Mechanically Robust Gels Formed from Hydrophobized Cellulose Nanocrystals | Zendy

Rinat Nigmatullin | Zendy; Robert L. Harniman | Zendy; Valeria Gabrielli | Zendy; Juan C. MuñozGarcía | Zendy; Yaroslav Z. Khimyak | Zendy; Jesús Angulo | Zendy; Stephen J. Eichhorn | Zendy

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Mechanically Robust Gels Formed from Hydrophobized Cellulose Nanocrystals

Author(s) -

Rinat Nigmatullin,

Robert L. Harniman,

Valeria Gabrielli,

Juan C. MuñozGarcía,

Yaroslav Z. Khimyak,

Jesús Angulo,

Stephen J. Eichhorn

Publication year - 2018

Publication title -

acs applied materials and interfaces

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.535

H-Index - 228

eISSN - 1944-8252

pISSN - 1944-8244

DOI - 10.1021/acsami.8b05067

Subject(s) - materials science , cellulose , self healing hydrogels , nanocrystal , chemical engineering , supramolecular chemistry , starch , nanotechnology , organic chemistry , molecule , polymer chemistry , chemistry , engineering

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.

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