6533b7cffe1ef96bd12586b3
RESEARCH PRODUCT
New Polylactic Acid Composites Reinforced with Artichoke Fibers
Luigi BottaAntonino ValenzaRoberto ScaffaroT. ScaliciVincenzo Fioresubject
biocompositeScanning electron microscopy (SEM)Materials scienceMorphology (linguistics)Scanning electron microscopequasi-static tensile testsDynamic mechanical analysis (DMA)Moduluslcsh:TechnologyArticlefilm stackingFilm stackingQuasi-static tensile testschemistry.chemical_compoundMaterials Science(all)Polylactic acidArtichoke fiberPLA; artichoke fiber; biocomposites; film stacking; quasi-static tensile tests; dynamic mechanical analysis (DMA); scanning electron microscopy (SEM)Ultimate tensile strengthmedicinescanning electron microscopy (SEM).General Materials ScienceFiberComposite materiallcsh:Microscopylcsh:QC120-168.85biocompositesBiocompositesartichoke fiberlcsh:QH201-278.5lcsh:TPLA; artichoke fiber; biocomposites; film stacking; quasi-static tensile tests; dynamic mechanical analysis (DMA); scanning electron microscopy (SEM).Stiffnessdynamic mechanical analysis (DMA)Settore ING-IND/22 - Scienza E Tecnologia Dei Materiali/dk/atira/pure/subjectarea/asjc/2500chemistrylcsh:TA1-2040PLAlcsh:Descriptive and experimental mechanicslcsh:Electrical engineering. Electronics. Nuclear engineeringmedicine.symptomscanning electron microscopy (SEM)lcsh:Engineering (General). Civil engineering (General)lcsh:TK1-9971quasi-static tensile testdescription
In this work, artichoke fibers were used for the first time to prepare poly(lactic acid) (PLA)-based biocomposites. In particular, two PLA/artichoke composites with the same fiber loading (10% w/w) were prepared by the film-stacking method: the first one (UNID) reinforced with unidirectional long artichoke fibers, the second one (RANDOM) reinforced by randomly-oriented long artichoke fibers. Both composites were mechanically characterized in tensile mode by quasi-static and dynamic mechanical tests. The morphology of the fracture surfaces was analyzed through scanning electron microscopy (SEM). Moreover, a theoretical model, i.e., Hill's method, was used to fit the experimental Young's modulus of the biocomposites. The quasi-static tensile tests revealed that the modulus of UNID composites is significantly higher than that of the neat PLA (i.e., ~40%). Moreover, the tensile strength is slightly higher than that of the neat matrix. The other way around, the stiffness of RANDOM composites is not significantly improved, and the tensile strength decreases in comparison to the neat PLA.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-11-16 | Materials |