Controllable exfoliation of natural silk fibers into nanofibrils by protein denaturant deep eutectic solvent: nanofibrous strategy for multifunctional membranes

Abstract

A protein denaturant deep eutectic solvent to exfoliate natural silk fibers into nanofibrils for multifunctional membranes with enhanced properties.

Polymer Science and Engineering Using Deep Eutectic Solvents

“…Some DES can transform a polymer’s structure by disrupting or rearranging its chemical and/or physical networks. Within this context, acidic DES have been used for protein denaturation [107,122]. Tan and the coauthors published the use of urea:guanidine hydrochloride DES as protein denaturant to transform silk fibers into nanofibers [122].…”

“…Within this context, acidic DES have been used for protein denaturation [107,122]. Tan and the coauthors published the use of urea:guanidine hydrochloride DES as protein denaturant to transform silk fibers into nanofibers [122]. The mentioned study used DES for the combined transformation of two different biopolymers, using protein denaturation with DES as a strategy for the modification of a more complex biopolymer matrix.…”

Bioinspired synthesis of fiber-shaped silk fibroin-ferric oxide nanohybrid for superior elimination of antimonite

“…First, Bombyx mori cocoons were degummed twice in a boiling solution of 0.5 wt% Na 2 CO 3 , and the obtained silk fibroin was washed by distilled water for several times and dried at 50 °C for 24 h. Then, the silk fibroin was hydrolyzed and degraded by a mixture of urea and guanidine hydrochloride according to the mothed modified from previous study [ 23 ], then followed washing and filtration by distilled water. The exfoliated tofukasu-like materials were then dispersed in water with a weight ratio of 1:250 under vigorous stirring.…”

“…Herein, we firstly used a modified gentle enzymatical degradation method consisting of urea and guanidine hydrochloride to extract the silk fibroin [ 23 ]. The nanocomposite was then designed by in situ synthesis of ferric oxides anchored to silk fibroin.…”

Soft Electronics Based on Liquid Conductors

“…[65] Ionic interests in green synthesis owing to their unique physicochemical properties like low volatility, electrochemical stability, and high ionic conductivity. [76][77][78][79][80][81] Deep eutectic solvents are considered as a subclass of ionic liquids, [70,82,83] while they are different in essence. Ionic liquids are composed of large-volume ions confined by each other through electrostatic interaction.…”