Thermal behavior of some polyurethanes reticulated by aminated maltose

Bolcu, Constantin; Vlase, Gabriela; Albu, Paul; Doca, N.; Şişu, Eugen

doi:10.1007/s10973-013-3177-1

Cited by 11 publications

(2 citation statements)

References 6 publications

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“…Figure 3 shows the integrated (a) and partial (b) ATR-FTIR spectra of RPUFs with and without the addition of fillers. It can be seen from Figure 3a that all the prepared RPUFs exhibit the similar spectra, and there is no stretching vibration peak at around 2275 cm −1 for isocyanate (N=C=O) group, demonstrating that the isocyanate groups have reacted completely with polyols and water during polymerization [38]. Furthermore, two principal vibration regions for N-H stretching and C=O stretching band, with free (non-H-bonding), ordered (strongly H-bonding) and disordered (amorphous) states, can be observed in Figure 3b.…”

Section: Hydrogen Bonding States From Atr-ftirmentioning

confidence: 92%

Modification of Rigid Polyurethane Foams with the Addition of Nano-SiO2 or Lignocellulosic Biomass

et al. 2020

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Many achievements have been made on the research of composite polyurethane foams to improve their structure and mechanical properties, and the composite foams have been widely utilized in building insulation and furniture. In this work, rigid polyurethane foams (RPUFs) with the addition of different fillers (nano-SiO2, peanut shell, pine bark) were prepared through the one-step method. The effects of inorganic nano-SiO2 and organic biomass on foam properties were evaluated by means of physical and chemical characterization. The characterization results indicate that the compressive strength values of prepared foams could fully meet the specification requirement for the building insulation materials. The inorganic and organic fillers have no effect on the hydrogen bonding states in composite RPUFs. Furthermore, compared to the biomass fillers, the addition of nano-SiO2 greatly influenced the final residual content of the fabricated foam. All composite foams exhibit closed-cell structure with smaller cell size in comparison with the parent foam. The prepared composite foams have the potential for utilization in building insulation.

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Section: Hydrogen Bonding States From Atr-ftirmentioning

confidence: 92%

Modification of Rigid Polyurethane Foams with the Addition of Nano-SiO2 or Lignocellulosic Biomass

et al. 2020

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“…Thermal analysis was performed in dynamic synthetic air atmosphere in nitrogen (5.0 Linde Gas with flow 100 mL min -1 ) using a Diamond TG/DTA Perkin-Elmer, taking into account the experience of the authors in the field of thermal stability of polymers [11][12][13][14][15][16]. All the experiments were carried out from 25 up to 550°C, at heating rates b = 10°C min -1 .…”

Section: Methodsmentioning

confidence: 99%

Influence of the nature of the chain breaker on the thermal stability of phthalic anhydride-based polyesters

Modra

Vlase

Albu

et al. 2015

J Therm Anal Calorim

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This study presents the synthesis of polyesters obtained from phthalic anhydride as acidic components and one mixture of monoethylene glycol and monohydric alcohol (in ratio 1.1:0.15). Molar ratio of the acid component and alcohol component was 1:1.25. n-Propanol, n-butanol, n-octanol and isoamyl alcohol were used as monohydric alcohol. Physicochemical characterization was performed by elemental analysis, FTIR/UATR spectroscopy of polyesters and char, EGA (evolved gas analysis), thermal analysis in synthetic air and in nitrogen atmosphere.

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Thermal behaviour of the polyesters obtained with different molar ratios of carboxyl hydroxyl components

Albu

Vlase

Modra

et al. 2015

J Therm Anal Calorim

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Thermal behavior of some polyurethanes reticulated by aminated maltose

Cited by 11 publications

References 6 publications

Modification of Rigid Polyurethane Foams with the Addition of Nano-SiO2 or Lignocellulosic Biomass

Modification of Rigid Polyurethane Foams with the Addition of Nano-SiO2 or Lignocellulosic Biomass

Influence of the nature of the chain breaker on the thermal stability of phthalic anhydride-based polyesters

Thermal behaviour of the polyesters obtained with different molar ratios of carboxyl hydroxyl components

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