Effect of gamma irradiation on the thermal and dyeing properties of blends based on waste poly(ethylene terephthalate) blends

In a world increasingly ixated on the demands of sustainable development, too much atention has been focused on the widely used building materials, mainly on those tools and strategies for their reuse and those characteristics for considering them as environmental-friendly materials. "mong the strategies are the following: (a) increased reliability on waste and recycled materials such action will have to incorporate the substitution of recycled for virgin materials; (b) improved durability through reduction of materials needed for their replacement; and (c) improved mechanical properties, which reduces the use of raw materials. Extensive research and development activities in recycling composite materials have been conducted, and various technologies have been developed: (a) mechanical recycling, (b) thermal recycling, and (c) chemical recycling. However, gamma radiation is an innovative and clean technology, alternative to conventional recycling procedures. Gamma irradiation has proved to be an adequate tool for modiications of the physicochemical properties of polymers, through diferent efects: (a) scission, branching as well as cross-linking of polymer chains and (b) oxidative degradation. Moreover, the reuse and recycling of waste materials and the use of gamma radiation are useful tools for improving the mechanical properties of concrete. In this chapter, we show results of the efects of gamma irradiation on the physicochemical properties of waste and recycled materials and their reuse to enhance the properties of construction composite materials.

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“…The degradation mechanism for PET fibers or PET bulk is the same. No chemical degradation for PET fibers is found up to 200 kGy [17][18][19][20].…”

Section: Structural Modification By Using Gamma Irradiationmentioning

confidence: 99%

Waste and Recycled Materials and their Impact on the Mechanical Properties of Construction Composite Materials

Barrera¹,

Rivas²,

Vigueras-Santiago³

et al. 2016

Composites From Renewable and Sustainable Materials

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The effect of γ‐Irradiation and reactive extrusion on the structure and properties of polycarbonate and starch blends: A work oriented to the recycling of thermoplastic wastes

Vignon

Ayoub

Massardier

2012

J of Applied Polymer Sci

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Polymer materials with improved properties can be obtained through polymer blends. As a polymer mixture is generally immiscible and incompatible, it is necessary to develop new methods to improve the interfacial adhesion. In this study, polycarbonate‐based extruded thermoplastic were developed by blending polycarbonate with thermoplastic starch using extensive process engineering based on structure–property correlations. Starch was destructurized and plasticized followed by melt‐blending with polycarbonate. The optimal conditions for processing of the thermoplastics blends were found to be 230°C, 2 min of processing time, and 3–6 wt % of glycerol. The effect of γ‐irradiation on the fabrication of the blend was studied. Changes in structure, morphology, and properties resulting from γ‐exposure in the range 0–150 kGy were investigated. Electron spin resonance results revealed that numerous radicals remained trapped in the materials after irradiation even after a long time enabling reactions between starch and polycarbonate. Results obtained from tensile test, differential scanning calorimetry, and dynamic mechanical analysis revealed the relatively good affinity between the two components after blending in a micro‐extruder. Irradiated blends are thermally more stable than those non‐irradiated. Mechanical tests also showed that the efficiency of the irradiation depended greatly on the dose applied to the initial materials. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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Application of Radiation Curing on Properties and Performance of Polymers and Polymer Composites

Ghosh

Das

2023

Materials Horizons: From Nature to Nanomaterials

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Effect of gamma irradiation on the thermal and dyeing properties of blends based on waste poly(ethylene terephthalate) blends

Cited by 7 publications

References 19 publications

Waste and Recycled Materials and their Impact on the Mechanical Properties of Construction Composite Materials

Waste and Recycled Materials and their Impact on the Mechanical Properties of Construction Composite Materials

The effect of γ‐Irradiation and reactive extrusion on the structure and properties of polycarbonate and starch blends: A work oriented to the recycling of thermoplastic wastes

Application of Radiation Curing on Properties and Performance of Polymers and Polymer Composites

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