%0 Journal Article %1 WOS:000653544800003 %A Jackson, Jennifer C %A Camargos, Camilla H M %A Noronha, Victor T %A Paula, Amauri J %A Rezende, Camila A %A Faria, Andreia F %C 1155 16TH ST, NW, WASHINGTON, DC 20036 USA %D 2021 %I AMER CHEMICAL SOC %J ACS SUSTAINABLE CHEMISTRY & ENGINEERING %K Antimicrobial Biofouling Cellulose Membrane Thin-film biofouling; composite membranes; modification; nanocrystals; properties; resistance} surface {Nanocellulose; %N 19 %P 6534-6540 %R 10.1021/acssuschemeng.1c02389 %T Sustainable Cellulose Nanocrystals for Improved Antimicrobial Properties of Thin Film Composite Membranes %V 9 %X In this study, we were able to impart antimicrobial properties onto the surface of a commercial thin-film composite (TFC) membrane using sustainably derived cellulose nanocrystals (CNC) extracted from elephant grass (Pennisetum purpureum) leaves. Carboxylic acid-containing CNC were chemically bound to the amine-terminated polyamide active layer of TFC membranes using a cross-linking reaction. Scanning electron microscopy (SEM), atomic force microscopy (AFM), and Fourier transform infrared (FTIR) spectroscopy were conducted to confirm the presence of CNC on the membrane surface. TFC membranes functionalized with needle-like and antimicrobial CNC nanoparticles showed robust toxicity to bacteria, inactivating similar to 89% of attached Escherichia coli cells under contact. These findings establish that functionalization with CNC is a promising approach for mitigating biofouling on TFC membranes and substantiates the application of sustainable materials for the design of the next-generation membranes for water purification.

@article{WOS:000653544800003, abstract = {In this study, we were able to impart antimicrobial properties onto the surface of a commercial thin-film composite (TFC) membrane using sustainably derived cellulose nanocrystals (CNC) extracted from elephant grass (Pennisetum purpureum) leaves. Carboxylic acid-containing CNC were chemically bound to the amine-terminated polyamide active layer of TFC membranes using a cross-linking reaction. Scanning electron microscopy (SEM), atomic force microscopy (AFM), and Fourier transform infrared (FTIR) spectroscopy were conducted to confirm the presence of CNC on the membrane surface. TFC membranes functionalized with needle-like and antimicrobial CNC nanoparticles showed robust toxicity to bacteria, inactivating similar to 89% of attached Escherichia coli cells under contact. These findings establish that functionalization with CNC is a promising approach for mitigating biofouling on TFC membranes and substantiates the application of sustainable materials for the design of the next-generation membranes for water purification.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA}, author = {Jackson, Jennifer C and Camargos, Camilla H M and Noronha, Victor T and Paula, Amauri J and Rezende, Camila A and Faria, Andreia F}, biburl = {https://www.bibsonomy.org/bibtex/2b60bb5d933a807eade184ce8abe15275/ppgfis_ufc_br}, doi = {10.1021/acssuschemeng.1c02389}, interhash = {f4fbfd3f08f1e445515c47c3d89bd52c}, intrahash = {b60bb5d933a807eade184ce8abe15275}, issn = {2168-0485}, journal = {ACS SUSTAINABLE CHEMISTRY & ENGINEERING}, keywords = {Antimicrobial Biofouling Cellulose Membrane Thin-film biofouling; composite membranes; modification; nanocrystals; properties; resistance} surface {Nanocellulose;}, number = 19, pages = {6534-6540}, publisher = {AMER CHEMICAL SOC}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {Sustainable Cellulose Nanocrystals for Improved Antimicrobial Properties of Thin Film Composite Membranes}, tppubtype = {article}, volume = 9, year = 2021 }