Title:
Bionanocomposites of Chitosan Reinforced with Nanocellulose from Giant Reed Residues: Development and Physical Characterization
Author(s):
Pires, J.R.A., Souza, V.G.L., Kougkolos, G., Godinho, M.H., Coelhoso, I.M., Fernando, A.L.
Document(s):
Paper
Abstract:
Bioplastics are considered a viable alternative and an option to reduce the high levels of pollution associated with synthetic plastics. However, some inherent physical failures need to be surpassed. One of the strategies adopted to improve the flaws presented by biopolymers is their reinforcement with nanoparticles. Incorporating crystalline nanocellulose (CNCs) as reinforcement in bioplastics perfectly fits in the scope of biodegradability and lignocellulosic residues valorization. Thus, the aim of this work was to achieve a biodegradable bionanocomposite made from chitosan, a bio-based polymeric matrix, reinforced with CNC extracted from giant reed (Arundo donax L.) lignocellulosic residues. The nanocellulose from giant reed (2.5% and 5% w/w in chitosan) was added and an exfoliation process was performed. Biofilms with commercial nanocellulose (2.5% and 5% w/w in chitosan) and films without nanocellulose were also produced for comparison. The novel chitosan/nanocellulose bionanocomposites were produced with success by casting method and characterized in terms of their physical properties. The results indicate that the incorporation of nanocrystalline cellulose improved the mechanical properties as intended. Additionally, bionanocomposites are slightly more saturated and showed greater ultraviolet light block than the pristine chitosan films. Hence, bionanocomposites showed greater potential than pristine chitosan biofilm.
Keywords:
bioplastics, lignocellulosic sources, biomass feedstock
Topic:
Biomass Technologies and Conversion to Intermediate Bioenergy Carriers and Products of the Bioeconomy
Subtopic:
Bio-based chemicals and materials
Event:
28th European Biomass Conference and Exhibition
Session:
3CV.1.25
Pages:
672 - 678
ISBN:
978-88-89407-20-2
Paper DOI:
10.5071/28thEUBCE2020-3CV.1.25
Price:
FREE
