Modification of regenerated cellulose membrane based on thiol dendrimer

Physicochemical Characterization of a Cellulosic Film Modified with Two Room-Temperature Ionic Liquids

“…. [34,35]); Figure 4 shows the normal tensile stress (F/S) versus strain (∆L/Lo) curves obtained for both RC/IL films and the RC support, where significant differences in the elastic characteristics of the films can be observed. Although the three samples exhibited a rather similar value for the elastic limit (e.l.~0.03), the curves were clearly different: the strain-stress curve shown by the RC support was similar to that reported by regenerated fibers (viscose or cellulose acetate) and different RC membranes [48,49], with a first part associated with an elastic behavior plus a second and long plastic region, while the RC/IL films showed a higher slope and shorted elongation at break.…”

“…Another polymeric but biocompatible material widely used for membranes or thin films manufacturing is regenerated cellulose (RC), and different cellulose-ILs hybrid materials for drug delivery, biosensing or tissue engineering applications have already been reported [16,31]. On the other hand, the modification of regenerated cellulose (RC) films with lipids or ILs layers and/or the incorporation of different nano-structures (nanoparticles, dendrimers or different kinds of quantum dots) by simple dip coating in aqueous solutions of the modifying agents (without any chemical reaction) has also been reported, with the simplicity of this modification process being associated with the high hydrophilic character and swelling degree of the RC-support [32][33][34][35][36]. In this context, it should be indicated that the high transparency of cellulosic films is a characteristic of significant interest nowadays due to its importance for applications in optical devices [37,38], but their biocompatibility is another factor of great significance [16].…”

Cellulose Nanostructure-Based Membranes: Structure, Synthesis, and Applications

“…The RCM extracted from recycled newspapers is an excellent alternative to paper recycling. This was demonstrated by comparing the changes in electrical, mechanical, diffusive parameters of a highly swollen RCM modi ed with a dendritic molecule (thiol DAB dendrimer of generation 3) to the original regenerated cellulose (RC/4) membrane (Vázquez et al 2015).…”

Tetracycline hydrochloride loaded regenerated cellulose composite membranes with controlled release and efficient antibacterial performance

“…14 Therefore, regenerated cellulose (RC) was fabricated with a ne brous network structure to load therapeutic drugs, which represent excellent pharmaceutical candidates. 15 Moreover, the release of the therapeutic agent can increase the efficiency by being loaded into the cellulose matrices, including antibacterial agents, [16][17][18] anti-cancer drugs, [19][20][21] anti-inammatory drugs, 22 antibiotics, 23,24 proteins 25 and DNA. 26,27 In this study, TCH loaded RC composite membranes were fabricated and their drug release behavior, antibacterial activity and cytotoxicity were evaluated.…”