Stimulus responsive microcapsules and their aromatic applications

Xiao, Zuobing; Sun, Ping‐Li; Liu, Huiqin; Zhao, Qixuan; Niu, Yunwei; Zhao, Di

doi:10.1016/j.jconrel.2022.09.017

Cited by 25 publications

(19 citation statements)

References 141 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, lots of aroma-active compounds are diffusive and easily lost in a short period of time due to their high volatility, 3 so it is important to extend the retention time of fragrances via physical and chemical methods for controlled and/or sustained release. For example, microcapsules are a commonly used physical method of sustained release of a fragrance, using the shell to separate the active and volatile aromatic compounds from the outside environment, 4–6 and some further applications of encapsulated aromatic compounds on various fabric surfaces have also been reported by our group. 7–10 Another method is to generate fragrance precursors (so-called “profragrances”).…”

Section: Introductionmentioning

confidence: 92%

Substituent effect on controlled release of fragrant aldehydes from pH-triggered nicotinoylhydrazone-based precursors

Xiao

et al. 2023

Mol. Syst. Des. Eng.

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 92%

Substituent effect on controlled release of fragrant aldehydes from pH-triggered nicotinoylhydrazone-based precursors

Xiao

et al. 2023

Mol. Syst. Des. Eng.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The microcapsules were used for efficient storage and targeted release of the FAS . On the one hand, the shells of the microcapsules provided an interface between the encapsulated FAS and the external environment, effectively protecting the FAS against hydrolysis and evaporation. − In addition, the shells of microcapsules melted and released FAS under NIR irradiation. Therefore, they controlled the FAS release via encapsulation.…”

Section: Introductionmentioning

confidence: 99%

Near-Infrared Light Responsive Surface with Switchable Wettability in Microstructure and Surface Chemistry

et al. 2023

View full text Add to dashboard Cite

Intelligent surfaces with reversibly switchable wettability have recently drawn considerable attention. One typical strategy to obtain such a surface is to change the surface chemistry or the microstructure. Herein, we report a new smart surface for which the wettability was controlled by both the surface chemistry and microstructure. Various wetting states were reversibly and precisely controlled through heating, pressing, NIR irradiation, and oxygen plasma treatment. The excellent shape memory characteristics of shape memory polyurethane (SMPU) and the controlled release of hydrophobic/hydrophilic oxygen-containing functional groups contributed to this ability. Microcapsules were used to design these smart surfaces. They controlled the release of a fluorinated alkyl silane (FAS) through shell melting, changed the surface composition, and played a decisive role in protecting the FAS against hydrolysis and evaporation to ensure that the surface’s wettability is recyclable. Controlling of the surface chemistry or microstructure was repeated for at least 19 or 16 cycles, respectively, which indicated excellent repeatability compared to other smart surfaces. Based on the excellent controllability, the surface exhibited multiple functions, such as liquid directional transport and coefficient of friction control. In addition, it maintained this extraordinary ability under harsh environments owing to the great stability of the SMPU and adequate protection of the FAS by the microcapsules. With switchable wettability based on the surface chemistry and microstructure, this work provides a new principle for designing smart surfaces with wettability controlled in two ways.

show abstract

“…Techniques to obtain fragrance-loaded microparticles/microcapsules include spray drying, simple coacervation, emulsification, complex coacervation, and microfluidic encapsulation . These methods work well; however, they routinely require processing conditions involving high temperatures, toxic crosslinking agents, or special instrumentation, and the product yields are usually low. , Encapsulation is the process by which one material or a mixture of materials is surrounded by a protective coating layer or entrapped within another material or system. Encapsulation technology is commonly used in the pharmaceutical, chemical, cosmetic, food, and printing industries .…”

Section: Introductionmentioning

confidence: 99%

Stabilization and Sustained Release of Fragrances Using Silk-PEG Microspheres

Guo

Wang

et al. 2023

ACS Biomater. Sci. Eng.

View full text Add to dashboard Cite

Fragrances, which are commonly used in food, textiles, consumer products, and medical supplies, are volatile compounds that require stabilization and controlled release due to their sensitivity to environmental conditions such as light, oxygen, temperature, and humidity. Encapsulation in various material matrices is a desired technique for these purposes, and there is a growing interest in using sustainable natural materials to reduce environmental impact. In this study, fragrance encapsulation in microspheres made from silk fibroin (SF) was investigated. Fragrance-loaded silk fibroin microspheres (Fr-SFMSs) were prepared by adding fragrance/surfactant emulsions to silk solutions, followed by mixing them with polyethylene glycol under ambient conditions. The study investigated eight different fragrances, where citral, beta-ionone, and eugenol showed higher binding affinities to silk than the other five fragrances, resulting in better microsphere formation with uniform sizes and higher fragrance loading (10–30%). Citral-SFMSs showed characteristic crystalline β-sheet structures of SF, high thermal stability (initial weight loss at 255 °C), long shelf life at 37 °C (>60 days), and sustained release (∼30% of citral remained after incubation at 60 °C for 24 h). When citral-SFMSs with different sizes were used to treat cotton fabrics, about 80% of the fragrance remained on the fabrics after one wash, and the duration of release from the treated fabrics was significantly longer than that of control samples treated with citral alone (no microspheres). This method of preparing Fr-SFMSs has potential applications in textile finishing, cosmetics, and the food industry.

show abstract

Stimulus responsive microcapsules and their aromatic applications

Cited by 25 publications

References 141 publications

Substituent effect on controlled release of fragrant aldehydes from pH-triggered nicotinoylhydrazone-based precursors

Substituent effect on controlled release of fragrant aldehydes from pH-triggered nicotinoylhydrazone-based precursors

Near-Infrared Light Responsive Surface with Switchable Wettability in Microstructure and Surface Chemistry

Stabilization and Sustained Release of Fragrances Using Silk-PEG Microspheres

Contact Info

Product

Resources

About