Characterization of Thermal Behavior of Polyester Composites Reinforced with Curaua Fibers by Differential Scanning Calorimetry

Lopes, Felipe Perissé Duarte; Ferreira, Ailton Silva; Rodríguez, Rubén Jesus Sánchez; Castillo, Teresa E.; Monteiro, Sérgio Neves

doi:10.1002/9781118495285.ch36

Cited by 1 publication

(1 citation statement)

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“…This behaviour was associated with the increased molecular restriction imposed by the addition of the fibres to the polymeric matrix. The presence of the fibres hindered the mobility of the polymeric matrix molecules, suggesting that there was good curaua/polyester interaction [38]. The Ca(OH) 2 /polyester composite showed the highest T g value (141.92°C), indicating a higher degree of fibre/matrix interaction for this treatment.…”

Section: Resultsmentioning

confidence: 99%

Chemical treatment of curaua fibres and its effect on the mechanical performance of fibre/polyester composites

Teixeira

Dalla²,

Luz

2020

Plastics, Rubber and Composites

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This study investigated the influence of the surface treatment of curaua fibres (Ananas erectifolius) on the morphological, thermal and mechanical properties of polyester composites when the treated fibres (10 wt-%) were added. The following treatment agents were assessed: 10% Ba(OH) 2 , 14% Ca(OH) 2 , 5% NaOH, 10% KOH and 5% silane. The treatments removed amorphous components, thereby increasing the crystallinity of the fibres. Among the alkali treatments, KOH gave the highest crystallinity index (67.09%), Ca (OH) 2 had the best tensile strength (19 MPa) and Ca(OH) 2 treatment resulted in the highest composite thermal stability (315°C). Fibres treated with Ba(OH) 2 resulted in the composite with the greatest resistance to impact (55 vs 10 J m −1 for the neat matrix). Finally, the silane-treated fibres resulted in composites with a better performance than the other treatments. There was a prominent pattern of improved performance for the silane-treated fibre composites in all the analyses performed in this study.

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Section: Resultsmentioning

confidence: 99%