Highly stiff yet elastic microcapsules incorporating cellulose nanofibrils

Gilad Kaufman, Shomeek Mukhopadhyay, Yekaterina Rokhlenko, Siamak Nejati, Rostislav Boltyanskiy, Youngwoo Choo, Michael Loewenberg, Chinedum O. Osuji

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Microcapsules with high mechanical stability and elasticity are desirable in a variety of contexts. We report a single-step method to fabricate such microcapsules by microfluidic interfacial complexation between high stiffness cellulose nanofibrils (CNF) and an oil-soluble cationic random copolymer. Single-capsule compression measurements reveal an elastic modulus of 53 MPa for the CNF-based capsule shell with complete recovery of deformation from strains as large as 19%. We demonstrate the ability to manipulate the shell modulus by the use of polyacrylic acid (PAA) as a binder material, and observe a direct relationship between the shell modulus and the PAA concentration, with moduli as large as 0.5 GPa attained. These results demonstrate that CNF incorporation provides a facile route for producing strong yet flexible microcapsule shells.

Original languageEnglish (US)
Pages (from-to)2733-2737
Number of pages5
JournalSoft Matter
Volume13
Issue number15
DOIs
StatePublished - Jan 1 2017

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cellulose
Cellulose
carbopol 940
Capsules
capsules
binders (materials)
acids
stiffness
modulus of elasticity
copolymers
elastic properties
oils
recovery
routes
Mechanical stability
Complexation
Microfluidics
Binders
Elasticity
Oils

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics

Cite this

Kaufman, G., Mukhopadhyay, S., Rokhlenko, Y., Nejati, S., Boltyanskiy, R., Choo, Y., ... Osuji, C. O. (2017). Highly stiff yet elastic microcapsules incorporating cellulose nanofibrils. Soft Matter, 13(15), 2733-2737. https://doi.org/10.1039/C7SM00092H

Highly stiff yet elastic microcapsules incorporating cellulose nanofibrils. / Kaufman, Gilad; Mukhopadhyay, Shomeek; Rokhlenko, Yekaterina; Nejati, Siamak; Boltyanskiy, Rostislav; Choo, Youngwoo; Loewenberg, Michael; Osuji, Chinedum O.

In: Soft Matter, Vol. 13, No. 15, 01.01.2017, p. 2733-2737.

Research output: Contribution to journalArticle

Kaufman, G, Mukhopadhyay, S, Rokhlenko, Y, Nejati, S, Boltyanskiy, R, Choo, Y, Loewenberg, M & Osuji, CO 2017, 'Highly stiff yet elastic microcapsules incorporating cellulose nanofibrils', Soft Matter, vol. 13, no. 15, pp. 2733-2737. https://doi.org/10.1039/C7SM00092H
Kaufman G, Mukhopadhyay S, Rokhlenko Y, Nejati S, Boltyanskiy R, Choo Y et al. Highly stiff yet elastic microcapsules incorporating cellulose nanofibrils. Soft Matter. 2017 Jan 1;13(15):2733-2737. https://doi.org/10.1039/C7SM00092H
Kaufman, Gilad ; Mukhopadhyay, Shomeek ; Rokhlenko, Yekaterina ; Nejati, Siamak ; Boltyanskiy, Rostislav ; Choo, Youngwoo ; Loewenberg, Michael ; Osuji, Chinedum O. / Highly stiff yet elastic microcapsules incorporating cellulose nanofibrils. In: Soft Matter. 2017 ; Vol. 13, No. 15. pp. 2733-2737.
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