Separation and Recovery of Nylon from Carpet Waste Using a Supercritical Fluid Antisolvent Technique

Griffith, Aron T.; Park, YoonKook; Roberts, Christopher B.

doi:10.1080/03602559909351590

Cited by 29 publications

(30 citation statements)

References 5 publications

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“…However, high temperatures (170-210°C) and pressures (500-1,000 atm) are required to dissolve the various polymers in the SCF solvent. Another development enables the separation of carpet waste at close to room temperature and moderate pressure [40]. Up to 2.3 wt% nylon was dissolved in an 88 wt% formic acid solution.…”

Section: Dissolution/reprecipitation Techniquementioning

confidence: 99%

See 1 more Smart Citation

Fiber and Textile Waste Utilization

Wang

2010

Waste Biomass Valor

217

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Due to the growth in world population and overall improvement of living standard, global fiber consumption has been steadily increasing in the past few decades, which leads to a higher amount of post industrial and post consumer fiber waste. This paper provides an overview on fiber and textile recycling, focusing on the case of carpets, which account for a large part of textile waste. It includes a general description of fibrous waste, statistics, material characteristics (compositions) and sources. It also offers a summary on some selected recycling technologies and products from the recycling processes. Observations on future trend and needs for further development are also discussed.

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Section: Dissolution/reprecipitation Techniquementioning

confidence: 99%

“…Another approach to separate carpet components is to use a supercritical fluid (SCF) method in a batch process [39,40]. The solubility of the polymer changes with the variation in pressure and temperature of the SCF.…”

Section: Dissolution/reprecipitation Techniquementioning

confidence: 99%

Fiber and Textile Waste Utilization

Wang

2010

Waste Biomass Valor

217

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“…Usage of petro-based materials in discarded carpets is beneficial to environment and could alleviate high pressure from shortage of oil resources. Carpet reusing methods mainly include depolymerization [12], polyamide extraction [13], melt blending [14] and burning for heat energy [15].…”

Section: Introductionmentioning

confidence: 99%

Acoustical and mechanical properties of thermoplastic composites from discarded carpets

Pan

Zhao

et al. 2016

Composites Part B: Engineering

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Without additional matrix or reinforcement, compression molded composites from waste polypropylene (PP) carpets/nylon (PA) carpets or PP carpets/polyester (PET) carpets have higher mechanical properties and sound absorption than traditional jute/PP composites. Large amount of carpets have been discarded every year, leading to waste of petro-based materials and serious environmental pollution. Fabrication of composites from discarded carpets via compression molding could save petroleum resources and alleviate environmental pressure. In this research, the compression molded composites from waste PP/PA carpets or PP/PET carpets showed good mechanical properties, sound absorption and water stability. Compared to the jute/PP composites, nylon 6,6 (PA66)/PP carpet composites had 37% and 9% higher flexural strength and impact resistance, as well as 45% and 10% higher sound absorption and water stability, indicating their potential for transportation and construction industries.

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“…Many efforts have been made to recycle waste carpets, including depolymerization , polyamide extraction , melt blending, and incineration . Although the petroleum based fibers from carpets could be recycled, disposal of carpet binders consisting of styrene‐butadiene rubber (SBR) still caused environmental problems.…”

Section: Introductionmentioning

confidence: 99%

Compression‐molded composites from waste polypropylene carpets

Zhao

Pan

et al. 2016

Polymer Composites

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In this research, compression-molded composites were developed from discarded polypropylene (PP) carpets and showed good mechanical properties, water stability and acoustic property. Compared to jute/PP composites, the composites from PP carpets had 14%, 20%, and 40% higher flexural strength, impact resistance, and elastic modulus, respectively. In addition, with 58.3% and 14.5% higher sound absorption and water stability than jute/PP composites, the composites from carpets demonstrated good potential for industrial applications and could promote sustainability of material industries. POLYM. COMPOS.,

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Separation and Recovery of Nylon from Carpet Waste Using a Supercritical Fluid Antisolvent Technique

Cited by 29 publications

References 5 publications

Fiber and Textile Waste Utilization

Fiber and Textile Waste Utilization

Acoustical and mechanical properties of thermoplastic composites from discarded carpets

Compression‐molded composites from waste polypropylene carpets

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