Mechanically Robust Gels Formed from Hydrophobized Cellulose Nanocrystals

Rinat Nigmatullin; Robert Harniman; Valeria Gabrielli; Juan C. Muñoz-García; Yaroslav Z. Khimyak; Jesús Angulo; Stephen J. Eichhorn

doi:10.1021/acsami.8b05067

Mechanically Robust Gels Formed from Hydrophobized Cellulose Nanocrystals

Rinat Nigmatullin^*
, Robert Harniman
, Valeria Gabrielli
, Juan C. Muñoz-García
, Yaroslav Z. Khimyak
, Jesús Angulo
, Stephen J. Eichhorn

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

37 Citations (Scopus)

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Abstract

Cellulose nanocrystals (CNCs) that bind to each other through associative hydrophobic interactions have been synthesized by modifying sulfated CNCs (sCNCs) with hydrophobic moieties. These octyl-CNCs form gels at significantly lower concentrations than parent sCNCs, producing extremely strong hydrogels. Unlike sCNCs, these octyl-CNCs do not form ordered liquid crystalline phases indicating a random association into a robust network driven by hydrophobic interactions. Furthermore, involvement of the octyl-CNCs into multicomponent supramolecular assembly was demonstrated in combination with starch. AFM studies confirm favorable interactions between starch and octyl-CNCs, which is thought to be the source of the dramatic increase in gel strength.

Original language	English
Pages (from-to)	19318-19322
Number of pages	5
Journal	ACS Applied Materials and Interfaces
Volume	10
Issue number	23
Early online date	23 May 2018
DOIs	https://doi.org/10.1021/acsami.8b05067
Publication status	Published - 13 Jun 2018

Keywords

adhesive force
cellulose nanocrystals (CNCs)
gels
rheology
starch

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This is the author accepted manuscript (AAM). The final published version (version of record) is available online via ACS at https://pubs.acs.org/doi/full/10.1021/acsami.8b05067 . Please refer to any applicable terms of use of the publisher.
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This is the author accepted manuscript (AAM). The final published version (version of record) is available online via ACS at https://pubs.acs.org/doi/full/10.1021/acsami.8b05067 . Please refer to any applicable terms of use of the publisher.
Accepted author manuscript, 613 KBLicence: CC BY

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@article{d7614526060446ca924def9d7bc94611,

title = "Mechanically Robust Gels Formed from Hydrophobized Cellulose Nanocrystals",

abstract = "Cellulose nanocrystals (CNCs) that bind to each other through associative hydrophobic interactions have been synthesized by modifying sulfated CNCs (sCNCs) with hydrophobic moieties. These octyl-CNCs form gels at significantly lower concentrations than parent sCNCs, producing extremely strong hydrogels. Unlike sCNCs, these octyl-CNCs do not form ordered liquid crystalline phases indicating a random association into a robust network driven by hydrophobic interactions. Furthermore, involvement of the octyl-CNCs into multicomponent supramolecular assembly was demonstrated in combination with starch. AFM studies confirm favorable interactions between starch and octyl-CNCs, which is thought to be the source of the dramatic increase in gel strength.",

keywords = "adhesive force, cellulose nanocrystals (CNCs), gels, rheology, starch",

author = "Rinat Nigmatullin and Robert Harniman and Valeria Gabrielli and Mu{\~n}oz-Garc{\'i}a, \{Juan C.\} and Khimyak, \{Yaroslav Z.\} and Jes{\'u}s Angulo and Eichhorn, \{Stephen J.\}",

year = "2018",

month = jun,

day = "13",

doi = "10.1021/acsami.8b05067",

language = "English",

volume = "10",

pages = "19318--19322",

journal = "ACS Applied Materials and Interfaces",

issn = "1944-8244",

publisher = "American Chemical Society",

number = "23",

}

TY - JOUR

T1 - Mechanically Robust Gels Formed from Hydrophobized Cellulose Nanocrystals

AU - Nigmatullin, Rinat

AU - Harniman, Robert

AU - Gabrielli, Valeria

AU - Muñoz-García, Juan C.

AU - Khimyak, Yaroslav Z.

AU - Angulo, Jesús

AU - Eichhorn, Stephen J.

PY - 2018/6/13

Y1 - 2018/6/13

N2 - Cellulose nanocrystals (CNCs) that bind to each other through associative hydrophobic interactions have been synthesized by modifying sulfated CNCs (sCNCs) with hydrophobic moieties. These octyl-CNCs form gels at significantly lower concentrations than parent sCNCs, producing extremely strong hydrogels. Unlike sCNCs, these octyl-CNCs do not form ordered liquid crystalline phases indicating a random association into a robust network driven by hydrophobic interactions. Furthermore, involvement of the octyl-CNCs into multicomponent supramolecular assembly was demonstrated in combination with starch. AFM studies confirm favorable interactions between starch and octyl-CNCs, which is thought to be the source of the dramatic increase in gel strength.

AB - Cellulose nanocrystals (CNCs) that bind to each other through associative hydrophobic interactions have been synthesized by modifying sulfated CNCs (sCNCs) with hydrophobic moieties. These octyl-CNCs form gels at significantly lower concentrations than parent sCNCs, producing extremely strong hydrogels. Unlike sCNCs, these octyl-CNCs do not form ordered liquid crystalline phases indicating a random association into a robust network driven by hydrophobic interactions. Furthermore, involvement of the octyl-CNCs into multicomponent supramolecular assembly was demonstrated in combination with starch. AFM studies confirm favorable interactions between starch and octyl-CNCs, which is thought to be the source of the dramatic increase in gel strength.

KW - adhesive force

KW - cellulose nanocrystals (CNCs)

KW - gels

KW - rheology

KW - starch

UR - https://www.scopus.com/pages/publications/85047616274

U2 - 10.1021/acsami.8b05067

DO - 10.1021/acsami.8b05067

M3 - Article (Academic Journal)

C2 - 29790733

SN - 1944-8244

VL - 10

SP - 19318

EP - 19322

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 23

ER -

Mechanically Robust Gels Formed from Hydrophobized Cellulose Nanocrystals

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New Enzymatically Produced Interpenetrating Starch-Cellulose Gells

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Mechanically Robust Gels Formed from Hydrophobized Cellulose Nanocrystals

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New Enzymatically Produced Interpenetrating Starch-Cellulose Gells

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