Osmanthus fragrance polyurethane/silk<scp>fibroin‐based double‐shell</scp>microcapsules for aromatic leather with sustained release fragrance

Gu, Jun; Liu, Ming; Li, Lin; Zhou, Lulu; He, Lei; Deng, Weijun; Hu, Jing

doi:10.1002/ffj.3727

Cited by 4 publications

(3 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first stage is in the range of 25-233 C mainly because of the loss of the fragrance, and the second stage ranging from 376 C to 479 C is caused by the decomposition of wall material. 21,22 As can be seen from the DTG curves, compared with essential oil, the maximum weight loss rate temperature for the fragrance capsules is increased from 127 C to 169 C, indicating that the wall material plays an important role in protecting essential oil from losing at high temperature conditions.…”

Section: Thermal Stabilitymentioning

confidence: 96%

Preparation and properties of photothermal responsive fragrance microcapsules

Han,

Shi,

Chen

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

Stimulus‐responsive fragrance microcapsules gradually bring about the attention of the people by using the external environment as the “on/off” switch to achieve intelligent release of aromatic compounds. In this paper, the photothermal responsive fragrance microcapsules are successfully synthesized by in situ polymerization using methyl methacrylate (MMA) and trimethylolpropane triacrylate (TMPTA) as wall materials simultaneously doped with polyaniline (PANI). The results indicate that the synthesized fragrance microcapsules have good spherical shape and thermal stability, which can prevent the leakage of essential oil. Furthermore, the addition of PANI effectively promotes the release of fragrance under the stimulation of light source, achieving photothermal responsive release. Meanwhile, the prepared fragrance microcapsules are applied to fabricate fragrance silk fabrics through soaking‐rolling‐baking procedure. The obtained aromatic fabrics show interesting light stimulation release behavior and good washing fastness.

show abstract

Section: Thermal Stabilitymentioning

confidence: 96%

Preparation and properties of photothermal responsive fragrance microcapsules

Han,

Shi,

Chen

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Meanwhile, different release temperatures can be achieved by selecting alkanes with different boiling points. , Polyurethane, as an organic polymer shell material, offers good design flexibility and requires a relatively low reaction temperature. Therefore, it is suitable for encapsulating low boiling point core materials. − This study explores the preparation of temperature-responsive chromogenic microcapsules with desired temperature indication. Upon heating the coating embedded with microcapsules, a color change of the coating can be observed by the naked eye with the microcapsules releasing of the dyed indicator liquid.…”

Section: Introductionmentioning

confidence: 99%

Encapsulation of Dyed Alkanes with Polyurethane Microcapsules from Interfacial Polymerization Enables Irreversible Thermochromic Coatings

Wang,

Liu,

Luo

et al. 2024

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

The development of irreversible thermochromic coatings in response to specific temperatures has been challenging due to the difficulty in their stability under ambient conditions. This study presents a method to fabricate temperature-responsive microcapsules with high thermal stability and precise temperature control by shell thickness and alkane mixtures. The microcapsules are prepared via interfacial polymerization using polyurethane as the shell material and dyed alkanes as the indicator liquid. By exploiting the swelling and volatilization of the solvent, the self-limitation nature of interfacial polymerization is overcome, resulting in smooth and dense shell layers with a tunable thickness. The microcapsules encapsulated with dyed alkanes exhibit excellent thermal stability at room temperature. The release temperature is found to be positively correlated to the shell thickness and approaches the boiling point of the alkanes. By incorporating different dyed alkanes with varying boiling points, we achieved precise control over the release temperature is achieved. The microcapsules containing a mixture of dyed heptane and hexadecane (C16) as the core material and those containing dyed C16 as the core material are incorporated into a UV curable coating, respectively. The resulting coatings exhibit rapid and irreversible color changes at specific temperatures of 60, 90, and 120 °C. This study provides a promising strategy for early warning of abnormal temperatures in various applications, including electronic devices, power cables, and lithium batteries.

show abstract

“…Complex coacervation is a highly promising microencapsulation technique that is extensively employed in various industries such as pharmaceutical, food, agriculture and textile industries. This technique has several advantages, including high encapsulation efficiency, low cost and ease of operation [ 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Temperature-Sensitive Fragrance Microcapsules with Double Capsule Walls: A Study on Preparation and Sustained Release Mechanism

Yang,

Hu,

Qiu

et al. 2023

Polymers

View full text Add to dashboard Cite

Microcapsules are small particles that can effectively protect a core material from degradation. Microcapsules with double capsule walls can improve stability and reduce breakage due to the fact that the physical and chemical properties of double-walled materials can complement each other, thus enhancing the quality and applicability of a microcapsule. Microcapsules can achieve controlled release of core materials by using a temperature-sensitive wall material. In this research, gelatin was used as the inner wall material for these double-walled microcapsules. The outer wall material was a composite material prepared by the reaction of a hydroxyl group in gum arabic with an amino group in N-isopropylacrylamide (NIPAM) in the presence of N, N’-methylene bisacrylamide (BIS), while lavender fragrance oil served as the core material. A complex coalescence method was used for the preparation of microcapsules with double capsule walls. The effects of different proportions of gum arabic to NIPAM on the core loading, microcapsule yield and thermal stability of microcapsules were studied in detail. Additionally, the stability of these fragrance microcapsules with double capsule walls in different solvents and pH values was evaluated. The sustained release properties and mechanism of cotton fabrics treated with prepared fragrance microcapsules were investigated. The results show that the microcapsules prepared with a 10:1 ratio of NIPAM to gum arabic have good temperature responsiveness. Therefore, clothing treated with microcapsules with temperature-sensitive wall materials can ensure that the human body has a fresh and pleasant smell in the case of perspiring in summer.

show abstract

Osmanthus fragrance polyurethane/silkfibroin‐based double‐shellmicrocapsules for aromatic leather with sustained release fragrance

Cited by 4 publications

References 43 publications

Preparation and properties of photothermal responsive fragrance microcapsules

Preparation and properties of photothermal responsive fragrance microcapsules

Encapsulation of Dyed Alkanes with Polyurethane Microcapsules from Interfacial Polymerization Enables Irreversible Thermochromic Coatings

Temperature-Sensitive Fragrance Microcapsules with Double Capsule Walls: A Study on Preparation and Sustained Release Mechanism

Contact Info

Product

Resources

About