Novel carbon nanotube–cellulose acetate nanocomposite membranes for water filtration applications

Badawi, Nouran El; Ramadan, Adham R.; Esawi, Amal M. K.; El-Morsi, Mohamed

doi:10.1016/j.desal.2014.03.005

Cited by 97 publications

(35 citation statements)

References 33 publications

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“…In our previous work we underlined that even small amount of GO produces either increase or decrease of oriented domain size of the polymer, [28] Our previous observations were associated with GO/polymer matrix interaction, when GO polymer interaction takes place the polymer chains are adsorbed on the GO surface and more ordered arrangement of polymer is observed. [28,29] Therefore, even if by FTIR or Raman spectroscopy we were not able to clearly prove the interaction between ÀCOOH and ÀOH groups from GO and C¼O groups from AC via hydrogen bonding; it is believed that a good interfacial adhesion takes place between the two components. The lack of GO common peak from the composites diffractograms might suggest the successful dispersion of the GO individual sheets within the polymer matrix.…”

Section: X-ray Diffraction Studiesmentioning

confidence: 90%

“…Similar observations were reported by Badawi et al, who found that the ÀCOOH group of functionalized carbon nanotubes could create H bonds with the nonsolvent molecules (deionized water) and delay phase inversion. [29] Moreover, by their positioning throughout the polymer matrix, CNTs seemed to obstruct some of the pores. Considering the planar conformation of GO layers, as well as the existent ÀCOOH and ÀOH surface functional groups, similar processes could govern the morphology changes revealed by this study.…”

Section: Morphological Studiesmentioning

confidence: 99%

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Fabrication of cellulose triacetate/graphene oxide porous membrane

Ioniță

Crică

Voicu

et al. 2015

Polym. Adv. Technol.

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Cellulose triacetate (AC)/graphene oxide (GO) porous membranes were successfully fabricated by combining ultrasonication and phase inversion method. The structures and morphologies of the resultant composite membranes were investigated by X-ray diffraction (XRD), scanning electron microscopy, and transmission electron microscopy, respectively. Microscopic and X-ray diffraction measurements revealed that GO sheets were uniformly dispersed within the AC matrix. The pore size and structure were modulated by changing GO concentration from 0.25 to 1 wt%. Membrane thermal properties were also studied. Among all tested membranes, the most favorable GO amount was 1 wt%, giving Td 3% of 274°C, which represents a 22°C enhancement compared with AC. Conversely, the membranes showed improved barrier properties against water and ethanol. The decrease of both ethanol and water fluxes was assigned to the stabilization of composite membrane structure, as a result of GO progressive addition. Bovine serum albumin rejection assay indicated an increasing from 78% in the case of CA membrane to 99% in the case of CA/GO 1 wt% of the rejection degree after 90 min.

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Section: X-ray Diffraction Studiesmentioning

confidence: 90%

Section: Morphological Studiesmentioning

confidence: 99%

Fabrication of cellulose triacetate/graphene oxide porous membrane

Ioniță

Crică

Voicu

et al. 2015

Polym. Adv. Technol.

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“…However, the CA membrane has smooth surface and less pore structure under the surface layer thus exhibits insufficient hydrophilicity and the extremely low water flux [18][19][20]. Then, several approaches have been proposed to enhance the performance of CA membrane, such as added different additives like polyethylene glycol 600 (PEG 600) [21], multi walled carbon nanotubes (MWCNTs) [22] and sodium dodecyl sulfate (SDS) [14], showing specific affinity toward a target organic compound.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of new cellulose acetate blend imprinted membrane assisted with ionic liquid ([BMIM]Cl) for selective adsorption of salicylic acid from industrial wastewater

Meng

et al. 2015

Separation and Purification Technology

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“…The CNTs-filled cellulose nanocomposites prepared with various fabrication techniques included phase inversion, vacuum filtration, and flash freezing (Li et al 2013a, b, c, d, e;Qi et al 2013a, b, c;El Badawi et al 2014). The CNTs-filled cellulose nanocomposites membrane are prepared by phase inversion using acetone as solvent and 20 wt% deionized water as nonsolvent.…”

Section: Cnts: In Cellulose Polymeric Compositesmentioning

confidence: 99%

Multifunctionalized Carbon Nanotubes Polymer Composites: Properties and Applications

Julkapli

Sapuan

2015

Advanced Structured Materials

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Carbon nanotubes (CNTs) is a rigid rod-like nanoscale material produced from carbon in powder, liquid, or gel form via acid or chemical hydrolysis. Due to its unique and exceptional renewability, biodegradability, mechanical, physicochemical properties, and abundance, the incorporation associated with a small quantity of CNTs to polymeric matrices enhance the mechanical and thermal resistance, and also stability of the latter by several orders of magnitude. Moreover, NCC-derived carbon materials are of no serious threat to the environment, providing further impetus for the development and applications of this green and renewable biomaterial for lightweight and degradable composites. Surface functionalization of CNTs remains the focus of CNTs research in tailoring its properties for dispersion in hydrophilic and hydrophobic media. Through functionalization, the attachment of appropriate chemical functionalities between conjugated sp 2 of CNTs and polymeric matrix is established. It is thus of utmost importance that the tools and protocols for imaging CNTs in a complex matrix and quantify its reinforcement, antimicrobial, stability, hydrophilicity, and biodegradability are be developed.

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Novel carbon nanotube–cellulose acetate nanocomposite membranes for water filtration applications

Cited by 97 publications

References 33 publications

Fabrication of cellulose triacetate/graphene oxide porous membrane

Fabrication of cellulose triacetate/graphene oxide porous membrane

Fabrication of new cellulose acetate blend imprinted membrane assisted with ionic liquid ([BMIM]Cl) for selective adsorption of salicylic acid from industrial wastewater

Multifunctionalized Carbon Nanotubes Polymer Composites: Properties and Applications

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