Reprocessability of high impact polystyrene/clay nanocomposites in extrusion

Nunes, Mário A. B. S.; Galvão, Luciana Suarez; Ferreira, Thiago P.M.; Luiz, Emerson J.F.T.; Bastos, Yuri L.M.; Santos, Amélia S.F.

doi:10.1016/j.polymdegradstab.2015.12.013

Cited by 19 publications

(6 citation statements)

References 45 publications

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“…Both chain scission and cross-linking compete in HIPS reprocessing. 114,115 that the elongation at break of HIPS decreased by 38% after nine reprocessing cycles. 115 Thus, mechanical recycling of PS has several limitations.…”

Section: ■ Introductionmentioning

confidence: 95%

“…Chain scission leads to reprocessing by both molecular weight and rheological measurements. Both chain scission and cross-linking compete in HIPS reprocessing. , At higher temperatures or cycles, chain scission begins to dominate over cross-linking, and the elongation at break of HIPS decreases. Vilaplana et al reported that the elongation at break of HIPS decreased by 38% after nine reprocessing cycles .…”

Section: Classification Properties and Recycling Of Medical Plasticsmentioning

confidence: 99%

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Sustainable Alternatives to Nondegradable Medical Plastics

Jiang,

Satoh,

Tung

et al. 2022

ACS Sustainable Chem. Eng.

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In light of the global climate crisis and commitments toward net-zero carbon emissions, this Perspective evaluates the current status of developments in recycling methods and bioplastics to identify long-term sustainable alternatives. The recycling and product application of major medical plastics, including poly(vinyl chloride) (PVC), polyethylene (PE), polypropylene (PP), and polystyrene (PS), are discussed, and their circular potential is evaluated. Researchers are actively investigating bioplastics to solve present concerns and curb the global increase in greenhouse gas (GHG) emissions from petroleum-based plastics. Current recycling methods for PE and PP can be scaled up, and bioversions of plastics, such as bio-PE and bio-PP, can be used as a long-term sustainable solutions to realize their circular potential. As an alternative to PVC and PS, materials with inefficient recycling methods, recent promising bioplastics such as polyurethane (PU) and poly(lactic acid) (PLA) have a competitive performance. Our Perspective recognizes the need for further research on issues such as integrated recycling processes and the possibility of commercializing bioplastics.

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Section: ■ Introductionmentioning

confidence: 95%

Section: Classification Properties and Recycling Of Medical Plasticsmentioning

confidence: 99%

Sustainable Alternatives to Nondegradable Medical Plastics

Jiang,

Satoh,

Tung

et al. 2022

ACS Sustainable Chem. Eng.

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“…According to Jesus et al (2019) the thermal degradation of recycled PS is in the range of 410°C, this degradation being attributed to the breaking of bonds in saturated and unsaturated carbon in the polystyrene. In addition, Nunes et al (2016) reports in their analysis that recycled PS presents a thermogravimetric curve with only one degradation step, with a pronounced slope of the curve and with a variation between the initial and final degradation temperature of approximately 50°C. Figure 5 shows the DSC curves of commercial and recycled PS where they presented a single endothermic event, however, recycled PS showed a peak shift to the right at ̴ 433°C compared to commercial PS, which peaked at ̴ 420°C.…”

Section: Thermogravimetric Derivative Analysis (Drtg)mentioning

confidence: 99%

Thermal and toxicological analysis of commercial polystyrene with recycled polystyrene

Silva

Santos

Lustosa

et al. 2022

RSD

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The purpose of this work was to characterize, through analytical methods, the physicochemical and toxicological properties between commercial polystyrene and recycled polystyrene. The characterization of the respective products was started with X-Ray Fluorescence (FRX), Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC). The in vitro analysis of toxicity in microcrustacean Artemia salina was carried out. The FRX analyzes indicated the presence of chlorine and bromine in the commercial PS. It was observed that recycled PS presents greater thermal stability when compared to commercial PS. No toxicity results were observed for the two types of samples cited in this research.

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“…As medidas de EIE foram realizadas expondo uma área de 78 mm 2 da amostra em uma solução de 3,5% (m/v) de NaCl. Os dados de EIE foram obtidos utilizando um potenciostato/galvanostato IviumStat da Ivium Technologies, auxiliado pelo software O uso de argilomineirais como montmorilonita (MMT) e mica muscovita (Mica) como cargas em compósitos poliméricos tem sido motivo estudos para desenvolvimento de novos nanocompósitos [3][4][5][6][7][8][9]. As argilas montmorilonita (MMT), têm sido utilizadas como cargas para a obtenção de revestimentos nanoestruturados, proporcionando melhorias significativas no desempenho protetivo frente à corrosão e propriedades de barreira em revestimentos orgânicos [1][2][3][4][5][6].…”

Section: Caracterização Da Tinta Em Pó Aplicada Sobre O Aço Carbonounclassified

Estudo Do Efeito Da Adição De Diferentes Teores De Argilas Montmorilonita E Mica Muscovita No Comportamento Protetivo De Tintas Em Pó Base Epóxi Na Aplicadas Sobre Aço Aisi 1008

Ferreira¹,

Beltrami²,

Piazza³

et al. 2019

Tecnol. Metal. Mater. Min.

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O presente trabalho apresenta a elaboração de nanocompósitos poliméricos de tinta em pó, à base de resina epoxídica e diferentes teores de argilas montmorilonita e mica muscovita. Os nanocompósitos foram obtidos no estado fundido em extrusora duplarrosca co-rotante e foram analisados por ensaios de aderência, perfilometria, ângulo de contato, espectroscopia de impedância eletroquímica e névoa salina. Os resultados indicam que a rugosidade superficial aumentou com o aumento das concentrações de argilas. Em geral a grande maioria das amostras com argilas apresentaram melhora nas propriedades protetivas, quando comparadas com as amostras sem adição de argila. Palavras-chave: Corrosão; Montmorilonita: Mica muscovita.

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Reprocessability of high impact polystyrene/clay nanocomposites in extrusion

Cited by 19 publications

References 45 publications

Sustainable Alternatives to Nondegradable Medical Plastics

Sustainable Alternatives to Nondegradable Medical Plastics

Thermal and toxicological analysis of commercial polystyrene with recycled polystyrene

Estudo Do Efeito Da Adição De Diferentes Teores De Argilas Montmorilonita E Mica Muscovita No Comportamento Protetivo De Tintas Em Pó Base Epóxi Na Aplicadas Sobre Aço Aisi 1008

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