Títol:
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Particulate coatings via evaporation-induced self-assembly of polydisperse colloidal lignin on solid interfaces
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Autor/a:
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Cusola Aumedes, Oriol; Kivistö, Samu; Vierros, Sampsa; Batys, Piotr; Ago, Mariko; Tardy, Blaise L.; Greca, Luiz G.; Roncero Vivero, María Blanca; Sammalkorpi, Maria; Rojas, Orlando J.
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Altres autors:
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Universitat Politècnica de Catalunya. Departament d'Expressió Gràfica a l'Enginyeria; Universitat Politècnica de Catalunya. CELBIOTECH - Grup de Recerca: Enginyeria Paperera |
Abstract:
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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 |
Matèries:
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-Àrees temàtiques de la UPC::Enginyeria química -Biocolloids -Nanoparticles -Lignin -Particles -Colloids -Nanopartícules -Lignina -Partícules (Matèria) -Col·loides |
Drets:
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Tipus de document:
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Article - Versió actualitzada Article |
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