Dispersion of multiwalled carbon nanotubes in water by lignin

Lignin-assisted double acoustic irradiation for concentrated aqueous dispersions of carbon nanotubes

“…This indicates that there is a minimum energy required to maximally disperse a given amount of CNTs in water, which is consistent with previous work reporting the effect of sonication conditions on the dispersion of CNTs in various solutions. 19,33 Noteworthy, the value of this minimum sonication energy is higher in the case of AL (i.e. $150 kJ) than for SDS and CTAB (i.e.…”

“…18 Due to its amphiphilic nature and the possibility of p-p interactions with graphitic structures, opportunities exist to use lignin as a renewable dispersing agent for the preparation of aqueous solutions of CNTs. While lignin was recently found to promote the debundling of CNTs in water, 19,20 no comparative assessment of the dispersion quality achieved using lignin and other typical petroleum-based surfactants under identical experimental conditions has been reported to date.…”

Organosolv lignin as natural grafting additive to improve the water resistance of films using cellulose nanocrystals

“…The material applications are subdivided into different industrial sectors such as phenolic resins [18,19], epoxies [20], adhesives [21,22], polyolefins and miscellaneous [19]. More recent work has reported that lignins have novel potential applications such as a dispersing agent of carbon nanotubes [23], binding agent for the removal of contaminants from contaminated water [1], antibacterial agent, flame retardant, antioxidant [24], hydrophobic agent [25], plasticization agent [26], and synthon-production agent [27]. Lignin is generally incorporated into a polymeric matrix or with nanostructured particles by mixing [28], by grafting [1,29] or after electron-beam irradiation [25] to highlight lignin-based materials with new applications (mechanical, UV-absorbent, surface water resistance, antioxidant, and others).…”

Oak barks as raw materials for the extraction of polyphenols for the chemical and pharmaceutical sectors: A regional case study

“…However, most often, bark is burned to meet energy needs in the wood processing industries. These activities have a relatively low added value (Rochez et al, 2013;Simon et al, 2014). The bark that protects the tree against external aggression is known to contain many chemicals whose extraction could create new business opportunities.…”