Fully bio-based zwitterionic membranes with superior antifouling and antibacterial properties prepared <i>via</i> surface-initiated free-radical polymerization of poly(cysteine methacrylate)

Valencia, Luis; Kumar, Sugam; Jalvo, Blanca; Mautner, Andreas; Salazar-Alvarez, Germán; Mathew, Aji P.

doi:10.1039/c8ta06095a

Cited by 69 publications

(56 citation statements)

References 31 publications

(43 reference statements)

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“…Quaternary ammonium cations are permanently charged species at a variety of different pH values and are unreactive toward oxidants, acids, electrophiles, and nucleophiles. The hydrophilic structure of ACNF-Zwi could be beneficial for future use in water filter systems as the membranes are more easily hydrated which could simplify interactions between the zwitterionic groups and heavy metal contaminants in water effluents [37]. As quaternary ammonium cations are charged at a vast spectrum of pH values, the use of these compounds in filter membranes could facilitate the purification of water in different conditions.…”

Section: Discussionmentioning

confidence: 99%

Zwitterionic Acetylated Cellulose Nanofibrils

2019

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A strategy is devised to synthesize zwitterionic acetylated cellulose nanofibrils (CNF). The strategy included acetylation, periodate oxidation, Schiff base reaction, borohydride reduction, and a quaternary ammonium reaction. Acetylation was performed in glacial acetic acid with a short reaction time of 90 min, yielding, on average, mono-acetylated CNF with hydroxyl groups available for further modification. The products from each step were characterized by FTIR spectroscopy, ζ-potential, SEM-EDS, AFM, and titration to track and verify the structural changes along the sequential modification route.

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Section: Discussionmentioning

confidence: 99%

Zwitterionic Acetylated Cellulose Nanofibrils

2019

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“…6) of the nanocrystals suggests three main chemical environments of carbon, as reported before for cellulosic materials: one major peak at 286.8 eV corresponding to C-O bond; a peak at 285 eV corresponding to C-C bonds, and a third one around 288 eV that corresponds to O-C-O bond. 26 Furthermore, a fourth small population around 289 eV was also appreciated, corresponding to the presence of carboxyl groups, present before and aer modication. In order to elucidate the surface modication carried out in this work, the attention was centered specially in the aliphatic carbon region designated as C1 (centered at 285 eV), as normally cellulose is devoid of C1 carbon because of its polysaccharide structure.…”

Section: Characterization Of Modied Cellulose Nanocrystalsmentioning

confidence: 95%

Plasma surface-modification of cellulose nanocrystals: a green alternative towards mechanical reinforcement of ABS

et al. 2019

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“…Growth inhibition and antibiofilm properties of CNMs have been described against S.aureus upon chemical modification by the addition of bactericidal agents such as lysozyme and nisin 104 and titanium-aluminium-niobium-gentamicin 105 . Moreover, cellulose/nanocellulose filters grafted with a zwitterionic poly(cysteine methacrylate) 106 have shown inhibition of biofilm formation and potential for water treatment applications. When addressing bacterial behavior, such modifications are appropriate.…”

Section: Resultsmentioning

confidence: 99%

Coaxial Spinning of All-Cellulose Systems for Enhanced Toughness: Filaments of Oxidized Nanofibrils Sheathed in Cellulose II Regenerated from a Protic Ionic Liquid

et al. 2020

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Hydrogels of TEMPO-oxidized nanocellulose (TO-CNF) were stabilized for dry-jet wet spinning using a shell of cellulose dissolved in 1,5-diazabicyclo[4.3.0]non-5-enium propionate ([DBNH][CO2Et]), a protic ionic liquid (PIL). Coagulation in an acidic water bath resulted in continuous core-shell filaments (CSF) that were tough and flexible: average dry (and wet) toughness of ~11 (2) MJ . m -3 and elongation of ~9 ( 14) %. CSF morphology, chemical composition, thermal stability, crystallinity, and bacterial activity were assessed using scanning electron microscopy with energy dispersive X-ray spectroscopy, liquid-state nuclear magnetic resonance, Fourier transform infrared spectroscopy, thermogravimetric analysis, pyrolysis gas chromatography-mass spectrometry, wide angle X-ray scattering and bacterial cell culturing, respectively. The coaxial wet spinning yields PIL-free systems carrying on the surface the cellulose II polymorph, which not only enhances the toughness of the filaments but facilities their functionalization.apply a strategy based on the principles of the circular economy. Bio-based materials and, in particular, cellulose nanomaterials (CNMs) have become excellent candidates in this regard, as they could partially replace materials based on non-renewable resources. Indeed, CNMs enable high-performance, green functional materials with a broad spectrum of applications, e.g., electronics, biomedical and tissue engineering scaffolds, coatings, food, textiles, and even in daily use goods [1][2][3][4][5][6][7][8] .Cellulose resources have the potential of becoming a platform to develop novel CNMs with high mechanical performance since nanocellulose, in its cellulose I crystalline phase, possess an elastic modulus of about 150 GPa and 18-50GPa in the longitudinal and transverse directions, respectively 9,10 . The regioselective C6 oxidation of nanocellulose fibers can be additionally catalyzed by the use of the 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) nitroxyl radical to produce hydrogels with high transparency 11 , an extensive degree of fibrillation 12 , and low cytotoxicity 13 . These TEMPO-oxidized cellulose nanofibers (TO-CNF) are suitable for applications in diverse fields such as packaging 3,4,[14][15][16] , textiles [17][18][19][20] , biosensing and bioelectronics 21,22 , fire retardancy 23 , wound dressing and cell delivery [24][25][26] , among others 3 . Despite its excellent mechanical properties, materials derived from nanocellulose and, in particular, TEMPO-oxidized nanocellulose, have several drawbacks inherent to its nature. For instance, these materials are mostly hydrophilic owing to the high concentration of hydroxyl and carboxylate groups; this causes mechanical instability of the formed materials under wet/humid conditions, and exhibit rather low aspect ratios compared to dissolved polymers. The limited aspect ratio makes it difficult to create oriented structures of cellulose nanofibrils by drawing 27,28 . Many attempts to overcome hydrophilicity challenges have been made through appr...

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Fully bio-based zwitterionic membranes with superior antifouling and antibacterial properties prepared via surface-initiated free-radical polymerization of poly(cysteine methacrylate)

Abstract: This article proposes a strategy to prepare membranes that combine the network characteristics of micro/nanocellulose with grafted zwitterionic PCysMA to develop fully bio-based membranes with antifouling properties.

Cited by 69 publications

References 31 publications

Zwitterionic Acetylated Cellulose Nanofibrils

Zwitterionic Acetylated Cellulose Nanofibrils

Plasma surface-modification of cellulose nanocrystals: a green alternative towards mechanical reinforcement of ABS

Coaxial Spinning of All-Cellulose Systems for Enhanced Toughness: Filaments of Oxidized Nanofibrils Sheathed in Cellulose II Regenerated from a Protic Ionic Liquid

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