Properties of modified carboxymethyl cellulose prepared by lyophilisation

Abstract

This study deals with the change of selected properties of samples of modified carboxymethyl cellulose after freeze drying. The investigated properties were changes in thickness, permeability, water sorption, thermal area resistance and thermal absorbing capacity. The prepared materials were evaluated by scanning electron microscopy. The product of presented technology has large internal surface, high wettability and biodegradability. It is nontoxic with high potential in biological applications.

Impact of filler and gelling catalyst/agent on properties of flexible polyurethane foam

“…Prior reported research shows that carboxymethyl cellulose exhibits superior sorption characteristics when soaked in water, salt solution, or pH‐adjusted water, as compared to 100% standardized cotton. The mass growth values of the CMC samples were about eight times higher than those of the conventional cotton samples 26 . The newly modified foam's with enhanced wicking property is because of the nature of the filled substituent and by the influence of number of free OH groups.…”

“…The mass growth values of the CMC samples were about eight times higher than those of the conventional cotton samples. 26 The newly modified foam's with enhanced wicking property is because of the nature of the filled substituent and by the influence of number of free OH groups. Wicking samples of unfilled standard flexible polyurethane foam with thicknesses of 6 mm, 8 mm, and 10 mm are shown visually in Figure 7.…”

Nanocellulose‐Carboxymethylcellulose Electrolyte for Stable, High‐Rate Zinc‐Ion Batteries

“…The Zn 4 SO 4 (OH) 6 ·xH 2 O byproduct is electrochemically inert and will prevent further Zn deposition. [ 53 ] However, thanks to the strong bonding between CMC and water molecules [ 40 ] within the cellulose‐5 wt.% CMC electrolyte, there is reduced formation of Zn 4 SO 4 (OH) 6 ·xH 2 O (Figure 3C), allowing Zn to deposit over the entire Zn foil surface throughout cycling. All combined, these advantages of the cellulose‐5 wt.% CMC electrolyte help suppress the dendritic, perpendicular growth of Zn, enabling stable and reversible Zn plating/stripping.…”

“…In this approach, CMC polymer chains are distributed within the relatively ridged cellulose network (Figure 1B) to form a dense, quasi-solid-state electrolyte that also functions as the battery separator. CMC, an inexpensive and commercially available cellulose derivative, features numerous carboxyl groups that form stronger bonding interactions with water molecules compared to cellulose alone, [40,41] which can help limit the free water content when used in a membrane. The increased bound water content helps promote Zn ion conductivity, while simultaneously preventing excess free water molecules from engaging in parasitic side reactions.…”

Biobased polymer resources and essential oils: a green combination for antibacterial applications

“…Na-CMC is also a type of anionic polysaccharide derived from cellulose, which is not only described as an interesting substrate for edible films but also widely employed in emulsifiers, adhesives, thickeners, and protective colloids in the food and agricultural industries. 158 For instance, Na-CMC was combined with pectin, okara soluble dietary fibers and thyme essential oil (TEO) to successfully synthesize films from waste resources. As expected, the TEO-based films exhibited interesting antibacterial activities against Gram-positive bacteria ( S. aureus , ATCC 25923) and Gram-negative bacteria ( E. coli , ATCC 25922) 159 together with an increase in the antioxidant activities of the films.…”