Influence of a urea–formaldehyde resin adhesive on pyrolysis characteristics and volatiles emission of poplar particleboard

Zhang, Y.; He, Zhongjie; Xue, Lei; Chu, Demiao; Mu, Jun

doi:10.1039/c5ra18068f

Cited by 24 publications

(22 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As the heating rate increases, the TG/DTG curves shift toward higher temperature (T), which could be attributed to the T gradient difference inside and outside the sample. Zhang et al [29] and Wang et al [30] found the same phenomenon. Additionally, affected by the mass transfer, the maximum mass loss rate from the DTG curve decreases and the hemicellulose shoulder gradually weakens or even disappears.…”

Section: Kinetic Analysismentioning

confidence: 58%

Effects of impregnation combined heat treatment on the pyrolysis behavior of poplar wood

Jin

Cai

et al. 2020

PLoS ONE

View full text Add to dashboard Cite

To investigate the effects of urea-formaldehyde (UF) resin impregnation combined heat treatment (IMPG-HT) on the pyrolysis behavior of poplar wood, the chemical composition, pyrolysis characteristics, pyrolysis kinetics, and gaseous products released during pyrolysis of untreated (control), IMPG-HT, IMPG and HT woods were analyzed. The results demonstrate that IMPG-HT changes pyrolysis behavior of poplar wood significantly. Unlike the control and HT samples, the thermogravimetric / derivative thermogravimetric (TG/DTG) curves of IMPG wood shift toward lower temperature, and the shoulder on DTG curves weaken or even disappear. The maximum mass loss rate of IMPG-HT samples decreases, and carbon residual yield increases to 23% or more and activation energy (E) increases sharply after conversion rate (α) reaching 0.80. HT improves the thermal stability of IMPG wood, which is represented by the increase of decomposition temperature (T d ) and DTG peak temperature (T peak ) and the higher E value of IMPG-HT wood. For the pyrolysis gaseous products, IMPG-HT wood produces nitrogen-containing gases (HNCO and NH 3 ) due to the presence of UF resin, but the amounts of these gases are less than that produced by IMPG wood because the heat treatment had removed part of N elements. (2020) Effects of impregnation combined heat treatment on the pyrolysis behavior of poplar wood. PLoS ONE 15(3): e0229907. https://doi.org/ 10.Effects of impregnation combined heat treatment on the pyrolysis behavior of poplar wood PLOS ONE | https://doi.org/10.1371/journal.pone.0229907 March 17, 2020 2 / 15 Fig 5. The linear fitting diagrams of IMPG-HT samples. (a) The linear fitting diagrams of IMPG-HT samples obtained by FWO method within the conversion range of 0.10<α<0.90; (b) The linear fitting diagrams of IMPG-HT samples obtained by KAS method within the conversion range of 0.10<α<0.90.

show abstract

Section: Kinetic Analysismentioning

confidence: 58%

Effects of impregnation combined heat treatment on the pyrolysis behavior of poplar wood

Jin

Cai

et al. 2020

PLoS ONE

View full text Add to dashboard Cite

show abstract

“…The pyrolysis liquids of wood-based panels contain a high content of nitric compounds, besides those Table 3. Main components of pyrolysis liquid of particleboard [1].…”

Section: Resultsmentioning

confidence: 99%

“…From GCMS analysis of the pyrolysis liquid of UF resin, it can be found that nitrogenous substances are the main components. Feng et al reported that the two most abundant components in pyrolysis liquids of UF resin are methyl-urea and N, N′-dimethyl-urea [17], while Zhang et al reported that the most relative content is N-ethylformamide [1]. In addition, other nitrogenous substances, such as 1-Methyl-2,4,5-trioxoimidazolidine, 2,3-Pyridinediamine, Pyrimidine,5-methyl-), urea, formyltrimethyl-, can also be detected in the pyrolysis liquid of UF resin.…”

Section: Liquidmentioning

confidence: 99%

“…Zhang et al [1] reported the plots of ln(β/T 2 ) versus 1/T at selected α for poplar, UF resin and particleboard, as presented in Figure 3. For every value of α, the three points corresponding to the three heating rates are positioned in a straight line, as the method predicts.…”

Section: Kinetic Studymentioning

confidence: 99%

“…The formation of nitric compounds in pyrolysis liquids originates from the conversion of urea in UF resins as applied in wood-based panels and the interaction between UF resin and wood [1]. The transformation of nitrogen-containing compounds is influenced by the interactions between UF resins and wood constituents.…”

Section: Liquidmentioning

confidence: 99%

See 2 more Smart Citations

Pyrolysis Characteristics of Wood-Based Panels and its Products

Mu¹,

Lai²

2017

Pyrolysis

View full text Add to dashboard Cite

Wood-based panels containing urea formaldehyde (UF) resin will be focused on to make clear the influence of UF resin on pyrolysis products and transformation mechanism during pyrolysis of waste wood composites. Thermogravimetric analysis (TGA) will be used to study the thermal degradation reaction kinetics according to different heating rate. Thermogravimetric analyzer coupled to a Fourier transform infrared spectrometer analysis (TGA-FTIR), X-ray photoelectron spectroscopy (XPS) and gas chromatography coupled with mass spectrometry (GCMS) will be used to study the gas, solid, liquid products, respectively. Results from TG and differential thermogravimetric analysis (DTG) indicate that UF resin at first accelerated the degradation rate however inhibited the degradation of wooden composites over the whole pyrolysis process. Compared with wood, UF resin had an obvious effect on the release of HNCO and NH 3 . Mass loss of hydrogen is significantly inhibited by UF resin and nitrogen is much stable in the char with structure of the pyridine and pyrrole at relative content of 6.65% and 7.45% respectively. Influence of UF resin on pyrolysis liquids of wooden composites is mainly on nitrogen compounds and ketones rather than aldehydes and esters, which is probably due to the chemical reactions of UF resin with lignin constituent in wood.

show abstract

Combustion behavior of furfurylated wood in the presence of montmorillonite and its char characteristics

et al. 2022

View full text Add to dashboard Cite

Influence of a urea–formaldehyde resin adhesive on pyrolysis characteristics and volatiles emission of poplar particleboard

Abstract: To investigate the influence of urea–formaldehyde resin (UF resin) adhesive on the thermal utilization of wood waste, the pyrolysis of particleboard and its main components (poplar and UF resin) are studied in this paper.

Cited by 24 publications

References 21 publications

Effects of impregnation combined heat treatment on the pyrolysis behavior of poplar wood

Effects of impregnation combined heat treatment on the pyrolysis behavior of poplar wood

Pyrolysis Characteristics of Wood-Based Panels and its Products

Combustion behavior of furfurylated wood in the presence of montmorillonite and its char characteristics

Contact Info

Product

Resources

About