Matches in SemOpenAlex for { <https://semopenalex.org/work/W3039249692> ?p ?o ?g. }
- W3039249692 abstract "Conversion of technical lignin into performance biopolymers such as polyurethane offers environmental and economic advantages when combined with production of biofuels from biomass sugars, presenting significant interest towards studying the role of pretreatment on lignin structure and functionality. Co-solvent enhanced lignocellulosic fractionation (CELF) pretreatment, employing acidic aqueous tetrahydrofuran (THF) mixtures, was developed to effectively break down the lignin-carbohydrate matrix and promote extraction of lignin from lignocellulosic biomass with desirable purity and yield. In this study, we report on the effects of CELF pretreatment reaction severity on the molecular structure of CELF-extracted lignin and its impact towards the mechanical properties of resulting lignin-polyurethanes. Reaction temperature was found to play the most significant role, compared to reaction time and acidity, in manipulating structural features such as molecular weight, functionality and intra-polymer structure. At the severe reaction conditions at 180 °C, the order of reactivity for primary lignin interlinkages characterized by semiquantitative HSQC NMR analysis were found to be -ether > phenylcoumaran (5’) > resinol (’) facilitating a high degree of depolymerization yielding a high frequency of free phenolics and reduced aliphatic hydroxyl groups. All side-chain interlinkages were depleted converting guaiacyl subunits into condensed forms, while retaining more uncondensed syringyl subunits. Under the mild 150 °C temperature reaction, CELF lignin had higher molecular weight and retained more -ether interlinkages. The results from CELF lignin-based polyurethane synthesis indicated that the tensile properties depended on the miscibility of CELF lignin with other components and low molecular weight cuts improved the dispersion of lignin in the polyurethane network. Pre-mixing of CELF with poly(ethylene glycol) (PEG) reduced the brittleness and improved the ductility of the CL-PEG polyurethanes." @default.
- W3039249692 created "2020-07-10" @default.
- W3039249692 creator A5001191623 @default.
- W3039249692 creator A5015929467 @default.
- W3039249692 creator A5025247379 @default.
- W3039249692 creator A5025316872 @default.
- W3039249692 creator A5026297338 @default.
- W3039249692 creator A5032786004 @default.
- W3039249692 creator A5038999513 @default.
- W3039249692 date "2020-07-08" @default.
- W3039249692 modified "2023-10-12" @default.
- W3039249692 title "Effects of CELF Pretreatment Severity on Lignin Structure and the Lignin-Based Polyurethane Properties" @default.
- W3039249692 cites W1928947228 @default.
- W3039249692 cites W1953628731 @default.
- W3039249692 cites W1982267818 @default.
- W3039249692 cites W1982334532 @default.
- W3039249692 cites W1985879756 @default.
- W3039249692 cites W1998548865 @default.
- W3039249692 cites W2003738957 @default.
- W3039249692 cites W2017004908 @default.
- W3039249692 cites W2037565039 @default.
- W3039249692 cites W2039738806 @default.
- W3039249692 cites W2070007739 @default.
- W3039249692 cites W2070802031 @default.
- W3039249692 cites W2072407288 @default.
- W3039249692 cites W2079497711 @default.
- W3039249692 cites W2084730110 @default.
- W3039249692 cites W2105503244 @default.
- W3039249692 cites W2108659500 @default.
- W3039249692 cites W2118384589 @default.
- W3039249692 cites W2128404817 @default.
- W3039249692 cites W2170485159 @default.
- W3039249692 cites W2171342480 @default.
- W3039249692 cites W2184379384 @default.
- W3039249692 cites W2252999607 @default.
- W3039249692 cites W2494460013 @default.
- W3039249692 cites W2734593452 @default.
- W3039249692 cites W2765969783 @default.
- W3039249692 cites W2767682145 @default.
- W3039249692 cites W2792511275 @default.
- W3039249692 cites W2798227025 @default.
- W3039249692 cites W2801940059 @default.
- W3039249692 cites W2803089724 @default.
- W3039249692 cites W2803961338 @default.
- W3039249692 cites W2809962767 @default.
- W3039249692 cites W2892696957 @default.
- W3039249692 cites W2893465898 @default.
- W3039249692 cites W2897372755 @default.
- W3039249692 cites W2916144252 @default.
- W3039249692 cites W2948262651 @default.
- W3039249692 cites W2965871288 @default.
- W3039249692 cites W3015666820 @default.
- W3039249692 doi "https://doi.org/10.3389/fenrg.2020.00149" @default.
- W3039249692 hasPublicationYear "2020" @default.
- W3039249692 type Work @default.
- W3039249692 sameAs 3039249692 @default.
- W3039249692 citedByCount "15" @default.
- W3039249692 countsByYear W30392496922021 @default.
- W3039249692 countsByYear W30392496922022 @default.
- W3039249692 countsByYear W30392496922023 @default.
- W3039249692 crossrefType "journal-article" @default.
- W3039249692 hasAuthorship W3039249692A5001191623 @default.
- W3039249692 hasAuthorship W3039249692A5015929467 @default.
- W3039249692 hasAuthorship W3039249692A5025247379 @default.
- W3039249692 hasAuthorship W3039249692A5025316872 @default.
- W3039249692 hasAuthorship W3039249692A5026297338 @default.
- W3039249692 hasAuthorship W3039249692A5032786004 @default.
- W3039249692 hasAuthorship W3039249692A5038999513 @default.
- W3039249692 hasBestOaLocation W30392496921 @default.
- W3039249692 hasConcept C127413603 @default.
- W3039249692 hasConcept C178790620 @default.
- W3039249692 hasConcept C185592680 @default.
- W3039249692 hasConcept C188027245 @default.
- W3039249692 hasConcept C192562407 @default.
- W3039249692 hasConcept C2779578285 @default.
- W3039249692 hasConcept C2781052789 @default.
- W3039249692 hasConcept C42360764 @default.
- W3039249692 hasConceptScore W3039249692C127413603 @default.
- W3039249692 hasConceptScore W3039249692C178790620 @default.
- W3039249692 hasConceptScore W3039249692C185592680 @default.
- W3039249692 hasConceptScore W3039249692C188027245 @default.
- W3039249692 hasConceptScore W3039249692C192562407 @default.
- W3039249692 hasConceptScore W3039249692C2779578285 @default.
- W3039249692 hasConceptScore W3039249692C2781052789 @default.
- W3039249692 hasConceptScore W3039249692C42360764 @default.
- W3039249692 hasFunder F4320332605 @default.
- W3039249692 hasLocation W30392496921 @default.
- W3039249692 hasLocation W30392496922 @default.
- W3039249692 hasLocation W30392496923 @default.
- W3039249692 hasOpenAccess W3039249692 @default.
- W3039249692 hasPrimaryLocation W30392496921 @default.
- W3039249692 hasRelatedWork W2008948107 @default.
- W3039249692 hasRelatedWork W2285666791 @default.
- W3039249692 hasRelatedWork W2332575849 @default.
- W3039249692 hasRelatedWork W2384963716 @default.
- W3039249692 hasRelatedWork W2390193759 @default.
- W3039249692 hasRelatedWork W2619853616 @default.
- W3039249692 hasRelatedWork W2748952813 @default.
- W3039249692 hasRelatedWork W2899084033 @default.
- W3039249692 hasRelatedWork W2994301231 @default.