Particulate Coatings via Evaporation-Induced Self-Assembly of Polydisperse Colloidal Lignin on Solid Interfaces

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

Organisaatiot

  • Institute of Catalysis and Surface Chemistry of the Polish Academy of Sciences
  • Escola Superior d’Enginyeries Industrial

Kuvaus

Polydisperse smooth and spherical biocolloidal particles were suspended in aqueous media and allowed to consolidate via evaporation-induced self-assembly. The stratification of the particles at the solid-air interface was markedly influenced, but not monotonically, by the drying rate. Cross-sectional imaging via electron microscopy indicated a structured coating morphology that was distinctive from that obtained by using particles with a mono- or bimodal distribution. Segregation patterns were found to derive from the interplay of particle diffusion, interparticle forces, and settling dynamics. Supporting our experimental findings, computer simulations showed an optimal drying rate for achieving maximum segregation. Overall, stratified coatings comprising nano- and microparticles derived from lignin are expected to open opportunities for multifunctional structures that can be designed and predicted on the basis of experimental Péclet numbers and computational order.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut5759-5771
Sivumäärä13
JulkaisuLangmuir
Vuosikerta34
Numero20
TilaJulkaistu - 22 toukokuuta 2018
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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