One-pot synthesis of biofoams from castor oil and cellulose microfibers for energy absorption impact materials
authors Sousa, AF; Matos, M; Pinto, RJB; Freire, CSR; Silvestre, AJD
nationality International
journal CELLULOSE
author keywords Foams; Polyurethanes; Castor oil; Microcrystalline cellulose; Renewable resources; One-pot synthesis
keywords RENEWABLE RAW-MATERIALS; POLYURETHANE FOAMS; NATURAL OILS; POLYMERS; MICROSTRUCTURE; CHEMICALS; INDUSTRY; POLYOL; FATS
abstract The use of renewable feedstocks in foam technology has created a worldwide demand for more sustainable materials. Castor oil is a vegetable oil, composed mainly of triricinoglycerol, a natural polyol, suitable for polyurethane foam production. In this study, castor oil and variable amounts of microcrystalline cellulose (MCC) fibers were used in a straightforward one-pot synthesis approach for the preparation of novel biofoams. The ensuing biofoams were characterized by several techniques, including attenuated total reflectance Fourier transform infrared spectroscopy, scanning electron microscopy and thermogravimetric analysis, and their mechanical performance was evaluated by compression mechanical testing and by dynamic mechanical thermal analysis. They were (semi-) flexible, with a cell-like morphology and reinforced toughness due to the use of MCC. They had a Young's modulus varying between 0.188 and 1.06 MPa depending on the amount of MCC used and were thermally stable up to 267 A degrees C. The properties of these novel biofoams enable them to be strong candidates for use as tough, energy-absorbing foams, advantageously prepared using renewable-based resources.
publisher SPRINGER
issn 0969-0239
year published 2014
volume 21
issue 3
beginning page 1723
ending page 1733
digital object identifier (doi) 10.1007/s10570-014-0229-z
web of science category Materials Science, Paper & Wood; Materials Science, Textiles; Polymer Science
subject category Materials Science; Polymer Science
unique article identifier WOS:000336322800057
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journal analysis (jcr 2017):
journal impact factor 3.809
5 year journal impact factor 4.120
category normalized journal impact factor percentile 94.489
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