Modification of Bacterial Cellulose Membrane with 1,4-Bis(triethoxysilyl)benzene: A Thorough Physical-Chemical Characterization Study

Autor(es)

Monteiro, Andreia S. ; de Oliveira, Marcos ; Santagneli, Silvia ; Carcel, Carole ; Gutmann, Torsten ; Buntkowsky, Gerd ; Man, Michel Wong Chi ; Barud, Hernane S. ; Ribeiro, Sidney J. L.

• Tipo de documento: Artigo Científico
• Fonte: Journal of Physical Chemistry C; v. 125, n. 8, p. 11-pg., 2021-02-22.

Resumo

Bacterial cellulose (BC) combined with organo-bridged porous silica nanoparticles offers potential opportunities to develop smart hybrid materials such as advanced drug delivery nanosystems. This work reports the preparation of bacterial cellulose membrane (BCM) and their modification by in situ methodology with the organo-bridged precursor 1,4-bis(triethoxysilyl)benzene (BTEB). BTEB was successfully incorporated into the BCM, and spherical hybrid silica nanoparticles with heterogeneous particle size (30-100 nm) and probably porous structure were formed and characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared-attenuated total reflectance (FTIR-ATR), thermogravimetric analysis (TGA), and solid state nuclear magnetic resonance (NMR). We further combined solid-state NMR with dynamic nuclear polarization (DNP) to achieve sensitivity enhancement and to selectively enhance the NMR signal of the hydrophobic BTEB moieties on the BCM surface. This allowed us to get more detailed structural information about the BTEB-BCM multicomponent material. (AU)

• Processo FAPESP: 13/07793-6 - CEPIV - Centro de Ensino, Pesquisa e Inovação em Vidros
• Beneficiário: Edgar Dutra Zanotto
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
• Processo FAPESP: 18/25512-8 - Plataforma para Cultura de Células Baseada em Biocelulose
• Beneficiário: Hernane da Silva Barud
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 15/12908-2 - Desenvolvimento de nanopartículas de sílica coloridas de base naturais, e sua aplicação em substratos têxteis
• Beneficiário: Andreia Sofia de Sousa Monteiro
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 17/21005-1 - Membrana de Celulose com Propriedades Funcionais
• Beneficiário: Andreia Sofia de Sousa Monteiro
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado