Thermal and Rheological Characterization of Recycled PET/Virgin HDPE Blend Compatibilized with PE-g-MA and an Epoxy Chain Extender

Santos, Raquel Marques dos; Costa, Anna Raffaela M.; Almeida, Yêda Medeiros Bastos de; Carvalho, Laura H.; Delgado, J. M. P. Q.; Lima, Elisiane Santana de; Magalhães, Hortência Luma Fernandes; Gomez, Ricardo S.; Leite, Boniek Evangelista; Rolim, Fagno Dallino; Figueiredo, Maria José de; Lima, Antônio Gilson Barbosa de

doi:10.3390/polym14061144

Cited by 7 publications

(3 citation statements)

References 43 publications

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“…Darshan et al [ 78 ] also reported the same effect for blends consisting of HDPE, PBS and the compatibilizer. Additionally, there was physical interaction involved among the blend components with the compatibilizer, and these required more energy and higher temperature to induce random chain scission through thermal degradation [ 84 ]. The result is consistent with what was found by Czarnecka-Komorowska et al [ 41 ] with regard to PE–g–MA-incorporated LDPE/PBS blends.…”

Section: Resultsmentioning

confidence: 99%

Blending of Low-Density Polyethylene and Poly(Butylene Succinate) (LDPE/PBS) with Polyethylene–Graft–Maleic Anhydride (PE–g–MA) as a Compatibilizer on the Phase Morphology, Mechanical and Thermal Properties

et al. 2023

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It is of significant concern that the buildup of non-biodegradable plastic waste in the environment may result in long-term issues with the environment, the economy and waste management. In this study, low-density polyethylene (LDPE) was compounded with different contents of poly(butylene succinate) (PBS) at 10–50 wt.%, to evaluate the potential of replacing commercial plastics with a biodegradable renewable polymer, PBS for packaging applications. The morphological, mechanical and thermal properties of the LDPE/PBS blends were examined in relation to the effect of polyethylene–graft–maleic anhydride (PE–g–MA) as a compatibilizer. LDPE/PBS/PE–g–MA blends were fabricated via the melt blending method using an internal mixer and then were compression molded into test samples. The presence of LDPE, PBS and PE–g–MA individually in the matrix for each blend presented physical interaction between the constituents, as shown by Fourier-transform infrared spectroscopy (FTIR). The morphology of LDPE/PBS/PE–g–MA blends showed improved compatibility and homogeneity between the LDPE matrix and PBS phase. Compatibilized LDPE/PBS blends showed an improvement in the tensile strength, with 5 phr of compatibilizer providing the optimal content. The thermal stability of LDPE/PBS blends decreased with higher PBS content and the thermal stability of compatibilized blends was higher in contrast to the uncompatibilized blends. Therefore, our research demonstrated that the partial substitution of LDPE with a biodegradable PBS and the incorporation of the PE–g–MA compatibilizer could develop an innovative blend with improved structural, mechanical and thermal properties.

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Section: Resultsmentioning

confidence: 99%

Blending of Low-Density Polyethylene and Poly(Butylene Succinate) (LDPE/PBS) with Polyethylene–Graft–Maleic Anhydride (PE–g–MA) as a Compatibilizer on the Phase Morphology, Mechanical and Thermal Properties

et al. 2023

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“…In order to obtain high levels of transesterification reactions, the processing should be carried out at relatively high temperatures or medium temperatures within long residence times. The use of chain extenders, such as epoxides, [ 18–22 ] bis‐oxazolines [ 23–25 ] and isocyanides, [ 26–28 ] had been offered as a practical and facile breakthrough in compensating the degradation of PET molecules. Chain extenders are chemicals with low molecular weights, which are very effective even in small amounts, and capable of creating high‐speed reactions.…”

Section: Introductionmentioning

confidence: 99%

Epoxy chain extender grafted pyrophyllite/poly(ethylene terephthalate) composites with enhanced crystallinity and mechanical properties

Huang

et al. 2022

Polymer Composites

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The surface-grafting modification of nano clay has become increasingly important for improving the practical application of clays. In this study, an epoxy chain extender ADR-4468 was used to modify the surface of pyrophyllite (Prl), and the effect of ADR-4468-modified pyrophyllite (A-Prl) on the properties of poly(ethylene terephthalate) (PET) and PET/poly(ethylene glycol-co-1,3/1,4-cyclohexanedimethanol terephthalate) (PETG) composites was investigated. The modified composites were characterized by Fourier transformed infrared spectroscopy, X-ray diffraction and TG, which proved that the A-Prl was successfully synthesized, and the addition of ADR-4468 did not change the crystal structure of pyrophyllite. The grafted ADR-4468 improved the agglomeration of Prl, and some A-Prl reached nano-scale dispersion in PET and PET/PETG composites. The rheological properties, crystallization behavior and mechanical properties of PET and PET/PETG nanocomposites were systematically investigated. The results showed that A-Prl was an effective nucleating agent for PET, which significantly improved the crystallization properties of PET composites. The A-Prl also improved the comprehensive mechanical properties of PET and PET/PETG nanocomposites.

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“…Another group of compatibilizers often used in research are the random copolymers containing GMA, such as HDPE-g-GMA [15], ethylene-glycidyl methacrylate copolymer (E-GMA) [16], Ethylene Ethyl-Glycidyl Methacrylate (E-EA-GMA) [15], and Ethylene Butyl Acrylate-Glycidyl Methacrylate (EBA-GMA) [17]. Other possibilities that are also promising have been investigated, such as compatibilizing the PET/HDPE system with an epoxy chain extender [18].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Role of Ethylene Vinyl Acetate on the Thermo-Mechanical Properties of PET/HDPE Blends

Hellati

Boufassa²

2022

Eng. Technol. Appl. Sci. Res.

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In this paper, blends of recycled polyethylene terephthalate (r-PET) and high-density polyethylene (HDPE) with and without a compatibilizer were prepared using a Brabender Haake Rheocord at 270°C and 32rpm. Ethylene vinyl acetate was chosen as the compatibilizer and its proportion was set to 5, 7, and 10 wt%. The thermal properties and crystallization behavior were determined by Differential Scanning Calorimetry (DSC). Micromechanical properties were also investigated using a Vickers microindentation tester. The DSC analysis indicates that the melting temperature of r-PET and HDPE in all the blends, compatibilized and uncompatibilized, remains constant and almost the same as those of the pure component. On the other hand, it is shown that the degree of crystallinity of HDPE in the blends calculated by DSC depends on the composition of the polymeric mixture. However, the Hardness (H) decreases with increasing r-PET content until 50/50 composition of r-PET/HDPE is reached, whereas for larger r-PET content values, H increases. The same trend was obtained with the addition of the compatibilizer.

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Thermal and Rheological Characterization of Recycled PET/Virgin HDPE Blend Compatibilized with PE-g-MA and an Epoxy Chain Extender

Cited by 7 publications

References 43 publications

Blending of Low-Density Polyethylene and Poly(Butylene Succinate) (LDPE/PBS) with Polyethylene–Graft–Maleic Anhydride (PE–g–MA) as a Compatibilizer on the Phase Morphology, Mechanical and Thermal Properties

Blending of Low-Density Polyethylene and Poly(Butylene Succinate) (LDPE/PBS) with Polyethylene–Graft–Maleic Anhydride (PE–g–MA) as a Compatibilizer on the Phase Morphology, Mechanical and Thermal Properties

Epoxy chain extender grafted pyrophyllite/poly(ethylene terephthalate) composites with enhanced crystallinity and mechanical properties

Evaluation of the Role of Ethylene Vinyl Acetate on the Thermo-Mechanical Properties of PET/HDPE Blends

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