Self-Assembled Networks of Short and Long Chitin Nanoparticles for Oil/Water Interfacial Superstabilization

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Self-Assembled Networks of Short and Long Chitin Nanoparticles for Oil/Water Interfacial Superstabilization. / Bai, Long; Huan, Siqi; Xiang, Wenchao; Liu, Liang; Yang, Yang; Nugroho, Robertus Wahyu N.; Fan, Yimin; Rojas, Orlando J.

In: ACS Sustainable Chemistry and Engineering, Vol. 7, No. 7, 01.04.2019, p. 6497-6511.

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@article{ff4ffc3458c34b71aed61167982db566,
title = "Self-Assembled Networks of Short and Long Chitin Nanoparticles for Oil/Water Interfacial Superstabilization",
abstract = "Highly charged (zeta potential ζ = +105 mV, acetate counterions) chitin nanoparticles (NCh) of three different average aspect ratios (∼5, 25, and >60) were obtained by low-energy deconstruction of partially deacetylated chitin. The nanoparticles were effective in reducing the interfacial tension and stabilized the oil/water interface via network formation (interfacial dilatational rheology data) becoming effective in stabilizing Pickering systems, depending on NCh size, composition, and formulation variables. The improved interfacial wettability and electrosteric repulsion facilitated control over the nanoparticle's surface coverage on the oil droplets, their aspect ratio and stability against coalescence during long-term storage. Emulsion superstabilization (oil fractions below 0.5) occurred by the microstructuring and thickening effect of NCh that formed networks at concentrations as low as 0.0005 wt {\%}. The ultrasound energy used during emulsion preparation simultaneously reduced the longer nanoparticles, producing very stable, fine oil droplets (diameter ∼1 μm). Our findings indicate that NCh surpasses any reported biobased nanoparticle, including nanocelluloses, for its ability to stabilize interfaces at ultralow concentrations and represent a step-forward in efforts to fully replace surfactants in multiphase systems.",
keywords = "Deconstruction, Nanochitin, Pickering emulsion, Rodlike particles, Superstabilization",
author = "Long Bai and Siqi Huan and Wenchao Xiang and Liang Liu and Yang Yang and Nugroho, {Robertus Wahyu N.} and Yimin Fan and Rojas, {Orlando J.}",
year = "2019",
month = "4",
day = "1",
doi = "10.1021/acssuschemeng.8b04023",
language = "English",
volume = "7",
pages = "6497--6511",
journal = "ACS Sustainable Chemistry and Engineering",
issn = "2168-0485",
publisher = "AMERICAN CHEMICAL SOCIETY",
number = "7",

}

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TY - JOUR

T1 - Self-Assembled Networks of Short and Long Chitin Nanoparticles for Oil/Water Interfacial Superstabilization

AU - Bai, Long

AU - Huan, Siqi

AU - Xiang, Wenchao

AU - Liu, Liang

AU - Yang, Yang

AU - Nugroho, Robertus Wahyu N.

AU - Fan, Yimin

AU - Rojas, Orlando J.

PY - 2019/4/1

Y1 - 2019/4/1

N2 - Highly charged (zeta potential ζ = +105 mV, acetate counterions) chitin nanoparticles (NCh) of three different average aspect ratios (∼5, 25, and >60) were obtained by low-energy deconstruction of partially deacetylated chitin. The nanoparticles were effective in reducing the interfacial tension and stabilized the oil/water interface via network formation (interfacial dilatational rheology data) becoming effective in stabilizing Pickering systems, depending on NCh size, composition, and formulation variables. The improved interfacial wettability and electrosteric repulsion facilitated control over the nanoparticle's surface coverage on the oil droplets, their aspect ratio and stability against coalescence during long-term storage. Emulsion superstabilization (oil fractions below 0.5) occurred by the microstructuring and thickening effect of NCh that formed networks at concentrations as low as 0.0005 wt %. The ultrasound energy used during emulsion preparation simultaneously reduced the longer nanoparticles, producing very stable, fine oil droplets (diameter ∼1 μm). Our findings indicate that NCh surpasses any reported biobased nanoparticle, including nanocelluloses, for its ability to stabilize interfaces at ultralow concentrations and represent a step-forward in efforts to fully replace surfactants in multiphase systems.

AB - Highly charged (zeta potential ζ = +105 mV, acetate counterions) chitin nanoparticles (NCh) of three different average aspect ratios (∼5, 25, and >60) were obtained by low-energy deconstruction of partially deacetylated chitin. The nanoparticles were effective in reducing the interfacial tension and stabilized the oil/water interface via network formation (interfacial dilatational rheology data) becoming effective in stabilizing Pickering systems, depending on NCh size, composition, and formulation variables. The improved interfacial wettability and electrosteric repulsion facilitated control over the nanoparticle's surface coverage on the oil droplets, their aspect ratio and stability against coalescence during long-term storage. Emulsion superstabilization (oil fractions below 0.5) occurred by the microstructuring and thickening effect of NCh that formed networks at concentrations as low as 0.0005 wt %. The ultrasound energy used during emulsion preparation simultaneously reduced the longer nanoparticles, producing very stable, fine oil droplets (diameter ∼1 μm). Our findings indicate that NCh surpasses any reported biobased nanoparticle, including nanocelluloses, for its ability to stabilize interfaces at ultralow concentrations and represent a step-forward in efforts to fully replace surfactants in multiphase systems.

KW - Deconstruction

KW - Nanochitin

KW - Pickering emulsion

KW - Rodlike particles

KW - Superstabilization

UR - http://www.scopus.com/inward/record.url?scp=85063127590&partnerID=8YFLogxK

U2 - 10.1021/acssuschemeng.8b04023

DO - 10.1021/acssuschemeng.8b04023

M3 - Article

AN - SCOPUS:85063127590

VL - 7

SP - 6497

EP - 6511

JO - ACS Sustainable Chemistry and Engineering

JF - ACS Sustainable Chemistry and Engineering

SN - 2168-0485

IS - 7

ER -

ID: 32879547