Abstract
The biodiversity of the Amazon forest is undoubtedly rich; hence there is considerable variety of plant fibers regarding their morphological, chemical and structural properties. The legal exploration of the Brazilian Amazon is based on sustainable management techniques, but the generation of a relevant amount of plant wastes still cant be avoided. The correct destination of such materials is a challenge that Brazilian companies have to face. In this context, the National Council of Science and Technology (CNPq) promoted the creation of investigation nets on sustainability of Brazilian agribusiness. The Brazilian Net on Lignocellulosic Composites and Nanocomposites was then created, with partnership between several national and international research institutions. Until the moment, the results showed that Amazon plant fibers that are discarded as residues have great potential to nanofiber production. Nanopapers with considerable high mechanical and physical strength, proper opacity and great crystalline index were produced by using a clean and simple mechanical method. Those materials are candidates to several uses such as packaging, substrates transparent conductive films, gas barrier films, solar cells and e-papers.
Highlights
There is a genuine interest and need to decrease societys dependency on petroleum bio-based products
Veneers for saw wood of three certified Amazonian species were selected, namely Cordia goeldiana, Brosimum parinarioides, and Parkia gigantocarpa. Those species are legally used by a Brazilian panel company for tropical plywood production within the terms of sustainable management of the Amazon forest
Cellulose isolation The sawdust was previously submitted to chemical modification through two stages: 1) Alkali treatment with NaOH at 5% in a digester, at 150 ̊C for 30 min; 2) Bleaching with H2O2 at 24% and NaOH at 4% under mechanical stirring at 60 ̊C for 2 h
Summary
There is a genuine interest and need to decrease societys dependency on petroleum bio-based products. One of the goals of this partnership is to investigate the potential of wastes from wood processing for the production of nanopapers. Those species are legally used by a Brazilian panel company for tropical plywood production within the terms of sustainable management of the Amazon forest. Cellulose isolation The sawdust was previously submitted to chemical modification through two stages: 1) Alkali treatment with NaOH at 5% in a digester, at 150 ̊C for 30 min; 2) Bleaching with H2O2 at 24% and NaOH at 4% under mechanical stirring at 60 ̊C for 2 h.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IOP Conference Series: Materials Science and Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
