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Sustainable Composite Based on Recycled Poly (Ethylene Terephthalate) Embedded with Titanium Phosphate/Zinc/Silver Nanofiller: Physico-Chemical Evaluations
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Researchers developed composite materials by blending recycled PET bottles with titanium phosphate nanofillers modified with zinc and silver, finding that the additives reduced surface hydrophobicity and stiffened the amorphous phase while preserving mechanical damping — suggesting potential as multifunctional antimicrobial textiles aligned with circular economy principles.
Considering the commitments outlined in the United Nations 2030 Agenda, as well as the principles of recycling and the Circular Economy, this work aimed to develop a new material with enhanced properties and added value from post-consumer poly (ethylene terephthalate) (rPET) bottles. Extruded composites based on rPET were loaded with pristine titanium phosphate (TiP) and TiP modified with zinc and silver salts. The rheological assessment showed variation at low frequencies. A reduction in the contact angle was detected with the addition of fillers. No variation in rPET crystallization was observed using optical microscopy. The fillers did not affect the lightfastness. Some stiffening of the rPET amorphous phase was noted, but the damping ability of rPET remained unchanged. The material is believed to offer multifunctional feasibility for the textile sector, potentially acting as a light stabilizer and antimicrobial agent. The work endorses the principles of sustainability and confirms the suitability of recycling as a means to reduce the impact of post-consumer plastics.
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Sustainable Reinforcement of Rubber Compound Using Recycled PET (Polyethylene Terephthalate): A Review
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A comprehensive review found that incorporating recycled PET into rubber compounds can improve tensile strength by up to 45%, enhance thermal stability by 20–30°C, and reduce energy consumption by approximately 50 MJ/kg compared to virgin PET, while advancing circular economy goals. Diverting post-consumer PET waste into high-performance rubber composites reduces the volume of plastic that would otherwise enter waste streams where it fragments into microplastics.
Progress of Recycled Polyester in Rheological Performance in Molding, and Economic Analysis of Recycled Fibers in Fashion and Textile Industry
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This review examined the recycling performance of polyester fibers and assessed the economic viability of recycled polyester in the fashion and textile industry. Recycled polyester from PET bottles and textile waste showed acceptable rheological properties for fiber production. Expanding recycled polyester use in fashion reduces the need for virgin plastic and addresses the textile industry's substantial microplastic pollution footprint.
New Polymeric Composites Derived from Waste PET: Synthesis, Characterization, and Antimicrobial Activity
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Researchers synthesized novel PVA-terephthalate polymeric composites from waste PET through hydrolysis and reflux with glycerine and polyvinyl alcohol, incorporating metal salts to create nickel, zinc, strontium, and iron variants. The composites demonstrated moderate antimicrobial activity against S. aureus, P. aeruginosa, and Candida albicans, and showed potential for applications in food packaging and seedling bags as a strategy to valorize PET waste.
Extrusion and Characterization of Recycled Polyethylene Terephthalate (rPET) Filaments Compounded with Chain Extender and Impact Modifiers for Material-Extrusion Additive Manufacturing
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Researchers developed recycled PET plastic filaments with improved mechanical properties for use in 3D printing, by adding chain extenders and impact modifiers during processing. Converting plastic waste into 3D printing feedstock offers a pathway to upcycle PET bottles that would otherwise fragment into microplastics in the environment.
A Comparative Study on Mechanic and Structural Properties of Recycled Pet (R-Pet) and Viscose Blended Yarns
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This study investigated the physical, mechanical, and structural properties of blended yarns made from recycled PET (r-PET) fibers from plastic bottles and viscose fibers at various mixing ratios. Four yarn compositions were tested, and blending ratio was found to significantly affect yarn properties, with 33% and 50% r-PET yarns performing similarly across most measures. The work demonstrates a viable textile recycling pathway that repurposes plastic bottle waste while reducing environmental plastic pollution.
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