“Green” composites from recycled cellulose and poly(lactic acid): Physico-mechanical and morphological properties evaluation

“Green”/biobased composites were prepared from poly(lactic acid) (PLA) and recycled cellulose fibers (from newsprint) by extrusion followed by injection molding processing. The physico-mechanical and morphological properties of the composites were investigated as a function of varying amounts of cel...

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Bibliographic Details
Published in:Journal of materials science 2005-08, Vol.40 (16), p.4221-4229
Main Authors: Huda, M. S, Mohanty, A. K, Drzal, L. T, Schut, E, Misra, M
Format: Article
Language:English
Subjects:
Applied sciences
Biodegradability
cellulose
Cellulose fibers
cellulosic fibers
Cellulosic resins
Composites
crystal structure
Differential scanning calorimetry
Dynamic mechanical analysis
Exact sciences and technology
extrusion
Extrusion molding
fiber content
fibers
Forms of application and semi-finished materials
Injection molding
Materials science
Morphology
Newsprint
Polylactic acid
Polymer industry, paints, wood
Polymer matrix composites
Polymers
Recycled
Reinforcement
Resins
Storage modulus
Technology of polymers
Thermal decomposition
thermal degradation
Thermogravimetric analysis
thermogravimetry
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Summary:“Green”/biobased composites were prepared from poly(lactic acid) (PLA) and recycled cellulose fibers (from newsprint) by extrusion followed by injection molding processing. The physico-mechanical and morphological properties of the composites were investigated as a function of varying amounts of cellulose fibers. Compared to the neat resin, the tensile and flexural moduli of the composites were significantly higher. This is due to higher modulus of the reinforcement added to the PLA matrix. Dynamic mechanical analysis (DMA) results also confirmed that the storage modulus of PLA increased on reinforcements with cellulose fibers indicating the stress transfers from the matrix resin to cellulose fiber. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) showed that the presence of cellulose fibers did not significantly affect the crystallinity, or the thermal decomposition of PLA matrix up to 30 wt% cellulose fiber content. Overall it was concluded that recycled cellulose fibers from newsprint could be a potential reinforcement for the high performance biodegradable polymer composites.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-005-1998-4