Exploiting poly(ionic liquids) and nanocellulose for the development of bio-based anion-exchange membranes

Vilela, Carla; Sousa, Nuno; Pinto, Ricardo J.B.; Silvestre, Armando J. D.; Figueiredo, Filipe M.; Freire, Carmen S.R.

doi:10.1016/j.biombioe.2017.03.016

Cited by 43 publications

(46 citation statements)

References 44 publications

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“…2θ 14.5° and 16.6° decreased relatively to the (110) crystallographic plane especially in the case of P(bisMEP)/BC_2 with 50 wt % of P(bisMEP), which might be an indication of higher disorder in the inter-sheet spacing with the addition of the amorphous polymer [37]. An analogous behavior was reported for nanocomposite membranes of a poly(ionic liquid) with BC [24]. Figure 4.…”

Section: Structural and Morphological Characterizationsupporting

confidence: 49%

“…2θ 14.5 • and 16.6 • decreased relatively to the (110) crystallographic plane especially in the case of P(bisMEP)/BC_2 with 50 wt % of P(bisMEP), which might be an indication of higher disorder in the inter-sheet spacing with the addition of the amorphous polymer [37]. An analogous behavior was reported for nanocomposite membranes of a poly(ionic liquid) with BC [24]. The solid-state 13 C CP/MAS NMR spectroscopy also validated the composition of the nanocomposites through the presence of the representative resonances of both P(bisMEP) and BC, as depicted in Figure 3.…”

Section: Structural and Morphological Characterizationsupporting

confidence: 49%

“…The difference, although statistically significant with respect to the series of membranes prepared in this work, is within the natural dispersion of the water-uptake determined in previous works for BC. For example, and restricting to our own results, we have reported values of 100% [20,21] or even 165% [24]. Furthermore, both nanocomposites exhibit water-uptake values higher than those typically found for the commercial Nafion ® ionomer (54%) [46], but lower than the corresponding values obtained for the cross-linked PMOEP/BC membranes prepared in our previous study [21].…”

Section: Water-uptake and Ion Exchange Capacitymentioning

confidence: 74%

“…The P(bisMEP)/BC nanocomposite membranes were prepared following an established procedure based on the in-situ free radical polymerization of a monomer inside the BC three-dimensional porous network [24]. In brief, never-dried BC membranes with ca.…”

Section: Preparation Of P(bismep)/bc Nanocomposite Membranesmentioning

confidence: 99%

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Poly(bis[2-(methacryloyloxy)ethyl] phosphate)/Bacterial Cellulose Nanocomposites: Preparation, Characterization and Application as Polymer Electrolyte Membranes

et al. 2018

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Recent studies have demonstrated the potential of bacterial cellulose (BC) as a substrate for the design of bio-based ion exchange membranes with an excellent combination of conductive and mechanical properties for application in devices entailing functional ion conducting elements. In this context, the present study aims at fabricating polyelectrolyte nanocomposite membranes based on poly(bis[2-(methacryloyloxy)ethyl] phosphate) [P(bisMEP)] and BC via the in-situ free radical polymerization of bis[2-(methacryloyloxy)ethyl] phosphate (bisMEP) inside the BC three-dimensional network under eco-friendly reaction conditions. The resulting polyelectrolyte nanocomposites exhibit thermal stability up to 200 • C, good mechanical performance (Young's modulus > 2 GPa), water-uptake ability (79-155%) and ion exchange capacity ([H + ] = 1.1-3.0 mmol g −1 ). Furthermore, a maximum protonic conductivity of ca. 0.03 S cm −1 was observed for the membrane with P(bisMEP)/BC of 1:1 in weight, at 80 • C and 98% relative humidity. The use of a bifunctional monomer that obviates the need of using a cross-linker to retain the polyelectrolyte inside the BC network is the main contribution of this study, thus opening alternative routes for the development of bio-based polyelectrolyte membranes for application in e.g., fuel cells and other devices based on proton separators.

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Section: Structural and Morphological Characterizationsupporting

confidence: 49%

Section: Structural and Morphological Characterizationsupporting

confidence: 49%

Section: Water-uptake and Ion Exchange Capacitymentioning

confidence: 74%

Section: Preparation Of P(bismep)/bc Nanocomposite Membranesmentioning

confidence: 99%

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Poly(bis[2-(methacryloyloxy)ethyl] phosphate)/Bacterial Cellulose Nanocomposites: Preparation, Characterization and Application as Polymer Electrolyte Membranes

et al. 2018

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“…Nanocellulose substrates, namely cellulose nanofibrils (CNF), cellulose nanocrystals (CNC), and bacterial nanocellulose (BC), are considered unique building blocks for the design of sustainable functional nanomaterials for a multitude of applications, including coatings, functional papers, controlled release systems, biodegradable plastics, biomedical materials, and (nano)composites [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Exploiting poly(ɛ‐caprolactone) and cellulose nanofibrils modified with latex nanoparticles for the development of biodegradable nanocomposites

et al. 2018

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This study reports the development of nanocomposites based on poly(ɛ‐caprolactone) (PCL) and cellulose nanofibrils (CNF) modified with cationic latex nanoparticles. The physical adsorption of these water‐based latexes on the surface of CNF was studied as an environment‐friendly strategy to enhance the compatibility of CNF with a hydrophobic polymeric matrix. The latexes are composed of amphiphilic block copolymers based on cationic poly(N,N‐dimethylaminoethyl methacrylate‐co‐methacrylic acid) as the hydrophilic block, and either poly(methyl methacrylate) or poly(n‐butyl methacrylate) as the hydrophobic block. The simple and practical melt‐mixing of PCL‐ and latex‐modified CNF yielded white homogeneous nanocomposites with complete embedment of the nanofibrils in the thermoplastic matrix. All nanocomposites are semicrystalline materials with good mechanical properties (Young's modulus = 43.6–52.3 MPa) and thermal stability up to 335–340°C. Degradation tests clearly showed that the nanocomposites slowly degrade in the presence of lipase‐type enzyme. These PCL/CNF‐latex nanocomposite materials show great promise as future environmentally friendly packaging materials. POLYM. COMPOS., 40:1342–1353, 2019. © 2018 Society of Plastics Engineers

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Fabrication of cellulose acetate‐based radiation grafted anion exchange membranes for fuel cell application

Samaniego

Arabelo

Sarker

et al. 2020

J of Applied Polymer Sci

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Novel cellulose acetate-based anion exchange membranes (CA-AEM) are successfully synthesized via gamma radiation grafting as a possible renewable alternative to commercial AEMs. Using CA film precursors with degree of acetylation of 2.5, the synthesized AEM shows a high ion exchange capacity of 2.15 mmol g −1 obtained at high degree of grafting of 45%. It was determined using thermogravimetric analysis that the radiation-grafted CA-AEM has stable amine functional groups under oxygen environment within the normal operating temperature range of alkaline fuel cells. The CA-AEM also exhibits appreciable performance over a range of temperatures, with a highest ionic conductivity of up to 0.163 S cm −1 depending on the synthesis parameters. Results revealed that membranes prepared using gamma radiation dose of 31 kGy and above are susceptible to mechanical and dimensional instability due to increased water uptake and degree of swelling. Further study should consider the balance between grafting parameters and the desired hydrophysical properties.

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Exploiting poly(ionic liquids) and nanocellulose for the development of bio-based anion-exchange membranes

Cited by 43 publications

References 44 publications

Poly(bis[2-(methacryloyloxy)ethyl] phosphate)/Bacterial Cellulose Nanocomposites: Preparation, Characterization and Application as Polymer Electrolyte Membranes

Poly(bis[2-(methacryloyloxy)ethyl] phosphate)/Bacterial Cellulose Nanocomposites: Preparation, Characterization and Application as Polymer Electrolyte Membranes

Exploiting poly(ɛ‐caprolactone) and cellulose nanofibrils modified with latex nanoparticles for the development of biodegradable nanocomposites

Fabrication of cellulose acetate‐based radiation grafted anion exchange membranes for fuel cell application

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