3D Printing High-Consistency Enzymatic Nanocellulose Obtained from a Soda-Ethanol-O2 Pine Sawdust Pulp

Bioengineering

MaríaC. Area¹  FernandoE. Felissia¹  NanciV. Ehman¹  MaríaE. Vallejos¹  CamilaM. Imlauer¹  Daniel Filgueira²  Gary Chinga-Carrasco²  Panu Lahtinen³  Heli Kangas³ 

[1] Instituto de Materiales de Misiones (IMAM), Félix de Azara 1552, 3300 Posadas, Misiones, Argentina;RISE PFI, Høgskoleringen 6b, 7491 Trondheim, Norway;VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 VTT, Finland;

关键词: pine sawdust;    soda ethanol pulping;    nanocellulose;    3D printing;    cytotoxicity;   

DOI  :  10.3390/bioengineering6030060

来源: DOAJ

【 摘 要 】

Soda-ethanol pulps, prepared from a forestry residue pine sawdust, were treated according to high-consistency enzymatic fibrillation technology to manufacture nanocellulose. The obtained nanocellulose was characterized and used as ink for three-dimensional (3D) printing of various structures. It was also tested for its moisture sorption capacity and cytotoxicity, as preliminary tests for evaluating its suitability for wound dressing and similar applications. During the high-consistency enzymatic treatment it was found that only the treatment of the O₂-delignified pine pulp resulted in fibrillation into nano-scale. For 3D printing trials, the material needed to be fluidized further. By 3D printing, it was possible to fabricate various structures from the high-consistency enzymatic nanocellulose. However, the water sorption capacity of the structures was lower than previously seen with porous nanocellulose structures, indicating that further optimization of the material is needed. The material was found not to be cytotoxic, thus showing potential as material, e.g., for wound dressings and for printing tissue models.

【 授权许可】

Unknown