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

Author(s)

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.

• Document type: Journal article
• Source: Journal of Physical Chemistry C; v. 125, n. 8, p. 11-pg., 2021-02-22.

Abstract

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)

• FAPESP's process: 13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass
• Grantee: Edgar Dutra Zanotto
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
• FAPESP's process: 18/25512-8 - Biocelulose-based Cell Culture Platform
• Grantee: Hernane da Silva Barud
• Support Opportunities: Regular Research Grants
• FAPESP's process: 15/12908-2 - Development of colored silica nanoparticles of natural base, and its application in textile substrates
• Grantee: Andreia Sofia de Sousa Monteiro
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 17/21005-1 - Cellulose Membrane with Functional Properties
• Grantee: Andreia Sofia de Sousa Monteiro
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate