Structural characterization of technical lignins for the production of adhesives: Application to lignosulfonate, kraft, soda-anthraquinone, organosolv and ethanol process lignins

Mansouri, Nour-Eddine El; Salvadó, Joan

doi:10.1016/j.indcrop.2005.10.002

Cited by 502 publications

(311 citation statements)

References 17 publications

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“…For the sake of application purposes, these results show the potential of both lignins valorisation towards producing bio-oil [29] or biomaterials [30], for example, and biological conversion due to application at mild conditions. In contrast, they do not provide good candidates for phenolformaldehyde resin synthesis, as the maximum rate loss within the nonmodified resins appears at 345°C [22] or other adhesives [31].…”

Section: Thermal Stabilitymentioning

confidence: 98%

Physicochemical Characterisation of Technical Lignins for Their Potential Valorisation

Abdelaziz

Hulteberg

2016

Waste Biomass Valor

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Lignin, the second most abundant natural polymer, has emerged as a potential alternative material to petroleum-based chemicals and renewable resource for the production of diverse forms of aromatics, biofuels, and biobased materials. Thus, it is becoming important to understand its structure and properties to provide key features and insights for better/efficient lignin valorisation. In this work, the physicochemical characterisation of two types of industrial (technical) lignins, namely LignoBoost lignin and alkali-treated lignin was performed. Characterisation has been conducted using Brunauer-Emmett-Teller N 2 adsorption, particle size distribution, Fourier transform infrared spectroscopy, ultraviolet-visible absorption spectroscopy, gel permeation chromatography, and thermogravimetric analysis. It was found that the pretreatment severity considerably influenced the lignin composition and functional properties. The measured physicochemical properties helped in proposing potential valorisation routes for these lignins in the context of a biorefinery, focusing on their depolymerisation and subsequent biological conversion to value-added chemicals and fuels.

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Section: Thermal Stabilitymentioning

confidence: 98%

Physicochemical Characterisation of Technical Lignins for Their Potential Valorisation

Abdelaziz

Hulteberg

2016

Waste Biomass Valor

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“…The percentage of carbon, hydrogen, and oxygen in the two lignin isolates The DBEs of the two lignin isolates were almost the same, which means that there was no effect of the lignin precipitate washings on the degree of lignin condensation and aromatic ring structure content of the lignin. The DBEs of the two lignin isolates obtained in this experiment were lower than those of the kraft and soda lignin of the EFB (4.679 and 3.727, respectively) [25] as well as the kraft, soda anthraquinone, and organosolve lignin reported by Mansouri et al [6].…”

Section: Resultsmentioning

confidence: 76%

“…So far, black liquor is only burned to produce energy for the boilers in pulp and paper plants [6]. The utilization of lignin from black liquor becomes more important due to the possibility of using lignocellulosic biomass for ethanol production [7,8].…”

Section: Introductionmentioning

confidence: 99%

Properties of Lignin from Oil Palm Empty Fruit Bunch and Its Application for Plywood Adhesive

Risanto¹,

Hermiati²,

Sudiyani³

2014

MST

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Lignin from lignocellulosic biomass is a potential biopolymer for wood adhesive. The aims of this study were to characterize lignin isolated from the black liquor of oil palm empty fruit bunch fiber pretreated with steam explosion in alkaline conditions and to examine the bond quality of aqueous polymer isocyanate (API) adhesive prepared from lignin, natural rubber latex (NRL), and polyvinyl alcohol (PVA) as base polymers with isocyanate crosslinkers. Lignin was precipitated from the black liquor by adding hydrochloric acid; then the precipitate was separated by filtration, thoroughly washed with water up to pH 2 and pH 5, and dried. The isolated lignin was characterized by ultimate analysis, UV spectroscopy, FT-IR spectroscopy, and thermal analysis. Three-layer plywood samples were prepared, and the bond strengths of the plywood samples were determined in dry conditions and after cyclic boiling. The lignin isolates with different pH values did not have significantly different chemical and thermal properties. Both lignin isolates had similar C, H, and O contents, identical functional groups in the FTIR spectra, similar absorption in the UV spectra, and high decomposition temperatures. The base polymers composition that could produce API adhesive for exterior applications was NRL/PVA/lignin (4/4/2). The use of more lignin in the adhesive formulation decreased the bond strength of the plywood. AbstrakSifat lignin dari tandan kosong kelapa sawit dan aplikasinya sebagai perekat kayu lapis. Lignin dari biomassa lignoselulosa merupakan biopolimer potensial untuk perekat kayu. Tujuan penelitian ini adalah untuk mengenali sifat lignin yang diisolasi dari lindi hitam sisa pretreatment steam explosion alkalis serat tandan kosong kelapa sawit, dan untuk menguji daya rekat perekat aqueous polymer isocyanatae (API) yang dibuat dari lignin, lateks karet alam (LKA) dan polivinil alkohol (PVA) sebagai polimer dasar dengan senyawa isosianat sebagai crosslinker. Lignin diendapkan dari lindi hitam dengan menambahkan asam klorida, setelah itu endapan dipisahkan dari larutan dengan penyaringan, dicuci dengan air sampai pH 2 dan pH 5, dan dikeringkan. Isolat lignin dikarakterisasi dengan analisis ultimat, spektroskopi UV, spektroskopi FT-IR, dan analisis termal. Kayu lapis (tiga lapisan) dibuat dari vinir kayu meranti (depan dan belakang) dan sengon (tengah) dan keteguhan rekatnya diuji pada kondisi kering dan setelah melalui perebusan berulang. Isolat lignin dengan pH yang berbeda tidak memberikan pengaruh nyata terhadap sifat kimia dan sifat termalnya. Kedua isolat lignin mempunyai kadar C, H, dan O yang mirip, gugus fungsi yang identik pada spektra FTIR, serapan yang mirip pada spektra UV, dan suhu dekomposisi yang tinggi. Komposisi polimer dasar yang dapat menghasilkan perekat API untuk aplikasi eksterior adalah LKA/PVA/lignin (4/4/2). Penggunaan lignin yang lebih banyak menurunkan keteguhan rekat kayu lapis.

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“…A major portion of industrial lignin is incinerated to produce steam and energy (Mohan et al 2006). However, the utilization of lignin as a fuel is not an economically viable option, and it has been underutilized industrially (El Mansouri and Salvadó 2006;Doherty et al 2011). Lignin is a crosslinked macromolecular material, based on three kinds of monolignols, and it can be blended with polymers (Lora and Glasser 2002).…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Corn Starch and Lignosulfonate Blend Film with a High Content of Lignosulfonate

Shi

2016

BioResources

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A degradable starch/lignin blend film was prepared using corn starch and sodium lignosulfonate via a casting and solvent evaporation method. The effect of sorbitol content on the swelling properties of starch/lignosulfonate blend films was investigated. The effect of lignosulfonate content on the swelling and mechanical properties was also studied. The results showed that when the mass ratio of sorbitol to starch changed over a wide range, from 0:9 to 9:9, the water absorption of the blend films increased at first and then decreased. When the mass ratio of lignosulfonate to starch changed in the same range, the ultimate stress of the blend films decreased markedly, while the water absorption and elongation at break did not show any regular pattern. When the mass ratios of sorbitol to starch and lignosulfonate to starch were both 6:9, the resultant film presented good elasticity and improved hydrophobicity compared to those without lignosulfonate.

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Structural characterization of technical lignins for the production of adhesives: Application to lignosulfonate, kraft, soda-anthraquinone, organosolv and ethanol process lignins

Cited by 502 publications

References 17 publications

Physicochemical Characterisation of Technical Lignins for Their Potential Valorisation

Physicochemical Characterisation of Technical Lignins for Their Potential Valorisation

Properties of Lignin from Oil Palm Empty Fruit Bunch and Its Application for Plywood Adhesive

Preparation and Characterization of Corn Starch and Lignosulfonate Blend Film with a High Content of Lignosulfonate

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