氯化胆碱/草酸低共熔溶剂处理对按木化学桨回用纤维性能的影响及其机制研究

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作者简介:,在读硕士研究生;研究方向:废纸纤维高效利用。
关键词:回用纤维;低共熔溶剂;纤维角质化;纸张性能 中图分类号:TS724 文献标识码:A DOI: 10.11980/j.issn.0254-508X.2025.12.017
Effects and Mechanismof Choline Chloride/Oxalic Acid Deep Eutectic Solvent Treatmenton theProperties of Recycled Fibers from Eucalyptus Chemical Pulp
WANG Li HUANG Junbo XUFeiLI JuanYU Zhensheng MO Wenxuan*LIU Baojie YAO Shuangquan LIANG Chen QIN Chengrong (College ofLight IndustryandFood Engineering,Guangxi KeyLabofCleanPulp &PapermakingandPollution Control, Guangxi University,Nanning,Guangxi Zhuang Autonomous Region,530004) (*E-mail: mowenxuan@gxu. edu. cn)
Abstract:Thisudyelucidatedtefectsofcholiechlordeoxalicacidpeutecticsolvents(DES)systemonthrecyledfirsro calyptusceicalpulpcudingchmicalomposition,morphologicalcaracterstis,ulrastructureandpicalpropertsofteper madefromthereccledfibers.TheresultsrevealedthatprologedDESexposureprogressivelyincreasedthecontentofcelloseandheicellulose in recycled fibers (by 1. 8% ,and 4.7% ,respectively),whilethe proportion of total lignin and ash decreased (by 21.9% ,and (204号 51.0% ,respectively).ThisDESsystempreferentiallytargetedanddisovedamorphouscelloseandfines,whichconsequentlyireased theoverallcaldexoflocatrixdprdisallisitiialc nessfibersnddeaseineonntoffns,promotingteocsallatioofcellose.Terefore,ewateretentiovaluofe fibersdecreasedby 29.2% ,indicatingthatthedegreeof hornification increased by 15.3% .Thisintensified fiberrigidityandbrittleness, which in turn severely compromised inter-fiberbondingand resulted inasignificantdegradationinphysical propertiesof thepaperexcept itsownstrength.The tensile index,burstingindex,and tear index decreased from 50.2 N·m/g, 5.21kPa⋅m2/g ,and to
全球造纸工业的快速发展导致对原生纤维素纤维的需求持续攀升,不仅对森林资源构成了日益增长的压力,也引发严峻的环境问题。(剩余16342字)