Peripherally decorated binary microcapsules containing two liquids

Steven D. Mookhoek; Benjamin J. Blaiszik; Hartmut R. Fischer; Nancy R. Sottos; Scott R. White; Sybrand Van Der Zwaag

doi:10.1039/b810542a

Peripherally decorated binary microcapsules containing two liquids

Steven D. Mookhoek, Benjamin J. Blaiszik, Hartmut R. Fischer, Nancy R. Sottos, Scott R. White, Sybrand Van Der Zwaag

Research output: Contribution to journal › Article › peer-review

Abstract

In this work, ∼1.4 m dibutylphthalate (DBP) filled urea-formaldehyde (UF) microcapsules were used as Pickering stabilizers to create larger ∼140 m microcapsules containing a second liquid phase, dicyclopentadiene (DCPD). The binary microcapsules were made by encapsulating the dispersed DCPD liquid (stabilized with the UF(DBP) microcapsules in water) via an isocyanate-alcohol interfacial polymerization reaction. Fluorescent optical microscopy and scanning electron microscopy (SEM) showed that the resulting microcapsules have a central liquid core decorated at its periphery with a layer of microcapsules containing the second liquid. The presence of both the encapsulated liquids within a single capsule structure was demonstrated by differential scanning calorimetry (DSC). DSC data analysis indicated a DBP volume fraction of 8.8%. This value was validated by the calculated theoretical fraction on the basis of the observed architecture and capsule dimensions.

Original language	English (US)
Pages (from-to)	5390-5394
Number of pages	5
Journal	Journal of Materials Chemistry
Volume	18
Issue number	44
DOIs	https://doi.org/10.1039/b810542a
State	Published - 2008

ASJC Scopus subject areas

General Chemistry
Materials Chemistry

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10.1039/b810542a

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abstract = "In this work, ∼1.4 m dibutylphthalate (DBP) filled urea-formaldehyde (UF) microcapsules were used as Pickering stabilizers to create larger ∼140 m microcapsules containing a second liquid phase, dicyclopentadiene (DCPD). The binary microcapsules were made by encapsulating the dispersed DCPD liquid (stabilized with the UF(DBP) microcapsules in water) via an isocyanate-alcohol interfacial polymerization reaction. Fluorescent optical microscopy and scanning electron microscopy (SEM) showed that the resulting microcapsules have a central liquid core decorated at its periphery with a layer of microcapsules containing the second liquid. The presence of both the encapsulated liquids within a single capsule structure was demonstrated by differential scanning calorimetry (DSC). DSC data analysis indicated a DBP volume fraction of 8.8%. This value was validated by the calculated theoretical fraction on the basis of the observed architecture and capsule dimensions.",

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AU - Mookhoek, Steven D.

AU - Blaiszik, Benjamin J.

AU - Fischer, Hartmut R.

AU - Sottos, Nancy R.

AU - White, Scott R.

AU - Van Der Zwaag, Sybrand

PY - 2008

Y1 - 2008

N2 - In this work, ∼1.4 m dibutylphthalate (DBP) filled urea-formaldehyde (UF) microcapsules were used as Pickering stabilizers to create larger ∼140 m microcapsules containing a second liquid phase, dicyclopentadiene (DCPD). The binary microcapsules were made by encapsulating the dispersed DCPD liquid (stabilized with the UF(DBP) microcapsules in water) via an isocyanate-alcohol interfacial polymerization reaction. Fluorescent optical microscopy and scanning electron microscopy (SEM) showed that the resulting microcapsules have a central liquid core decorated at its periphery with a layer of microcapsules containing the second liquid. The presence of both the encapsulated liquids within a single capsule structure was demonstrated by differential scanning calorimetry (DSC). DSC data analysis indicated a DBP volume fraction of 8.8%. This value was validated by the calculated theoretical fraction on the basis of the observed architecture and capsule dimensions.

AB - In this work, ∼1.4 m dibutylphthalate (DBP) filled urea-formaldehyde (UF) microcapsules were used as Pickering stabilizers to create larger ∼140 m microcapsules containing a second liquid phase, dicyclopentadiene (DCPD). The binary microcapsules were made by encapsulating the dispersed DCPD liquid (stabilized with the UF(DBP) microcapsules in water) via an isocyanate-alcohol interfacial polymerization reaction. Fluorescent optical microscopy and scanning electron microscopy (SEM) showed that the resulting microcapsules have a central liquid core decorated at its periphery with a layer of microcapsules containing the second liquid. The presence of both the encapsulated liquids within a single capsule structure was demonstrated by differential scanning calorimetry (DSC). DSC data analysis indicated a DBP volume fraction of 8.8%. This value was validated by the calculated theoretical fraction on the basis of the observed architecture and capsule dimensions.

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Peripherally decorated binary microcapsules containing two liquids

Abstract

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