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Extrusion of Nanocellulose‐Reinforced Nanocomposites Using the Dispersed Nano‐Objects Protective Encapsulation (DOPE) Process
Author(s) -
Lemahieu Louis,
Bras Julien,
Tiquet Pascal,
Augier Sylvain,
Dufresne Alain
Publication year - 2011
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201100015
Subject(s) - materials science , extrusion , nanocellulose , whiskers , nanocomposite , composite material , thermoplastic , cellulose , composite number , polymer , plastics extrusion , chemical engineering , engineering
Cross‐linked alginate capsules a few millimeters in diameter have been formed by immersion in a CaCl 2 solution. When adding cellulose whiskers or microfibrillated cellulose to the aqueous alginate solution, nanocomposite capsules containing 40 wt.% cellulosic nanoparticles were obtained. The morphology and compression strength of these capsules were investigated by microscopic observations and crushing tests, respectively. The capsules were extruded with a thermoplastic polymer. Visual inspection of the ensuing films shows a nonhomogeneous dispersion of the capsules that kept their integrity after extrusion. It results in preliminary disappointing mechanical properties of the composite films. However, further investigation is in progress to optimize this simple and ecofriendly process.