Production of polyurethane foams from Betula pendula

Cruz‐Lopes, Luísa; Domingos, Idalina; Ferreira, José; Lemos, Luís Teixeira de; Esteves, Bruno; Aires, P.

doi:10.1201/9780429289798-51

Cited by 2 publications

(4 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, it was more important in those eco-composites containing higher amounts of dog wool microparticles. This is indicative of the presence of unreacted isocyanate [25]. The peaks at 1710, 1240, and 1070 cm −1 relate to the stretching vibrations of the C=O and C-O of the ester groups, while the overlapping bands between 1540 and 1517 cm −1 can be attributed to the stretching and bending vibrations of the C-N and N-H of the urethane moieties, respectively.…”

Section: Atr-ftir Spectramentioning

confidence: 98%

See 1 more Smart Citation

Dog Wool Microparticles/Polyurethane Composite for Thermal Insulation

et al. 2020

View full text Add to dashboard Cite

A polyurethane (PU)-based eco-composite foam was prepared using dog wool fibers as a filler. Fibers were acquired from pet shops and alkaline treated prior to use. The influence of their incorporation on the PU foams’ morphological, thermal, and mechanical properties was investigated. The random and disorganized presence of the microfibers along the foam influence their mechanical performance. Tensile and compression strengths were improved with the increased amount of dog wool microparticles on the eco-composites. The same occurred with the foams’ hydration capacity. The thermal capacity was also slightly enhanced with the incorporation of the fillers. The fillers also increased the thermal stability of the foams, reducing their dilatation with heating. The best structural stability was obtained using up to 120 °C with a maximum of 15% of filler. In the end, the dog wool waste was rationally valorized as a filler in PU foams, demonstrating its potential for insulation applications, with a low cost and minimal environmental impact.

show abstract

Section: Atr-ftir Spectramentioning

confidence: 98%

Section: Atr-ftir Spectramentioning

confidence: 99%

Dog Wool Microparticles/Polyurethane Composite for Thermal Insulation

et al. 2020

View full text Add to dashboard Cite

show abstract

“…In terms of biodegradability, nonionic surfactants fared better than ionic surfactants when it came to the removal of hydrocarbon pollutants from the soil. Cruz-Lopes et al (2019) employed the column washing technique in combination with electro-Fenton (EF) to monitor the biodegradability of leachates and TPH-contaminated soil [21]. Moreover, Tween surfactant has been used to remediate hydrocarbon pollutants, like phenanthrene and fractions of petroleum (diesel, kerosene, and gasoline) [22].…”

Section: Theory and Mechanism Of 'Surfactant-enhanced Soil Remediation'mentioning

confidence: 99%

“…In terms of biodegradability, nonionic surfactants fared better than ionic surfactants when it came to the removal of hydrocarbon pollutants from the soil. Cruz-Lopes et al ( 2019) employed the column washing technique in combination with electro-Fenton (EF) to monitor the biodegradability of leachates and TPH-contaminated soil [21]. Moreover, Tween surfactant Before employing surfactant-aided remediation of polluted soils, a variety of scientific elements should be considered, such as the adsorption of the surfactants on the dirt, their capability to dissolve/elute pollutants, their toxicity, and their biodegradability.…”

Section: Theory and Mechanism Of 'Surfactant-enhanced Soil Remediation'mentioning

confidence: 99%

Soil Contaminants and Their Removal through Surfactant-Enhanced Soil Remediation: A Comprehensive Review

Tiwari,

Tripathy

2023

Sustainability

View full text Add to dashboard Cite

This review provides a comprehensive analysis of the effectiveness of surfactants in enhancing the remediation of contaminated soils. The study examines recent and older research on the use of effluent treatment techniques combined with synthetic surface-active agents, bio-surfactants, and various categories of surfactants for soil reclamation purposes. The main purpose of this review is to evaluate the effectiveness of surfactants in enhancing the remediation of contaminated soils. The research question is to explore the mechanisms through which surfactants enhance soil remediation and to assess the potential benefits and limitations of surfactant-based remediation methods. This review was conducted through an extensive literature search of relevant articles published in scientific databases. The articles were selected based on their relevance to the topic and their methodological rigor. Types of possible soil pollutants and the requirements of specific surfactants were discussed. Structural relationships between pollutant and surfactants were described thoroughly. Extensive study revealed that surfactants have shown great potential in enhancing the remediation of contaminated soils. Surfactants can improve the solubility and mobility of hydrophobic contaminants and facilitate their removal from soil. However, the effectiveness of surfactant-based remediation methods depends on several factors, including the type of contaminant, the soil properties, and the surfactant concentration and type. Surfactant-enhanced soil remediation can be an effective and sustainable method for addressing soil contamination. However, the optimal conditions for using surfactants depend on the specific site characteristics and contaminant properties, and further research is needed to optimize the use of surfactants in soil remediation.

show abstract

Production of polyurethane foams from Betula pendula

Cited by 2 publications

References 1 publication

Dog Wool Microparticles/Polyurethane Composite for Thermal Insulation

Dog Wool Microparticles/Polyurethane Composite for Thermal Insulation

Soil Contaminants and Their Removal through Surfactant-Enhanced Soil Remediation: A Comprehensive Review

Contact Info

Product

Resources

About