Ascorbic acid-loaded polyvinyl alcohol/cellulose nanofibril hydrogels as precursors for 3D printed materials

Hossein Bani Asadi, Zahraalsadat Madani, Rubina Ajdary, Orlando Rojas Gaona, Jukka Seppälä*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

1 Sitaatiot (Scopus)
13 Lataukset (Pure)

Abstrakti

We proposed a simple method to process hydrogels containing polyvinyl alcohol and cellulose nanofibrils (PVA/CNF) to prepare volumetric architectures by direct ink writing (DIW). The presence of CNF in the aqueous PVA suspensions conferred rheology profiles that were suitable for extrusion and solidification in pre-designed shapes. The viscoelastic behavior of the hybrid inks enabled precise control on processability and shape retention, for instance, as demonstrated in multilayered lattice structures of high fidelity. After lyophilization, the obtained 3D-printed hydrogels presented a very high porosity, with open and interconnected pores, allowing a high-water uptake capacity (up to 1600%). The mechanical strength of the composite 3D-printed materials matched those of soft tissues, opening opportunities for skin applications. As such, drug-loaded samples revealed a controlled and efficient delivery of an antioxidant (ascorbic acid) in PBS buffer media at 23 °C (~80% for 8 h). Altogether, PVA/CNF hydrogels were introduced as suitable precursors of 3D-lattice geometries with excellent physical and mechanical characteristics.
AlkuperäiskieliEnglanti
Artikkeli112424
Sivumäärä12
JulkaisuMaterials Science and Engineering C
Vuosikerta130
Varhainen verkossa julkaisun päivämäärä11 syyskuuta 2021
DOI - pysyväislinkit
TilaJulkaistu - marraskuuta 2021
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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