,such as double emulsions and high-internal-phase emulsions,have shown great applications in the fields of drug delivery,sensing,catalysis,oil-water separation and self-healing materials.Their controllable preparation is at the forefront of interface and material science.Surfactants and polymers have been widely used as emulsifiers for building complex emulsions.Yet some inherent disadvantages exist including multi-step emulsifications and low production efficiency.Alternatively,supramolecular polymer emulsifier for complex emulsions via one-step emulsification is rising as a new strategy due to the ease of preparation.In this feature article,we review our recent progresses in using supramolecular polymer emulsifiers for the preparation of complex emulsions.Double emulsions and high-internal-phase emulsions are successfully prepared via one-step emulsification with the help of different supramolecular interactions including electrostatic,hydrogen bond,coordination interaction and dynamic covalent bond,which will be particularly emphasized in detail.In the end,a comprehensive prospect is given for the future development of this field.This article is expected to provide new inspirations for preparing complex emulsions via supramolecular routes.展开更多
In this research endeavor,a novel emulsion delivery system was devised to enhance the retention of the fat-soluble active substance known as benzyl isothiocyanate(BITC).Fish skin gelatin(FSG)and pectin(PEC)were chosen...In this research endeavor,a novel emulsion delivery system was devised to enhance the retention of the fat-soluble active substance known as benzyl isothiocyanate(BITC).Fish skin gelatin(FSG)and pectin(PEC)were chosen as complex emulsifiers and collectively referred to as FSG-PEC.The interaction between FSG and PEC was examined by turbidity,flourier transform infrared,fluorescence,ultraviolet,methylene blue,and molecular docking.Emulsification activity,emulsification stability,contact angle,appearance structure,average particle size,zeta potential,oil droplet distribution,and retention rate of the encapsulated BITC,were evaluated to determine the optimal concentration ratio of the FSG-PEC complex for effectively safeguarding BITC.The results showed that the turbidity of FSG and PEC was minimal at pH 7,indicating relative stability of the complex.The primary molecular forces between FSG and PEC were electrostatic and hydrogen bond interaction.The interfacial stability,emulsifying activity and stability of FSG-PEC complex at a 2:1 ratio surpassed those of other ratios.Consequently,this optimal ratio was utilized to prepare FSG-PEC emulsion delivery system containing BITC.The resulting emulsion,stored for 14 days at 4◦C,demonstrated compelling attributes with a particle size of 433.33±1.12 nm,a potential of32.87±0.35 mV,and a BITC retention rate of 59.87±0.65%.The combination of the indicators finally concluded that 2:1 was the optimal ratio to construct the FSG-PEC complex emulsion delivery system.This study constitutes an initial exploration of the interaction dynamics between FSG and PEC,providing a theoretical foundation for subsequent applications.展开更多
基金financially supported by the National Natural Science Foundation of China(Nos.21674127,21422407 and 51373197)
文摘Complex emulsions,such as double emulsions and high-internal-phase emulsions,have shown great applications in the fields of drug delivery,sensing,catalysis,oil-water separation and self-healing materials.Their controllable preparation is at the forefront of interface and material science.Surfactants and polymers have been widely used as emulsifiers for building complex emulsions.Yet some inherent disadvantages exist including multi-step emulsifications and low production efficiency.Alternatively,supramolecular polymer emulsifier for complex emulsions via one-step emulsification is rising as a new strategy due to the ease of preparation.In this feature article,we review our recent progresses in using supramolecular polymer emulsifiers for the preparation of complex emulsions.Double emulsions and high-internal-phase emulsions are successfully prepared via one-step emulsification with the help of different supramolecular interactions including electrostatic,hydrogen bond,coordination interaction and dynamic covalent bond,which will be particularly emphasized in detail.In the end,a comprehensive prospect is given for the future development of this field.This article is expected to provide new inspirations for preparing complex emulsions via supramolecular routes.
基金funded by the Basic Scientific Research Project of Colleges and Universities of Liaoning Provincial Department of Education(LJKZ0547).
文摘In this research endeavor,a novel emulsion delivery system was devised to enhance the retention of the fat-soluble active substance known as benzyl isothiocyanate(BITC).Fish skin gelatin(FSG)and pectin(PEC)were chosen as complex emulsifiers and collectively referred to as FSG-PEC.The interaction between FSG and PEC was examined by turbidity,flourier transform infrared,fluorescence,ultraviolet,methylene blue,and molecular docking.Emulsification activity,emulsification stability,contact angle,appearance structure,average particle size,zeta potential,oil droplet distribution,and retention rate of the encapsulated BITC,were evaluated to determine the optimal concentration ratio of the FSG-PEC complex for effectively safeguarding BITC.The results showed that the turbidity of FSG and PEC was minimal at pH 7,indicating relative stability of the complex.The primary molecular forces between FSG and PEC were electrostatic and hydrogen bond interaction.The interfacial stability,emulsifying activity and stability of FSG-PEC complex at a 2:1 ratio surpassed those of other ratios.Consequently,this optimal ratio was utilized to prepare FSG-PEC emulsion delivery system containing BITC.The resulting emulsion,stored for 14 days at 4◦C,demonstrated compelling attributes with a particle size of 433.33±1.12 nm,a potential of32.87±0.35 mV,and a BITC retention rate of 59.87±0.65%.The combination of the indicators finally concluded that 2:1 was the optimal ratio to construct the FSG-PEC complex emulsion delivery system.This study constitutes an initial exploration of the interaction dynamics between FSG and PEC,providing a theoretical foundation for subsequent applications.
