Lipid-extracted algal biomass based biocomposites fabrication with poly (vinyl alcohol)

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Biodiesel production from microalgae has been recognized as a promising route for sustainable energy supply. The extraction process of oil from microalgae usually generates large amount of lipid-extracted algal biomass (LEA), which has not been economically utilized until now. In order to explore economic potential of the residual biomass, LEA from extraction of microalgae strain, Nannochloropsis salina, was employed as the filler in biocomposite fabrication with poly(vinyl alcohol) (PVA). It was noted that the increase of LEA loading reduced mechanical properties, but enhanced the thermal stability of biocomposite materials compared to neat PVA. As poly(diallyldimethylammonium chloride) (PD) was incorporated, mechanical properties of PVA/LEA/PD composites were significantly improved. PD was compatible with negatively charged LEA and PVA matrix as PD possesses positive charges. PVA was compounded with 20% LEA and 12% PD to synthesize the PVA68LEA20PD12 biocomposite. In contrast to neat PVA, this biocomposite recorded the similar mechanical property but the enhanced thermal property. This type of biocomposite film can be applied in commercial industries as specialty materials, for instance, 3D printing material. This helps to improve the economic feasibility of microalgae-based biofuel production. (c) 2016 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2018-04
Language
English
Article Type
Article
Keywords

MECHANICAL-PROPERTIES; COMPOSITE FILMS; NATURAL FIBERS; MICROALGAL BIOMASS; POLYVINYL-ALCOHOL; NANOCOMPOSITES; INTERFACE; CELLULOSE; HYDROGELS; SPECTROSCOPY

Citation

ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS, v.31, pp.525 - 533

ISSN
2211-9264
DOI
10.1016/j.algal.2016.08.016
URI
http://hdl.handle.net/10203/241413
Appears in Collection
CBE-Journal Papers(저널논문)
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