Surfactant controlled zwitterionic cellulose nanofibril dispersions

Vincenzo Calabrese; Marcelo A. da Silva; Julien Schmitt; Juan C. Muñoz-Garcia; Valeria Gabrielli; Janet L. Scott; Jesus Angulo; Yaroslav Z. Khimyak; Karen J. Edler

doi:10.1039/C8SM00752G

Surfactant controlled zwitterionic cellulose nanofibril dispersions

Vincenzo Calabrese, Marcelo A. da Silva, Julien Schmitt, Juan C. Muñoz-Garcia, Valeria Gabrielli, Janet L. Scott, Jesus Angulo, Yaroslav Z. Khimyak, Karen J. Edler

Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

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Zwitterionic cellulose nanofibrils (ZCNFs) with an isoelectric point of 3.4 were obtained by grafting glycidyltrimethylammonium chloride onto TEMPO/NaBr/NaOCl-oxidised cellulose nanofibrils. The ZCNF aqueous dispersions were characterized via transmission electron microscopy, rheology and small angle neutron scattering, revealing a fibril-bundle structure with pronounced aggregation at pH 7. Surfactants were successfully employed to tune the stability of the ZCNF dispersions. Upon addition of the anionic surfactant, sodium dodecyl sulfate, the ZCNF dispersion shows individualized fibrils due to electrostatic stabilization. In contrast, upon addition of the cationic species dodecyltrimethylammonium bromide, the dispersion undergoes charge neutralization, leading to more pronounced flocculation.

Originalspråk	engelska
Sidor (från-till)	7793-7800
Antal sidor	8
Tidskrift	Soft Matter
Volym	14
Nummer	38
DOI	https://doi.org/10.1039/C8SM00752G
Status	Published - 2018
Externt publicerad	Ja

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© The Royal Society of Chemistry.

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title = "Surfactant controlled zwitterionic cellulose nanofibril dispersions",

abstract = "Zwitterionic cellulose nanofibrils (ZCNFs) with an isoelectric point of 3.4 were obtained by grafting glycidyltrimethylammonium chloride onto TEMPO/NaBr/NaOCl-oxidised cellulose nanofibrils. The ZCNF aqueous dispersions were characterized via transmission electron microscopy, rheology and small angle neutron scattering, revealing a fibril-bundle structure with pronounced aggregation at pH 7. Surfactants were successfully employed to tune the stability of the ZCNF dispersions. Upon addition of the anionic surfactant, sodium dodecyl sulfate, the ZCNF dispersion shows individualized fibrils due to electrostatic stabilization. In contrast, upon addition of the cationic species dodecyltrimethylammonium bromide, the dispersion undergoes charge neutralization, leading to more pronounced flocculation.",

author = "Vincenzo Calabrese and {da Silva}, {Marcelo A.} and Julien Schmitt and Mu{\~n}oz-Garcia, {Juan C.} and Valeria Gabrielli and Scott, {Janet L.} and Jesus Angulo and Khimyak, {Yaroslav Z.} and Edler, {Karen J.}",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

year = "2018",

doi = "10.1039/C8SM00752G",

language = "English",

volume = "14",

pages = "7793--7800",

journal = "Soft Matter",

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publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - Surfactant controlled zwitterionic cellulose nanofibril dispersions

AU - Calabrese, Vincenzo

AU - da Silva, Marcelo A.

AU - Schmitt, Julien

AU - Muñoz-Garcia, Juan C.

AU - Gabrielli, Valeria

AU - Scott, Janet L.

AU - Angulo, Jesus

AU - Khimyak, Yaroslav Z.

AU - Edler, Karen J.

PY - 2018

Y1 - 2018

N2 - Zwitterionic cellulose nanofibrils (ZCNFs) with an isoelectric point of 3.4 were obtained by grafting glycidyltrimethylammonium chloride onto TEMPO/NaBr/NaOCl-oxidised cellulose nanofibrils. The ZCNF aqueous dispersions were characterized via transmission electron microscopy, rheology and small angle neutron scattering, revealing a fibril-bundle structure with pronounced aggregation at pH 7. Surfactants were successfully employed to tune the stability of the ZCNF dispersions. Upon addition of the anionic surfactant, sodium dodecyl sulfate, the ZCNF dispersion shows individualized fibrils due to electrostatic stabilization. In contrast, upon addition of the cationic species dodecyltrimethylammonium bromide, the dispersion undergoes charge neutralization, leading to more pronounced flocculation.

AB - Zwitterionic cellulose nanofibrils (ZCNFs) with an isoelectric point of 3.4 were obtained by grafting glycidyltrimethylammonium chloride onto TEMPO/NaBr/NaOCl-oxidised cellulose nanofibrils. The ZCNF aqueous dispersions were characterized via transmission electron microscopy, rheology and small angle neutron scattering, revealing a fibril-bundle structure with pronounced aggregation at pH 7. Surfactants were successfully employed to tune the stability of the ZCNF dispersions. Upon addition of the anionic surfactant, sodium dodecyl sulfate, the ZCNF dispersion shows individualized fibrils due to electrostatic stabilization. In contrast, upon addition of the cationic species dodecyltrimethylammonium bromide, the dispersion undergoes charge neutralization, leading to more pronounced flocculation.

U2 - 10.1039/C8SM00752G

DO - 10.1039/C8SM00752G

M3 - Article

C2 - 30109338

AN - SCOPUS:85054326615

SN - 1744-683X

VL - 14

SP - 7793

EP - 7800

JO - Soft Matter

JF - Soft Matter

IS - 38

ER -

Surfactant controlled zwitterionic cellulose nanofibril dispersions

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