Matches in SemOpenAlex for { <https://semopenalex.org/work/W2077593166> ?p ?o ?g. }
Showing items 1 to 99 of
99
with 100 items per page.
- W2077593166 endingPage "3388" @default.
- W2077593166 startingPage "3380" @default.
- W2077593166 abstract "Lignin was extracted from white pine sawdust by organosolv-extraction using hot-compressed ethanol–water co-solvent. The optimum conditions for extracting lignin from the pine sawdust were found to be at 180 °C with ethanol–water solvent (1:1 wt/wt), where the lignin yield attained ca. 26% with a purity of ca. 83%. The lignin under such conditions was oligomers with a broad molecular weights distribution: Mn of 537, Mw of 1150 and polydispersity of 2.14. Bio-based phenol–formaldehyde resol resins were synthesized using the resultant lignin as the replacement of petroleum-based phenol at varying ratios from 25 to 75 wt.% by condensation polymerization catalyzed by sodium hydroxide. Upon heating the lignin–phenol–formaldehyde resols could solidify with a main exothermic peak at around 150–175 °C, typical of the conventional phenolic resol resins, and a secondary peak at 135–145 °C, likely due to the exothermic reactions between the free formaldehyde with phenol or lignin to form methylophenols. The replacement of phenol with lignin at a large ratio deferred the curing process, and the introduction of lignin in the resin formula decreased the thermal stability of the resin, leading to a lowered decomposition temperature and a reduced amount of carbon residue at elevated temperatures. For practical applications, it is suggested that the replacement ratio of phenol with lignin be less than 50 wt.%. The thermal stability can however be improved by purifying the lignin feedstock before the resin synthesis." @default.
- W2077593166 created "2016-06-24" @default.
- W2077593166 creator A5032965908 @default.
- W2077593166 creator A5078189262 @default.
- W2077593166 creator A5086152156 @default.
- W2077593166 date "2009-12-01" @default.
- W2077593166 modified "2023-10-07" @default.
- W2077593166 title "Synthesis of phenol–formaldehyde resol resins using organosolv pine lignins" @default.
- W2077593166 cites W1585964390 @default.
- W2077593166 cites W1964558493 @default.
- W2077593166 cites W1964740351 @default.
- W2077593166 cites W1964972228 @default.
- W2077593166 cites W1968081401 @default.
- W2077593166 cites W1978942224 @default.
- W2077593166 cites W1987172256 @default.
- W2077593166 cites W1989754614 @default.
- W2077593166 cites W2011368378 @default.
- W2077593166 cites W2017742924 @default.
- W2077593166 cites W2026899426 @default.
- W2077593166 cites W2027222902 @default.
- W2077593166 cites W2043827958 @default.
- W2077593166 cites W2046715863 @default.
- W2077593166 cites W2050976316 @default.
- W2077593166 cites W2052048760 @default.
- W2077593166 cites W2065808413 @default.
- W2077593166 cites W2067261049 @default.
- W2077593166 cites W2070258120 @default.
- W2077593166 cites W2076937896 @default.
- W2077593166 cites W2080013582 @default.
- W2077593166 cites W2086117473 @default.
- W2077593166 cites W2117746513 @default.
- W2077593166 cites W2147505960 @default.
- W2077593166 cites W2148175145 @default.
- W2077593166 cites W2158875217 @default.
- W2077593166 cites W2159297797 @default.
- W2077593166 doi "https://doi.org/10.1016/j.eurpolymj.2009.10.003" @default.
- W2077593166 hasPublicationYear "2009" @default.
- W2077593166 type Work @default.
- W2077593166 sameAs 2077593166 @default.
- W2077593166 citedByCount "241" @default.
- W2077593166 countsByYear W20775931662012 @default.
- W2077593166 countsByYear W20775931662013 @default.
- W2077593166 countsByYear W20775931662014 @default.
- W2077593166 countsByYear W20775931662015 @default.
- W2077593166 countsByYear W20775931662016 @default.
- W2077593166 countsByYear W20775931662017 @default.
- W2077593166 countsByYear W20775931662018 @default.
- W2077593166 countsByYear W20775931662019 @default.
- W2077593166 countsByYear W20775931662020 @default.
- W2077593166 countsByYear W20775931662021 @default.
- W2077593166 countsByYear W20775931662022 @default.
- W2077593166 countsByYear W20775931662023 @default.
- W2077593166 crossrefType "journal-article" @default.
- W2077593166 hasAuthorship W2077593166A5032965908 @default.
- W2077593166 hasAuthorship W2077593166A5078189262 @default.
- W2077593166 hasAuthorship W2077593166A5086152156 @default.
- W2077593166 hasConcept C13965031 @default.
- W2077593166 hasConcept C178790620 @default.
- W2077593166 hasConcept C185592680 @default.
- W2077593166 hasConcept C192562407 @default.
- W2077593166 hasConcept C2775930285 @default.
- W2077593166 hasConcept C2777702071 @default.
- W2077593166 hasConcept C2778562268 @default.
- W2077593166 hasConcept C2778790047 @default.
- W2077593166 hasConcept C2780308376 @default.
- W2077593166 hasConcept C2780761721 @default.
- W2077593166 hasConcept C2781052789 @default.
- W2077593166 hasConceptScore W2077593166C13965031 @default.
- W2077593166 hasConceptScore W2077593166C178790620 @default.
- W2077593166 hasConceptScore W2077593166C185592680 @default.
- W2077593166 hasConceptScore W2077593166C192562407 @default.
- W2077593166 hasConceptScore W2077593166C2775930285 @default.
- W2077593166 hasConceptScore W2077593166C2777702071 @default.
- W2077593166 hasConceptScore W2077593166C2778562268 @default.
- W2077593166 hasConceptScore W2077593166C2778790047 @default.
- W2077593166 hasConceptScore W2077593166C2780308376 @default.
- W2077593166 hasConceptScore W2077593166C2780761721 @default.
- W2077593166 hasConceptScore W2077593166C2781052789 @default.
- W2077593166 hasIssue "12" @default.
- W2077593166 hasLocation W20775931661 @default.
- W2077593166 hasOpenAccess W2077593166 @default.
- W2077593166 hasPrimaryLocation W20775931661 @default.
- W2077593166 hasRelatedWork W2159297797 @default.
- W2077593166 hasRelatedWork W2258578791 @default.
- W2077593166 hasRelatedWork W2354115114 @default.
- W2077593166 hasRelatedWork W2355818858 @default.
- W2077593166 hasRelatedWork W2368964735 @default.
- W2077593166 hasRelatedWork W2379094672 @default.
- W2077593166 hasRelatedWork W3136958157 @default.
- W2077593166 hasRelatedWork W3146421572 @default.
- W2077593166 hasRelatedWork W767735625 @default.
- W2077593166 hasRelatedWork W2315361562 @default.
- W2077593166 hasVolume "45" @default.
- W2077593166 isParatext "false" @default.
- W2077593166 isRetracted "false" @default.
- W2077593166 magId "2077593166" @default.
- W2077593166 workType "article" @default.