O efeito do tratamento da atapulgita no desenvolvimento de compósito com o polietileno reciclado
The study aimed at the treatment of attapulgite for the development and characterization of composite recycled low density polyethylene - PEBD_rec embedded with natural attapulgite - ATP_NAT, sifted - ATP_PN and attapulgite treated with sulfuric acid - ATP_TR in different compositions (1, 3 and 5...
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| Formato: | Dissertação |
| Idioma: | por |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
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| Assuntos: | |
| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/12757 |
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| Resumo: | The study aimed at the treatment of attapulgite for the development and
characterization of composite recycled low density polyethylene - PEBD_rec
embedded with natural attapulgite - ATP_NAT, sifted - ATP_PN and attapulgite
treated with sulfuric acid - ATP_TR in different compositions (1, 3 and 5%) and
compared with the PEBD_rec. The atapulgitas, natural, screened and treated, were
characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), particle size
analysis, scanning electron microscopy (SEM), energy dispersive spectroscopy
(EDS) and determining the area specific surface (BET). The composites were
characterized by thermogravimetry (TG), differential scanning calorimetry (DSC), Xray
diffraction (XRD), torque rheometry, scanning electron microscopy (SEM) and
traction. The composite PEBD_rec / ATP (natural, sieved and treated) were
produced by mixing in the molten state in a single screw extruder matrix wire with
subsequent reprocessing matrix tape. It was found that the screening of attapulgite
not reduce the quantity of quartz and the acid treatment completely extracted
dolomite aggregate impurities of the channels attapulgite, and increase their surface
area. The addition of attapulgite in PEBD_rec acts as a catalyst, reducing the thermal
stability of the polymer. The increased concentration of attapulgite, increases
resistance and reduces the elongation at break and modulus of elasticity of the
composite PEBD_rec / attapulgite |
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