Jonas Bertholdi
Universidade do Estado de Santa Catarina
SonicationCuring (chemistry)Vickers hardness testRule of mixturesComposite materialFourier transform infrared spectroscopyEpoxyTribologyFlexural strengthMaterials scienceSolventMultiwalled carbonDifferential scanning calorimetryRaman spectroscopyCrystallinityNanoindentationCarbon nanotubeDynamic mechanical analysisDispersion (chemistry)Nanocomposite
3Publications
2H-index
46Citations
Publications 3
Newest
#1Jonas Bertholdi (UDESC: Universidade do Estado de Santa Catarina)H-Index: 2
#2Carlos V. Opelt (UDESC: Universidade do Estado de Santa Catarina)H-Index: 8
Last. Carlos Maurício Lepienski (UFPR: Federal University of Paraná)H-Index: 26
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This work studied the effects of the addition of Multiwalled Carbon Nanotubes (MWCNT) to a PLLA matrix. Two distinct methods of preparation were employed: a combination of a solvent/ mechanical stirring and a combination of a solvent/high energy sonication. The mechanical properties of the nanocomposites were determined by nanoindentation and by the Vickers hardness test. Thermal properties of the nanocomposites (Tg, Tc, Tm and crystallinity degree) were determined by DSC. The tribological prope...
1 CitationsSource
#2Jaqueline SuaveH-Index: 3
Last. Sandro Campos Amico (UFRGS: Universidade Federal do Rio Grande do Sul)H-Index: 36
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In this study, carboxylated (SWCNT-c) and pristine (SWCNT) single-walled carbon nanotubes were randomly dispersed in a hardener prior to mixing it with an epoxy resin. The influence of several parameters on the dispersion process were investigated. The produced samples were characterized by infrared spectroscopy, differential scanning calorimetry, dilatometry, dynamic mechanical analysis, scanning electron microscopy and mechanical testing (tensile, flexural and microhardness). The results obtai...
20 CitationsSource
#1C.E. PizzuttoH-Index: 1
#2Jaqueline SuaveH-Index: 3
Last. Sandro Campos Amico (UFRGS: Universidade Federal do Rio Grande do Sul)H-Index: 36
view all 6 authors...
In this study the effects of the dispersion of carboxylated single-walled carbon nanotubes (SWCNT-c) in epoxy matrices using two different routes were investigated. In the first route, SWCNT-c were dispersed in the resin using solvent and tip sonication. In the second route, SWCNT-c were dispersed in the hardener in two different ways: with and without solvent, but both with tip sonication. For comparison purposes, neat epoxy was also prepared using the same curing conditions. The samples were c...
21 CitationsSource