Directed Assembly of Cellulose Nanocrystals in Their Native Solid-State Template of a Processed Fiber Cell Wall

Autor(es)

Solala, Iina ^[1] ; Driemeier, Carlos ^[2] ; Mautner, Andreas ^[3] ; Penttila, Paavo A. ^{[1, 4]} ; Seitsonen, Jani ^[5] ; Leppanen, Miika ^[6] ; Mihhels, Karl ^[1] ; Kontturi, Eero ^[1]

Afiliação do(s) autor(es)

^[1] Aalto Univ, Dept Bioprod & Biosyst, POB 16300, FI-00076 Aalto - Finland

^[2] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Biorenewables Natl Lab LNBR, BR-13083970 Campinas - Brazil

^[3] Univ Vienna, Polymer & Composite Engn PaCE Grp, Inst Mat Chem & Res, Wahringerstr 42, A-1090 Vienna - Austria

^[4] Inst Max von Laue Paul Langevin ILL, Large Scale Struct Grp, 71 Ave Martyrs, CS 20156, F-38042 Grenoble 9 - France

^[5] Aalto Univ, Nanomicroscopy Ctr, POB 15100, FI-00076 Aalto - Finland

^[6] Univ Jyvaskyla, Nanosci Ctr, Jyvaskyla 40014 - Finland

• Tipo de documento: Artigo Científico
• Fonte: MACROMOLECULAR RAPID COMMUNICATIONS; v. 42, n. 12 JUN 2021.
• Citações Web of Science: 0

Resumo

Nanoparticle assembly is intensely surveyed because of the numerous applications within fields such as catalysis, batteries, and biomedicine. Here, directed assembly of rod-like, biologically derived cellulose nanocrystals (CNCs) within the template of a processed cotton fiber cell wall, that is, the native origin of CNCs, is reported. It is a system where the assembly takes place in solid state simultaneously with the top-down formation of the CNCs via hydrolysis with HCl vapor. Upon hydrolysis, cellulose microfibrils in the fiber break down to CNCs that then pack together, resulting in reduced pore size distribution of the original fiber. The denser packing is demonstrated by N-2 adsorption, water uptake, thermoporometry, and small-angle X-ray scattering, and hypothetically assigned to attractive van der Waals interactions between the CNCs. (AU)

• Processo FAPESP: 13/07932-6 - Componentes desordenados de lignoceluloses: caracterização por espectroscopia de infravermelho associada à dinâmica de troca isotópica
• Beneficiário: Carlos Eduardo Driemeier
• Modalidade de apoio: Auxílio à Pesquisa - Regular