Regulation of structure, rheological and surface properties of chitin nanocrystal dispersions

Chitin Nanofibrils to Stabilize Long-Life Pickering Foams and Their Application for Lightweight Porous Materials

“…Yet all foams stabilized with either T20 alone or T20−CNFs mixtures exhibited shear thinning behavior, which has been also observed in aqueous dispersion of chitin nanocrystals 49 and other foams stabilized by surfactants or proteins with or without polysaccharide additives. 38,50,51 The shear thinning behavior has played an important role for foams to be processed and applied in food or cosmetics field, as well as in oil recovery.…”

“…The dependence of apparent viscosity on shear rate is shown in Figure . Yet all foams stabilized with either T20 alone or T20–CNFs mixtures exhibited shear thinning behavior, which has been also observed in aqueous dispersion of chitin nanocrystals and other foams stabilized by surfactants or proteins with or without polysaccharide additives. ,, The shear thinning behavior has played an important role for foams to be processed and applied in food or cosmetics field, as well as in oil recovery . At the same time, with the increase of CNFs concentration, the apparent viscosity of the foam increased prominently, especially at low shear rate, indicating enhanced stability of the foam against drainage.…”

Nanochitin: Chemistry, Structure, Assembly, and Applications

“…Considering the two ideal configurations in the assembly of ChNC, repulsive energy barriers are much higher in the case of parallel orientation compared to those in cross-orientation at similar environmental conditions (Figure b). This is because orientation plays a significant role in defining the net energy barrier as a consequence of the interactions between ChNCs. , In practice, ChNCs hardly arrange in suspension under the ideal configurations, parallel or cross orientations, and the actual net potential energy takes a value in between. Changing the salinity of the surrounding aqueous environment for ChNCs in a parallel configuration significantly affects their assembly (Figure b).…”

“…This is because orientation plays a significant role in defining the net energy barrier as a consequence of the interactions between ChNCs. 370,371 In practice, ChNCs hardly arrange in suspension under the ideal configurations, parallel or cross orientations, and the actual net potential energy takes a value in between. Changing the salinity of the surrounding aqueous environment for ChNCs in a parallel configuration significantly affects their assembly (Figure 22b).…”

Biofunctionality assessment of α-lactalbumin nanotubes

“…Both gels showed clockwise hysteresis loops (Fig. 6), indicating time dependence of the shear-thinning (thixotropic flow), which could be quantified by the hysteresis loop area (Torlopov, Martakov, Mikhaylov, Tsvetkov, & Krivoshapkin, 2017). Thixotropy was significantly (p < 0.05) greater in Mn3 vs Mn2 sample (Table 4).…”