Post-consumer polyethylene terephthalate and polyamide 66 blends and corresponding short glass fiber reinforced composites

Novello, Marcus Vinicius; Carreira, Lílian Gasparelli; Canto, Leonardo Bresciani

doi:10.1590/1516-1439.281914

Cited by 22 publications

(13 citation statements)

References 18 publications

(20 reference statements)

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“…The tensile strength of the unfilled amorphous PET was 60.7 MPa ( Figure 8 ). We are aligned with the literature values (56 MPa in Aravinthan and Kale [ 43 ] and a little under 60 MPa in Novello et al [ 44 ]), and differences in testing rate and the PET’s I.V. do not make much difference.…”

Section: Resultssupporting

confidence: 88%

Amorphous Poly(ethylene terephthalate) Composites with High-Aspect Ratio Aluminium Nano Platelets

et al. 2022

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Previously, we reported that amorphous poly(ethylene terephthalate) (PET) filled with irregular nodular aluminium (Al) particles gave simultaneous increases in tensile modulus, tensile strength, and impact resistance, which is unusual for materials. Here, we investigated the effect of the particle shape and size by using nano-platelet Al. The Al nano-platelets had a thickness higher than graphenes and clays, but lower than mica and talc, and due to their large widths, they had high aspect ratios. Due to the ductility of Al, the platelets maintained the high aspect ratio and did not snap during injection moulding. In addition to avoiding the usual drop in tensile strength and impact, the composites with nano Al platelets gave an unusually high flexural modulus (8 GPa), which was almost double that attained practically with talc, mica, and graphene. This was because of the high tendency of the Al nano platelets to become oriented during moulding. The Al–PET composite would be a more cost-and-performance effective combination for making conductive composites. The Al is a cheaper material than graphene, surface treatment for adhesion (to PET) is unnecessary, and dispersion issues, such as exfoliation and de-aggregation, are not a problem.

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Section: Resultssupporting

confidence: 88%

Amorphous Poly(ethylene terephthalate) Composites with High-Aspect Ratio Aluminium Nano Platelets

et al. 2022

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“…It was found that the glass transition temperature ( T g ) of the composites shifted to a higher temperature with increasing the ageing time, which was attributed to the cross-linking reactions of the molecular chain. In accordance with the earlier studies [ 22 , 23 ], the ageing properties of the short glass fibre-reinforced PA composites changed due to the interface bonding between glass fibre and PA matrix. Nevertheless, the acquaintance on the properties of heat-resisting PA such as PA10T under the process of thermo-oxidative ageing was small.…”

Section: Introductionsupporting

confidence: 90%

The effect of thermo-oxidative ageing on crystallization, dynamic and static mechanical properties of long glass fibre-reinforced polyamide 10T composites

Wang

et al. 2018

R. Soc. open sci.

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The performances and microstructure of long glass fibre-reinforced polyamide 10T (PA10T/LGF) composites that experienced different ageing temperatures (160 and 200°C) with increasing ageing time are characterized by differential scanning calorimetry (DSC), mechanical analysis, thermogravimetric analysis (TGA) and scanning electron microscopy to probe the correlation between properties of the composites and thermo-oxidative ageing. The DSC results show that PA10T/LGF composites occur on degradation, the fracture of molecular chains and the destruction of crystallization structure, which leads to the crystallization and melting peaks of PA10T/LGF composites to shift to high temperature. On the basis of dynamic mechanical analysis data, the reduction of the interfacial bonding between the glass fibre and PA10T matrix and the motion of molecular chain segments result in the thermo-oxidative ageing of composites. According to the calculation of activation energy (E), thermo-oxidative temperature and ageing time can bring about the decline of the E value, proving the deterioration in performance of PA10T/LGF composites. In view of TGA, the increase in the thermo-oxidative temperature and ageing time promotes the degradation of PA10T/LGF composites. The tensile, flexural and notched impact strengths of PA10T/LGF composites decline with prolonging the ageing temperature and time. The surface of materials produces some microcracks and the cross-section surface of PA10T/LGF composites becomes rougher.

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“…3 . The flexural modulus of the epoxy-coated CNF film was calculated to be 2.5 GPa, which is comparable to that of PET (1.5 to 2.8 GPa) 34 35 36 . The electrical properties of the CNF film were also appealing for use with electronics.…”

Section: Resultsmentioning

confidence: 68%

High-performance green flexible electronics based on biodegradable cellulose nanofibril paper

et al. 2015

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Today's consumer electronics, such as cell phones, tablets and other portable electronic devices, are typically made of non-renewable, non-biodegradable, and sometimes potentially toxic (for example, gallium arsenide) materials. These consumer electronics are frequently upgraded or discarded, leading to serious environmental contamination. Thus, electronic systems consisting of renewable and biodegradable materials and minimal amount of potentially toxic materials are desirable. Here we report high-performance flexible microwave and digital electronics that consume the smallest amount of potentially toxic materials on biobased, biodegradable and flexible cellulose nanofibril papers. Furthermore, we demonstrate gallium arsenide microwave devices, the consumer wireless workhorse, in a transferrable thin-film form. Successful fabrication of key electrical components on the flexible cellulose nanofibril paper with comparable performance to their rigid counterparts and clear demonstration of fungal biodegradation of the cellulose-nanofibril-based electronics suggest that it is feasible to fabricate high-performance flexible electronics using ecofriendly materials.

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Post-consumer polyethylene terephthalate and polyamide 66 blends and corresponding short glass fiber reinforced composites

Cited by 22 publications

References 18 publications

Amorphous Poly(ethylene terephthalate) Composites with High-Aspect Ratio Aluminium Nano Platelets

Amorphous Poly(ethylene terephthalate) Composites with High-Aspect Ratio Aluminium Nano Platelets

The effect of thermo-oxidative ageing on crystallization, dynamic and static mechanical properties of long glass fibre-reinforced polyamide 10T composites

High-performance green flexible electronics based on biodegradable cellulose nanofibril paper

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