Hydrophobic silica nanoparticles as reinforcing filler for poly (lactic acid) polymer matrix
Properties of poly (lactic acid) (PLA) and its nanocomposites, with silica nanoparticles (SiO2), as filler were investigated. Neat PLA films and PLA films with different percentage of hydrophobic fumed silica nanoparticles (0.2, 0.5, 1, 2, 3 and 5 wt. %) were prepared by solution casting me...
Main Authors: | , , , , , , |
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Format: | Article |
Language: | English |
Published: |
Association of Chemical Engineers of Serbia
2016-01-01
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Series: | Hemijska Industrija |
Subjects: | |
Online Access: | http://www.doiserbia.nb.rs/img/doi/0367-598X/2016/0367-598X1500015P.pdf |
Summary: | Properties of poly (lactic acid) (PLA) and its nanocomposites, with silica
nanoparticles (SiO2), as filler were investigated. Neat PLA films and PLA
films with different percentage of hydrophobic fumed silica nanoparticles
(0.2, 0.5, 1, 2, 3 and 5 wt. %) were prepared by solution casting method.
Several tools were used to characterize the influence of different silica
content on crystalline behavior, and thermal, mechanical and barrier
properties of PLA/SiO2 nanocomposites. Results from scanning electron
microscope (SEM) showed that the nanocomposite preparation and selection of
specific hydrophobic spherical nano filler provide a good dispersion of the
silica nanoparticles in the PLA matrix. Addition of silica nanoparticles
improved mechanical properties, the most significant improvement being
observed for lowest silica content (0.2wt.%). Barrier properties were
improved for all measured gases at all loadings of silica nanoparticles. The
degree of crystallinity for PLA slightly increased by adding 0.2 and 0.5 wt.
% of nano filler. [Projekat Ministarstva nauke Republike Srbije, br.
III46001] |
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ISSN: | 0367-598X 2217-7426 |