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

Author(s)

Monteiro, Andreia S. ^[1] ; de Oliveira, Marcos ^[2] ; Santagneli, Silvia ^[1] ; Carcel, Carole ^[3] ; Gutmann, Torsten ^[4] ; Buntkowsky, Gerd ^[4] ; Man, Michel Wong Chi ^[3] ; Barud, Hernane S. ^[5] ; Ribeiro, Sidney J. L. ^[1]

Affiliation

^[1] Sao Paulo State Univ UNESP, Inst Chem, BR-14800060 Araraquara, SP - Brazil

^[2] Univ Sao Paulo, Sao Carlos Inst Phys, BR-13560970 Sao Carlos, SP - Brazil

^[3] Univ Montpellier, ENSCM, CNRS, ICGM, Montpellier - France

^[4] Tech Univ Darmstadt, Inst Phys Chem, D-64287 Darmstadt - Germany

^[5] Univ Araraquara UNIARA, BR-14801320 Araraquara, SP - Brazil

• Document type: Journal article
• Source: Journal of Physical Chemistry C; v. 125, n. 8, SI, p. 4498-4508, MAR 4 2021.
• Web of Science Citations: 0

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: 18/25512-8 - Biocelulose-based Cell Culture Platform
• Grantee: Hernane da Silva Barud
• Support type: Regular Research Grants
• FAPESP's process: 17/21005-1 - Cellulose Membrane with Functional Properties
• Grantee: Andreia Sofia de Sousa Monteiro
• Support type: Scholarships abroad - Research Internship - Doctorate
• FAPESP's process: 13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass
• Grantee: Edgar Dutra Zanotto
• Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC
• 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 type: Scholarships in Brazil - Doctorate