2023
DOI: 10.1002/ceat.202200543
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Interfacial Polymerization Kinetics of Polyurea Microcapsules Formed Using Hexamethylene Diisocyanate Biuret Low Viscosity Isocyanate

Abstract: For cosmetic industrial applications, polyurea microcapsules were formed by using hexamethylene diisocyanate biuret low viscosity (HDB‐LV) and three different amines: ethylenediamine (EDA), guanidine (GUA), and hexamethylenediamine (HMDA). Toluene droplets containing dissolved HDB‐LV were formed by an oil‐in‐water emulsion before being poured into a water phase containing the required excess of amine. The pH of the aqueous phase was fitted through time to calculate the kinetic constant k' and the diffusion con… Show more

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Cited by 4 publications
(4 citation statements)
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“…The Taguchi design methodology was utilized in this study to determine the optimal process parameters through the use of SNR analysis 24 . The larger‐the‐better criterion (Equation ) was used to identify the optimal conditions to achieve the maximum core content of the microcapsules, while the nominal‐the‐best criterion (Equation ) was used to find conditions favorable for producing microcapsules with the size of 50 μm. SN=10log1n1y2, Larger‐the‐better. SN=10logȳ2s2, Nominal‐the‐best.…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…The Taguchi design methodology was utilized in this study to determine the optimal process parameters through the use of SNR analysis 24 . The larger‐the‐better criterion (Equation ) was used to identify the optimal conditions to achieve the maximum core content of the microcapsules, while the nominal‐the‐best criterion (Equation ) was used to find conditions favorable for producing microcapsules with the size of 50 μm. SN=10log1n1y2, Larger‐the‐better. SN=10logȳ2s2, Nominal‐the‐best.…”
Section: Methodsmentioning
confidence: 99%
“…Numerous polymer materials are appropriate for creating the shell of the capsules. The most popular shells for microcapsules formation are poly(urea formaldehyde), [12][13][14][15][16][17] poly(melamine formaldehyde), [18][19][20] poly(urea melamine formaldehyde), 19,21 polyurethane, 22 polyurea, [23][24][25] poly(methyl methacrylate), [26][27][28][29] and others.…”
Section: Introductionmentioning
confidence: 99%
“…Perignon et al have outlined this membrane formation mechanism for polyamide-, polyurea-, polyurethane-, and polyester-based polymers, which are most commonly used as shell materials . Furthermore, studies highlighting the kinetics of the interfacial polymerization process, specifically for polyurea microcapsules, can be found in the literature. , All in all, the interfacial polymerization technology is well established and leads to formation of microcapsules with high encapsulation efficiencies (EEs) and tunable release properties . However, despite their superior encapsulation and AI release performance, the lack of biodegradability of these microcapsules is a major issue …”
Section: Introductionmentioning
confidence: 99%
“…As such, partially biobased polyureas were synthesized using chitosan oligomers and isocyanate to form biobased microcapsules. , Microcapsules were also synthesized using acrylates bearing, e.g., soybean oil-derived side chains, where the resultant polymers contained a fossil-based polyacrylate backbone and biobased side chains and were partially biobased overall …”
Section: Introductionmentioning
confidence: 99%