Structural transformations of triploid of Populus tomentosa Carr. lignin during auto-catalyzed ethanol organosolv pretreatment

Guo, Yanzhu; Zhou, Jinghui; Wen, Jia‐Long; Sun, Guangwei; Sun, Yijia

doi:10.1016/j.indcrop.2015.06.020

Cited by 73 publications

(55 citation statements)

References 38 publications

(41 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1, and the assignments of the FT-IR spectra in accordance with previous reports (Boeriu et al 2004;Guo et al 2015;Tong et al 2017) are shown in Table 2. The bands located at 1600 cm -1 and 1510 cm -1 in the W-EMAL and E-EMAL indicated the presence of benzene rings in the lignin structures, which confirmed that they were seldom destroyed during the separation process.…”

Section: Ft-ir Spectroscopysupporting

confidence: 82%

Analytical Pyrolysis Characteristics of Enzymatic/Mild Acidolysis Lignin (EMAL)

Lyu

Saeed

et al. 2018

BioResources

View full text Add to dashboard Cite

Fast pyrolysis is a promising method that is being investigated for application in the degradation of lignin into phenolic chemicals. In this study, enzymatic/mild acidolysis lignin (EMAL) isolated from eucalyptus (E-EMAL) and wheat straw (W-EMAL) were characterized by pyrolysisgas chromatography/mass spectrometry. The results showed that the compositions and yields of the products were determined by the lignin type and pyrolysis temperature. The identified products from the E-EMAL and W-EMAL pyrolysis mainly included G-phenols such as 2-methoxy-4-vinylphenol and guaiacol, S-phenols such as syringol and 2,6-dimmethoxy-4-(2-propenyl)-phenol, and H-phenols such as phenol, 2-methylphenol, and 4-vinylphenol. The overall yield of these phenolics varied with the investigated conditions. The G-and S-phenols were the primary products during the E-EMAL pyrolysis, while more H-phenols were produced during the W-EMAL pyrolysis. A compromise mild pyrolysis temperature of 450 °C to 650 °C resulted in a high phenolics yield, while a temperature greater than 650 °C led to the production of more aromatic hydrocarbons.

show abstract

Section: Ft-ir Spectroscopysupporting

confidence: 82%

Analytical Pyrolysis Characteristics of Enzymatic/Mild Acidolysis Lignin (EMAL)

Lyu

Saeed

et al. 2018

BioResources

View full text Add to dashboard Cite

show abstract

“…The thermostability of the DA polyadduct (sample DF 00:100), the epoxy network (sample DF 100:00), and their semi‐IPN (sample DF 50:50) was investigated by TGA and depicted in Figure . All the polymers exhibit a one‐step thermodegradation behavior with the main weight loss appeared at around 300–450 °C, presumably due to ether linkages thermal disconnection as well as the degradation of aromatic rings . The initial decomposition temperature and 10% weight loss temperature occurred between 300 and 380 °C.…”

Section: Resultsmentioning

confidence: 99%

Self‐healing semi‐IPN materials from epoxy resin by solvent‐free furan–maleimide Diels–Alder polymerization

Zolghadr

Shakeri

Zohuriaan‐Mehr³

et al. 2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

Novel self‐healing Diels–Alder (DA) polymer and the corresponding semi‐interpenetrated polymer networks (semi‐IPNs) were synthesized and characterized. Initially, a furan‐functionalized resin (FFR) was synthesized through the ring‐opening reaction of a conventional epoxy resin [diglycidyl ether bisphenol A (DGEBA)] with furfuryl alcohol as a bio‐based compound. Subsequently, semi‐IPNs with different compositions were obtained through the blending of DGEBA, FFR, 4,4′‐diaminodiphenylmethane, and 1,1′‐(methylenedi‐1,4‐phenylene) bismaleimide in the molten state by following a predetermined time–temperature program. Fourier transform infrared and nuclear magnetic resonance analyses confirmed the successful synthesis of the materials. Thermoreversibility via retro‐DA (rDA) reaction was evidenced by differential scanning calorimetry (DSC) and sol–gel transition tests. Repeated DSC cycle was successfully performed thrice on the DA polyadduct which corroborated repeatability of the DA/rDA association/dissociation. Self‐healing and mechanical properties were preliminarily evaluated by scanning electronic microscopy and flexural testing analyses, respectively. The self‐healing efficiencies were around 80 and 95% for semi‐IPN and DA polyadduct, respectively, based on flexural strength. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48015.

show abstract

“… Source : Agnihotri, Johnsen, Bøe, Øyaas, and Moe (), Chen, Zhao, Hu, Zhao, and Liu (), Guo, Zhou, Wen, Sun, and Sun, (), H. Zhang and Wu (), Hideno, Kawashima, Endo, Honda, and Morita (), Huijgen, Smit, Reith, and Uil (), Tang, Chen et al (), Tang, Shan et al (), Yu et al (), and Zhou et al ().…”

Section: Ethanol Organosolv Pretreatment and Enzymatic Hydrolysismentioning

confidence: 99%

“…Autocatalyzed ethanol organosolv pretreatment is a process performed at high temperature and pressure, catalyzed by acetic acid released from hydrolysis of acetyl groups on hemicellulose without external addition of catalysts to enhance the dissolution of lignin and degradation of hemicellulose (Guo et al, ; McDonough, ). In the past few decades, autocatalyzed pretreatment has been successfully applied to improving the enzymatic hydrolysis of lignocellulosic biomass, such as Eucalytus (Mou & Wu, ; Muñoz, Baeza, Freer, & Mendonça, ; Yáñez‐S et al, ), Triploid of Populus tomentosa Carr .…”

Section: Ethanol Organosolv Pretreatment and Enzymatic Hydrolysismentioning

confidence: 99%

“…In the past few decades, autocatalyzed pretreatment has been successfully applied to improving the enzymatic hydrolysis of lignocellulosic biomass, such as Eucalytus (Mou & Wu, ; Muñoz, Baeza, Freer, & Mendonça, ; Yáñez‐S et al, ), Triploid of Populus tomentosa Carr . (Guo et al, ), hybrid polar (Pan, Kadla, Ehara, Gilkes, & Saddler, ), olive tree biomass (Díaz et al, ), southwest birch (Wen, Xue, Sun, & Sun, ), bagasse (Wei, Wu, & Xu, ), and wheat straw (Chen et al, ). Muñoz et al () pretreated the tension and opposite wood of Eucalyptus globulus using 60% ethanol solution at 180°C and 200°C for 30–120 min.…”

Section: Ethanol Organosolv Pretreatment and Enzymatic Hydrolysismentioning

confidence: 99%

See 1 more Smart Citation

Lignocellulosic biomass to biofuels and biochemicals: A comprehensive review with a focus on ethanol organosolv pretreatment technology

Zhou

Lei

et al. 2018

Biotech & Bioengineering

137

View full text Add to dashboard Cite

Lignocellulosic biomass is one of the potential feedstocks to produce second-generation cellulosic ethanol and biochemicals. To enhance the enzymatic digestibility of lignocellulosic biomass for efficient enzymatic saccharification, a variety of pretreatment methods have been studied. Among these, organosolv pretreatment using ethanol is a promising pretreatment method owing to its inherent advantages, such as low solvent cost, lack of toxicity, the ability to retain most cellulose fraction in substrates for enzymatic hydrolysis, coproduction of high-purity lignin and hemicellulosic sugars, easy solvent recovery, and reuse. In this review, the research progress regarding different types of ethanol organosolv pretreatment processes has been summarized in terms of methods, substrate properties, reaction mechanisms, delignification kinetic as well as the impact of pretreatment methods on the enzymatic digestibility. Attempts are also made to provide insights into the complete utilization of lignocellulosic biomass to achieve high potential revenues. Though some ethanol organosolv processes have been studied or are being developed towards commercialization, ethanol organosolv pretreatment is still facing some challenges. Finally, the direction for future work is given to develop a proper ethanol organosolv pretreatment for commercialization.

show abstract

Structural transformations of triploid of Populus tomentosa Carr. lignin during auto-catalyzed ethanol organosolv pretreatment

Cited by 73 publications

References 38 publications

Analytical Pyrolysis Characteristics of Enzymatic/Mild Acidolysis Lignin (EMAL)

Analytical Pyrolysis Characteristics of Enzymatic/Mild Acidolysis Lignin (EMAL)

Self‐healing semi‐IPN materials from epoxy resin by solvent‐free furan–maleimide Diels–Alder polymerization

Lignocellulosic biomass to biofuels and biochemicals: A comprehensive review with a focus on ethanol organosolv pretreatment technology

Contact Info

Product

Resources

About