Acid‐Responsive Anticorrosion Microcapsules for Self‐Protecting Coatings

Thakare, Dhawal R.; Xiong, Thao M.; Flueck, Ian L.; Morado, Ephraim G.; Zimmerman, Steven C.; Sottos, Nancy R.

doi:10.1002/macp.202270009

Cited by 3 publications

(4 citation statements)

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“…Many examples of responsive polymeric shells use cross-linking agents to tune mechanical and physicochemical properties. , One of the most utilized and studied cross-linked systems relates to the polysaccharide alginate family. There are substantial reviews with respect to the versatility of alginate release systems. , Briefly, individual polymer chains bearing a negative charge can be bridged or cross-linked upon the introduction of a divalent cation leading to strong intermolecular bonding and formation of a gel.…”

Section: Barrier and Release Propertiesmentioning

confidence: 99%

“…Capsules may act as standalone delivery devices but can also be imbedded in films or layers. − Work by Thakare et al reported capsules embedded in an epoxy coating spread upon a steel substrate . These microcapsules were formed via an interfacial polymerization/cross-linking process and were designed to encapsulate two different anticorrosive active ingredients (2-butyne-1,4-diol and jojoba oil).…”

Section: Barrier and Release Propertiesmentioning

confidence: 99%

“…Many examples of responsive polymeric shells use cross-linking agents to tune mechanical and physicochemical properties. 91,92 One of the most utilized and studied cross-linked systems relates to the polysaccharide alginate family. There are substantial reviews with respect to the versatility of alginate release systems.…”

Section: Introductionmentioning

confidence: 99%

“…139−141 Work by Thakare et al reported capsules embedded in an epoxy coating spread upon a steel substrate. 92 These microcapsules were formed via an interfacial polymerization/cross-linking process and were designed to encapsulate two different anticorrosive active ingredients (2-butyne-1,4-diol and jojoba oil). Cross-linking was accomplished through covalent bonding between amine groups on diethylaminoketal and acyl chloride moieties of trimesoyl chloride.…”

Section: Introductionmentioning

confidence: 99%

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Current Challenges in Microcapsule Designs and Microencapsulation Processes: A Review

Lobel,

Baiocco,

Al-Sharabi

et al. 2024

ACS Appl. Mater. Interfaces

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Microencapsulation is an advanced methodology for the protection, preservation, and/or delivery of active materials in a wide range of industrial sectors, such as pharmaceuticals, cosmetics, fragrances, paints, coatings, detergents, food products, and agrochemicals. Polymeric materials have been extensively used as microcapsule shells to provide appropriate barrier properties to achieve controlled release of the encapsulated active ingredient. However, significant limitations are associated with such capsules, including undesired leaching and the nonbiodegradable nature of the typically used polymers. In addition, the energy cost of manufacturing microcapsules is an important factor to be considered when designing microcapsule systems and the corresponding production processes. Recent factors linked to UN sustainability goals are modifying how such microencapsulation systems should be designed in pursuit of "ideal" microcapsules that are efficient, safe, cost-effective and environmentally friendly. This review provides an overview of advances in microencapsulation, with emphasis on sustainable microcapsule designs. The key evaluation techniques to assess the biodegradability of microcapsules, in compliance with recently evolving European Union requirements, are also described. Moreover, the most common methodologies for the fabrication of microcapsules are presented within the framework of their energy demand. Recent promising microcapsule designs are also highlighted for their suitability toward meeting current design requirements and stringent regulations, tackling the ongoing challenges, limitations, and opportunities.

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