The antimicrobial reagent role on the degradation of model cellulose film

Structures of Novel Antimicrobial Agents for Textiles - A Review

“…This enables the formation of a nanocomposite polymer network with an organicinorganic hybrid structure [21][22][23]. Colloidal solutions (sols) have been prepared for this purpose, consisting of mixtures of tetraalkoxysilane (Si(OR) 4 ) and QASs with different structures [24] or organic-inorganic hybrids, including alkyltrialkoxysilanes (R x -Si(OR) 3 ), with incorporated quaternary ammonium groups (Figure 3) [25][26][27][28][29][30][31]. Alkoxysilanes are solgel precursors with alkoxy groups that can hydrolyze in the presence of a catalyst to form silanol (-SiOH) groups, which further condense among each other or with the hydroxyl (-OH) groups of the fibers.…”

“…The lack of antimicrobial activity of durable QAS after repeated laundering is caused by the deactivation of its quaternary ammonium group by complex formation between the positively charged QAS and the negatively charged anionic detergent. [25,30], perfluorooctylated quaternary ammonium silane coupling agent (B) [28]. Figure 5 Substituted polycationic polysiloxane with pendant QAS (A) [34] and imidazolium salt (B) [35] groups.…”

Antimicrobial Reagents as Functional Finishing for Textiles Intended for Biomedical Applications. I. Synthetic Organic Compounds

“…Different approaches were used to obtain antimicrobial textiles containing QASs, but the sol-gel technology has proven to be most appropriate because it enables the formation of a nanocomposite polymer network with an organic-inorganic hybrid structure [34][35][36]. Colloidal solutions (sols) have been prepared for this purpose, consisting of mixtures of tetraalkoxysilane (Si(OR) 4 ) and QASs with different structures [37] or organic-inorganic hybrids, including alkyl-trialkoxysilanes (Rx-Si(OR) 3 ), with incorporated quaternary ammonium groups [30,[38][39][40][41][42][43], as presented in Figure 4.…”

Antimicrobial Biomimetics

“…Four deposition steps produced a tetralayered film with sucessive layers: (polycation/ polyanion/ ponericin G1/ polyanion) n , where n represents the number of deposited tetralayer repeats (Shukla et al, 2010). Another approach to produce antimicrobial films and coatings is the spin-coating technique (Pereira et al, 2008;Jausovec et al, 2008), which is based on the solubilization of polymer and antimicrobial compound in a volatile solvent, e.g. chloroform, followed by spin-coating of the solution on the surface of a glass slide or silicon wafer.…”