Liquefaction of Red Pine Wood, <i>Pinus densiflora</i> , Biomass Using Peg-400-Blended Crude Glycerol for Biopolyol and Biopolyurethane Production

Lee, Yu‐Mi; Lee, Eun Yeol

doi:10.1080/02773813.2016.1156132

Cited by 19 publications

(3 citation statements)

References 31 publications

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“…The reaction time is a very important parameter. Usually, the lignocellulose biomass requires a depolymerization reaction time that is between 5 and 40 min, in the case of conventional heating processes [ 55 , 56 ]. The reaction time can be reduced using process intensification strategies such as microwave heating [ 57 , 58 ].…”

Section: Influence Of the Reaction Parameters On The Lignocellulose S...mentioning

confidence: 99%

Lignocellulose Biomass Liquefaction: Process and Applications Development as Polyurethane Foams

et al. 2023

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One of the main strategies for sustainable human society progress is the development of efficient strategies to limit waste production and maximize renewable resource utilization. In this context, this review highlights the opportunity to transform vegetable biomass residues into valuable commercial products. Biomass conversion entails the depolymerization of lignocellulosic biomass towards biopolyols and the synthesis and characterization of the valuable products obtained by using them. The influence of the reaction parameters in both acid and basic catalysis is highlighted, respectively the influence of microwaves on the liquefaction reaction versus conventional heating. Following the depolymerization reaction, polyols are employed to produce polyurethane foams. As a special characteristic, the addition of flame-retardant properties was emphasized. Another interesting topic is the biodegradability of these products, considering the negative consequences that waste accumulation has on the environment.

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Section: Influence Of the Reaction Parameters On The Lignocellulose S...mentioning

confidence: 99%

Lignocellulose Biomass Liquefaction: Process and Applications Development as Polyurethane Foams

et al. 2023

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“…The liquefaction can be carried out with polyhydric alcohols as solvent and with or without catalyst to convert the lignocellulosic material to a polyol rich in OH groups, making it much more reactive. Red pine wood [3], acid hydrolysis residue (AHR) of corn [4], enzymatic hydrolysis lignin (EHL) [5] and oil palm empty fruit bunch [6] are some of liquefied lignocellulosic materials mentioned in the literature using alcohols solvents and sulphuric acid as catalyst. In the literature, some works have been also reported about the potential use of Kraft lignin in liquefaction process using acid-based and metal oxide catalysts [7,8].…”

Section: Introductionmentioning

confidence: 99%

Liquefaction o Kraft Lignin at Atmospheric Pressure

Silva¹,

Santos²,

Gatto³

et al. 2019

Journal of Renewable Materials

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Kraft lignin was liquefied using polyethylene glycol #400 (PEG) and glycerol (G) in a weight ratio of 80/20 (w/w) and sulphuric acid (SA) as catalyst under atmospheric pressure at 160ºC. The three independent variables: reaction time (60, 80 and 100 min), percentage of lignin (15, 20 and 25%, w/w), and catalyst concentration (0, 3 and 6%, w/w), were varied resulting in 27 experimental runs. The effect of these reaction conditions on the properties of the polyols was evaluated. The statistical analysis showed that only "the percentage of lignin" did not influence the properties of the liquefied products, however, reaction time and catalyst load were important parameters. The resulting liquefied products were characterized by FTIR analysis.

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“…As shown in Figure 3 , the biomass conversion gradually decreased when the biomass loading increased from 5% to 40%. The dwindling of the conversion rate is mainly due to the insufficiency of the solvent for dispersing and liquefying biomass [ 18 , 28 ]. As the biomass loading increased from 15% to 20%, it can be observed that the biomass conversion was probably similar, around 66%.…”

Section: Resultsmentioning

confidence: 99%

Microwave-Assisted Two-Step Liquefaction of Acetone-Soluble Lignin of Silvergrass Saccharification Residue for Production of Biopolyol and Biopolyurethane

Tran

Lee

2021

Polymers

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The application of microwave heating facilitated efficient two-step liquefaction of acetone-soluble lignin obtained from saccharification residue of Miscanthus sacchariflorus (silvergrass), which was prepared by enzymatic hydrolysis, to produce biopolyol with a low acid number and favorable hydroxyl number. The acetone-soluble lignin was liquefied using a crude glycerol and 1,4-butanediol solvent mixture at various solvent blending ratios, biomass loadings, acid loadings, and reaction temperatures. The optimal reaction condition was determined at a solvent blending ratio of crude glycerol to 1,4-butanediol of 1:2, 20% of biomass loading, and 1% of catalyst loading at a reaction temperature of 140 °C for 10 min. Subsequently, the optimal biopolyol was directly used for the preparation of biopolyurethane foam as a value-added product. The chemical and physical properties of biopolyurethane foams derived from acetone-soluble lignin were characterized by Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and high-resolution scanning electron microscopy (HR-SEM). In addition, mechanical properties of produced biopolyurethane foams, including compressive strength and density, were also characterized to suggest their appropriate applications. The results indicated that the biopolyurethane foam can be used as a green replacement for petroleum-based polyurethane foam due to its comparable thermal properties, mechanical strength, and morphological structure.

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Liquefaction of Red Pine Wood, Pinus densiflora , Biomass Using Peg-400-Blended Crude Glycerol for Biopolyol and Biopolyurethane Production

Cited by 19 publications

References 31 publications

Lignocellulose Biomass Liquefaction: Process and Applications Development as Polyurethane Foams

Lignocellulose Biomass Liquefaction: Process and Applications Development as Polyurethane Foams

Liquefaction o Kraft Lignin at Atmospheric Pressure

Microwave-Assisted Two-Step Liquefaction of Acetone-Soluble Lignin of Silvergrass Saccharification Residue for Production of Biopolyol and Biopolyurethane

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