Электронный каталог

Статья

Vorobiov, V.K.
3D Printing of Biocompatible Nanocellulose-Reinforced Hydrogels via Polymerizable Ternary Deep Eutectic Solvent Assistance / V.K.Vorobiov, M.P.Sokolova, Yu.E.Gorshkova, [a.o.]. – Text : electronic // Chinese Journal of Polymer Science. – 2025. – Vol. 43, No. 12. – P. 2285-2298. – URL: https://doi.org/10.1007/s10118-025-3452-1. – Bibliogr.: 83.

Two- and three-component deep eutectic solvents (DES) based on acrylic acid (AA), acrylamide (AAm), and choline chloride (ChCl) were used to disintegrate bacterial cellulose into cellulose nanofibers (CNF). As a result, polymerizable precursors suitable for 3D printing with CNF as a rheology modifier and reinforcer with formation of interpenetrating double polymer network were obtained after UV curing. Composite hydrogels were formed by replacing ChCl with water. It was found that the introduction of amide groups into the acrylate polymer matrix resulted in an increase in compressive strength. The layered architecture of the 3D printed products provides greater mechanical strength compared to molded products. The structure of the composites was investigated using wide-angle X-ray scattering (WAXS), small-angle X-ray scattering (SAXS), atomic force microscopy (AFM) and polarized light microscopy. These studies suggest that the enhanced mechanical properties of the 3D printed hydrogels are associated with swelling and branching of CNF in the DES, as well as alignment of the filler during extrusion. For comparative analysis, composite hydrogels were also prepared using aqueous solutions of AA and AA/AAm with dispersed CNF. However, the 3D printing process was hampered in this case due to cellulose agglomeration. Mechanical testing revealed the formation of premature microcracks in these samples, which were not observed in composites produced using DES. Cytotoxicity of the composite hydrogels was also tested. The results provide valuable insights into the production of strong (up to 3.4 MPa) homogeneous composite hydrogels using 3D printing with nanocellulose filler.



ОИЯИ = ОИЯИ (JINR)2025
Спец.(статьи,препринты) = С 33 а - Нанофизика. Нанотехнология$
Спец.(статьи,препринты) = С 332.8 - Синхротронное излучение. Лазеры на свободных электронах. Получение и использование рентгеновских лучей
Бюллетени = 7/026