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Preparation and caracterization of celullose nanofibers of orange peel

Grant number: 17/19530-0
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): November 01, 2017
Effective date (End): October 31, 2018
Field of knowledge:Engineering - Chemical Engineering - Chemical Technology
Principal Investigator:Paulo Henrique Fernandes Pereira
Grantee:Luana Lima Fernandes
Host Institution: Faculdade de Engenharia (FEG). Universidade Estadual Paulista (UNESP). Campus de Guaratinguetá. Guaratinguetá , SP, Brazil


The growing concern about environmental issues and the increased number of searches for sustainable materials makes natural fibers gain more space in research and development of new materials as raw materials to replace petroleum-based polymers. Considering that Brazil produces, annually, tons of residues that comes from the production of orange juice, this project has the objective of using the bagasse of the orange, followed by chemical treatments to obtain the bleached pulp and, later, the preparation of cellulose nanofibers. The pear orange bagasse will be subjected to the treatment of soluble residues in ethyl alcohol (SRA), followed by bleaching in sodium hydroxide solution (4% w/v) and hydrogen peroxide (30% v/v), followed of a treatment with KOH (5% w/v). After these treatments, from the bleached cellulose, nanocelluloses will be prepared through acid hydrolysis using sulfuric acid in concentrations of 64% and 50% and in different reaction times of 1 and 2h. The fiber in natura, the fiber after removal of solid waste in alcohol, after the first and second bleaching will be characterized by: X-Ray Diffraction (XRD), Fourier Transform Infrared (FTIR), Thermogravimetry (TG/DTG) and Microscopy Scanning Electronics (SEM). The prepared nanofibers will be characterized by the technique of zeta potential analysis and particle size analysis and also by XRD, TG/DTG and FTIR. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PEREIRA, PAULO HENRIQUE F.; SANTOS, LIZIANE B. UBIRAJARA; MONTICELI, FRANCISCO; CIOFFI, MARIA ODILA H.. Influence of acetosolv and eco-friendly bleaching treatment of orange bagasse in biocomposite properties: a mechanical and thermal approach. Cellulose, v. 30, n. 5, p. 15-pg., . (17/19530-0, 16/16168-6)
FERNANDES PEREIRA, PAULO HENRIQUE; FERNANDES, LUANA LIMA; UBIRAJARA SANTOS, LIZIANE BEATRIZ; ORNAGHI JR, HEITOR L.; HILARIO CIOFFI, MARIA ODILA. Different Sequential Chemical Treatments Used to Obtain Bleached Cellulose from Orange Bagasse. JOURNAL OF NATURAL FIBERS, v. N/A, p. 13-pg., . (17/19530-0, 15/10386-9, 16/16168-6)

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