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Cassava starch‐based nanocomposites reinforced with cellulose nanofibers extracted from sisal
Author(s) -
Santana Jamille Santos,
Rosário Jamile Marques,
Pola Cícero Cardoso,
Otoni Caio Gomide,
Fátima FerreiraSoares Nilda,
Camilloto Geany Peruch,
Cruz Renato Souza
Publication year - 2017
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.44637
Subject(s) - nanofiber , cellulose , materials science , nanocellulose , ultimate tensile strength , nanocomposite , composite material , starch , thermal stability , chemical engineering , chemistry , organic chemistry , engineering
Cellulose nanofibers were extracted from sisal and incorporated at different concentrations (0–5%) into cassava starch to produce nanocomposites. Films' morphology, thickness, transparency, swelling degree in water, water vapor permeability (WVP) as well as thermal and mechanical properties were studied. Cellulose nanofiber addition affected neither thickness (56.637 ± 2.939 µm) nor transparency (2.97 ± 1.07 mm −1 ). WVP was reduced until a cellulose nanofiber content of 3.44%. Tensile force was increased up to a nanocellulose concentration of 3.25%. Elongation was decreased linearly upon cellulose nanofiber addition. Among all films, the greatest Young's modulus was 2.2 GPa. Cellulose nanofibers were found to reduce the onset temperature of thermal degradation, although melting temperature and enthalpy were higher for the nanocomposites. Because cellulose nanofibers were able to improve key properties of the films, the results obtained here can pave the route for the development and large‐scale production of novel biodegradable packaging materials. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44637.