Cellulose cross-linking with folic acid at room via diverse-based coupling reagents attaining multifunctional features.

Here, cellulose was cross-linked with folic acid (FA) using tetrafluoroborate (TBTU) and carbodiimide (DIC) as coupling reagents through the pad method at room temperature. The interactions between FA and cellulose were proposed and determined with FTIR, and UV-visible also confirmed with nitrogen content. The newly formed ester peak showed the grafting of FA to the cellulose through esterification followed by cellulose cross-linking.

Amino-functionalized cross-linked cellulosic fabric with antibacterial, UV protection, and coloring effects using folic acid.

The amino-functionalized cellulose with folic acid, via an esterification reaction between carboxylic acid of folic acid and hydroxyl groups of cellulose, can develop multifunctional products with new chemical and physical properties. Folic acid contains two carboxylic groups as well as an amine group that can be used as a coupling agent and provide suitable conditions for coupling hydroxyl-based compounds to cellulose. Also; the multi-functionalized cellulose with folic acid has no effects on the physical and mechanical properties and also has benefits such as antibacterial, UV protection, and wrinkle resistance.

Chitosan-Intercalated Montmorillonite/Poly(vinyl alcohol) Nanofibers as a Platform to Guide Neuronlike Differentiation of Human Dental Pulp Stem Cells.

In this study, we present a novel chitosan-intercalated montmorillonite/poly(vinyl alcohol) (OMMT/PVA) nanofibrous mesh as a microenvironment for guiding differentiation of human dental pulp stem cells (hDPSCs) toward neuronlike cells. The OMMT was prepared through ion exchange reaction between the montmorillonite (MMT) and chitosan. The PVA solutions containing various concentrations of OMMT were electrospun to form 3D OMMT-PVA nanofibrous meshes.