Heteroaggregation effects on Pickering stabilization using oppositely charged cellulose nanocrystal and nanochitin

Shasha Guo, Ya Zhu, Wenyang Xu, Siqi Huan, Jun Li, Tao Song, Long Bai*, Orlando J. Rojas*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

13 Sitaatiot (Scopus)
59 Lataukset (Pure)

Abstrakti

Pickering emulsions are stabilized using complexes of cellulose nanocrystals (CNC) and nanochitin (NCh). The colloidal behavior and heteroaggregation in aqueous media are studied in relation to complex formation and net charge. The complexes are remarkably effective in stabilizing oil-in-water Pickering emulsions under conditions of slightly net positive or negative charges, as determined by the CNC/NCh mass ratio. Close to charge neutrality (CNC/NCh ~5), large heteroaggregates form, resulting in unstable emulsions. By contrast, under net cationic conditions, interfacial arrest of the complexes leads to non-deformable emulsion droplets with high stability (no creaming for 9 months). At given CNC/NCh concentrations, emulsions with up to 50% oil fraction are produced. This study shows how to control emulsion properties beyond consideration of the typical formulation variables, for instance, through adjusting CNC/NCh ratio or charge stoichiometry. We highlight the possibilities that are available for emulsion stabilization by using a combination of polysaccharide nanoparticles.

AlkuperäiskieliEnglanti
Artikkeli120154
JulkaisuCarbohydrate Polymers
Vuosikerta299
Varhainen verkossa julkaisun päivämäärä5 lokak. 2022
DOI - pysyväislinkit
TilaJulkaistu - 1 tammik. 2023
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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