| Title |
Properties and environmental sustainability of fungal chitin nanofibril reinforced cellulose acetate films and nanofiber mats by solution blow spinning |
| ID_Doc |
10566 |
| Authors |
Kramar, A; González-Benito, J; Nikolic, N; Larrañaga, A; Lizundia, E |
| Title |
Properties and environmental sustainability of fungal chitin nanofibril reinforced cellulose acetate films and nanofiber mats by solution blow spinning |
| Year |
2024 |
| Published |
|
| DOI |
10.1016/j.ijbiomac.2024.132046 |
| Abstract |
Materials from biological origin composed by renewable carbon facilitate the transition from linear carbon-intensive economy to a sustainable circular economy. Accordingly, we use solution blow spinning to develop fully biobased cellulose acetate films and nanofiber mats reinforced with fungal chitin nanofibrils (ChNFs), an emerging bio-colloid with lower carbon footprint compared to crustacean-derived nanochitin. This study incorporates fungal ChNFs into spinning processes for the first time. ChNF addition reduces film surface roughness, modifies film water affinity, and tailors the nanofiber diameter of the mats. The covalently bonded beta-D-glucans of ChNFs act as a binder to improve the interfacial properties and consequently load transference to enhance the mechanical properties. Accordingly, the Young's modulus of the films increases from 200 +/- 18 MPa to 359 +/- 99 MPa with 1.5 wt% ChNFs, while the elongation at break increases by similar to 45 %. Life cycle assessment (LCA) is applied to quantify the environmental impacts of solution blow spinning for the first time, providing global warming potential values of 69.7-347.4 kg.CO2-equiv.kg(-1). Additionally, this work highlights the suitability of ChNFs as reinforcing fillers during spinning and proves the reinforcing effect of mushroom-derived chitin in bio-based films, opening alternatives for sustainable materials development beyond nanocelluloses in the near future. |
| Author Keywords |
Chitin nanofibrils; Solution blow spinning; Life cycle assessment |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001243331100001 |
| WoS Category |
Biochemistry & Molecular Biology; Chemistry, Applied; Polymer Science |
| Research Area |
Biochemistry & Molecular Biology; Chemistry; Polymer Science |
| PDF |
https://doi.org/10.1016/j.ijbiomac.2024.132046
|