Upcycling Discarded Polyethylene Terephthalate Plastic into Highly Valuable Flexible Materials with Good Tensile Strength, Weather, and Corrosion Resistance via Molecular Structure Reconstruction DOI
Bingying Gao, Yunyun Sun,

Xuzhang Sun

et al.

ACS Applied Engineering Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 25, 2024

The chemical conversion of discarded poly(ethylene terephthalate) (dPET) into functional materials presents a promising approach to waste disposal. However, the loss flexibility and tensile strength significantly limits practical application these fabricated materials. This work aims develop simple effective convert dPET with flexible properties through molecular structure reconstruction. Molecular structures─C10H11ClO3, (C7H4O2)n, C15H14O3─were formed introduction styrene butadiene block polymer react dPET. These three products were embedded viscous fluid in rodlike or sheet-like shapes, homogeneous stable cross-linked structures by physical bonds rather than mixture, which is responsible for good strength, corrosion resistance, weather resistance material. resulting material had up 4.2 MPa. Even after 50 cycles stretching at 80% elongation without dwell time, sample retained its resilience. also exhibited no deformation dissolution observed even 30 h exposure harsh environments, including strong acids, alkalis, salt solutions. When exposed simulated sunlight 6 h, 200–340 nm range. Overall, successful fabrication high-value disposal plastic. samples show potential applications various areas such as soft joints, shock absorbers, pipe absorbers.

Language: Английский

Methodological aspects of strength testing of building products based on thermoplastic waste DOI
Natalya Fomina,

Д. К. Тимохин,

A. V. Strachov

et al.

Stroitel nye Materialy, Journal Year: 2025, Volume and Issue: 1-2, P. 95 - 101

Published: April 9, 2025

The urgency of the problem recycling polymer waste is increasing every year. It promising to use thermoplastic as binders in polymer-mineral compositions for production small-piece construction products such paving slabs, curbs, parking limiters, elements landscape design, etc. Technical requirements compositions, properties their products, test methods are not regulated. One most informative characteristics static uniaxial compression tests. necessary accumulate statistics on strength tests composites based secondary thermoplastics and develop mathematical patterns influence sample size, primarily thickness, properties. Therefore, work aimed at improving methodological aspects assessing compressive samples matrices. Crushed polyethylene terephthalate polypropylene, a combination additive ethylene vinyl acetate, limestone flour were used make samples. Samples various thicknesses made by pressing from hot mixtures, then was determined. As result, differentiated approach geometry proposed, taking into account peculiarities manufacture complexity obtaining exactly same thickness. A linear basic dependence thickness obtained, method calculating experimental control one proposed. proposed take 4 cm control, analogy with current standards cement composites. Using conversion method, it possible design formulations using powdered mineral fillers (filling degree more than 50% weight) wastes, combining rigid polyolefins compositions.

Language: Английский

Citations

0
High temperature degradation mechanism, mechanical properties and constitutive model of reed straw reinforced brick aggregate concrete DOI
Yuanyuan Zhao, Kejie Jiang,

Xuanteng Lu

et al.

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 475, P. 141276 - 141276

Published: April 11, 2025

Language: Английский

Citations

0
Hybrid effects of carbon nanotubes and nano-rubber on the mechanical properties and microstructure of oil well cement paste cured at different temperatures: Experimental studies and a micromechanical model DOI

Jiyun Shen,

Yan Wang, Yongjin Yu

et al.

Cement and Concrete Composites, Journal Year: 2024, Volume and Issue: unknown, P. 105842 - 105842

Published: Nov. 1, 2024

Language: Английский

Citations

2
Upcycling Discarded Polyethylene Terephthalate Plastic into Highly Valuable Flexible Materials with Good Tensile Strength, Weather, and Corrosion Resistance via Molecular Structure Reconstruction DOI
Bingying Gao, Yunyun Sun,

Xuzhang Sun

et al.

ACS Applied Engineering Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 25, 2024

The chemical conversion of discarded poly(ethylene terephthalate) (dPET) into functional materials presents a promising approach to waste disposal. However, the loss flexibility and tensile strength significantly limits practical application these fabricated materials. This work aims develop simple effective convert dPET with flexible properties through molecular structure reconstruction. Molecular structures─C10H11ClO3, (C7H4O2)n, C15H14O3─were formed introduction styrene butadiene block polymer react dPET. These three products were embedded viscous fluid in rodlike or sheet-like shapes, homogeneous stable cross-linked structures by physical bonds rather than mixture, which is responsible for good strength, corrosion resistance, weather resistance material. resulting material had up 4.2 MPa. Even after 50 cycles stretching at 80% elongation without dwell time, sample retained its resilience. also exhibited no deformation dissolution observed even 30 h exposure harsh environments, including strong acids, alkalis, salt solutions. When exposed simulated sunlight 6 h, 200–340 nm range. Overall, successful fabrication high-value disposal plastic. samples show potential applications various areas such as soft joints, shock absorbers, pipe absorbers.

Language: Английский

Citations

0