A biopolymer‐based 3D printable hydrogel for toxic metal adsorption from water

Abstract

Herein, we describe a 3D printable hydrogel that is capable of removing toxic metal pollutants from aqueous solution. To achieve this, shear‐thinning hydrogels were prepared by blending chitosan with diacrylated Pluronic F‐127 which allows for UV curing after printing. Several hydrogel compositions were tested for their ability to absorb common metal pollutants such as lead, copper, cadmium and mercury, as well as for their printability. These hydrogels displayed excellent metal adsorption with some examples capable of up to 95% metal removal within 30 min. We show that 3D printed hydrogel structures that would be difficult to fabricate by conventional manufacturing methods can adsorb metal ions significantly faster than solid objects, owing to their higher accessible surface areas. © 2019 Society of Chemical Industry

Advanced Polymer Designs for Direct‐Ink‐Write 3D Printing

“…For example, a triblock copolymer of pluronic F127 possessing a hydrophobic polypropylene oxide (PPO) core and two hydrophilic polyethylene oxide (PEO) tails forms spherical micelles in aqueous solution. Increasing the concentration of F127 to 21 w/w % affords a viscoelastic hydrogel at 25 °C that is suitable for DIW . Zhao et al.…”

“…Increasing the concentrationo fF 127 to 21 w/w %a ffords av iscoelastic hydrogela t2 58Ct hat is suitable for DIW. [66] Zhao et al systematically evaluated [67] the 3D printability of F127-based hydrogels at different concentrations ( Figure 2b). They reporteda n optimum hydrogel concentrationr ange of 18-36wt% for a telechelicd iacrylate derivative of F127 (F127-DA).…”

3D Printed Materials in Water Treatment Applications

“…The above-mentioned water treatment techniques are used to challenge various environmental concerns, such as heavy metal removal, organic matter (both degradable and non-degradable) removal, oil/water separation, fouling reduction, water splitting (or hydrogen production), methane conversion, and desalination. [14,15,[39][40][41] The environmental applications of various 3D printed materials are shown in Table 1. S1, Supporting Information), b) various 3D printing technologies for various filtration processes, [23][24][25][26] and c) advantages and limitations of all seven 3D printing technologies mentioned in ISO ASTM 52900:2015 standard.…”

Pluronic F-127/Silk Fibroin for Enhanced Mechanical Property and Sustained Release Drug for Tissue Engineering Biomaterial

“…To compensate the poor mechanical and physicochemical properties of PF, high concentrations of PF can be used but may result in undesirable side effects in vivo [ 25 ]. To overcome these problems, different types of polysaccharide and collagen-derived polymers such as hyaluronic acid, alginate, chitosan, gellan gum, and gelatin have been applied with PF to enhance the stability and physicochemical properties of PF through the intramolecular interaction [ 16 , 26 , 27 , 28 , 29 , 30 ]. A facile blending with various types of matrix exhibited a promising application as an injectable hydrogel for drug and cell delivery.…”