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时间:2020-04-24
《烟梗、烟末和烟棒的纤维特性-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、烟草科技/TobaccoScience&Technology烟草工艺/ManufacturingTechnology2014年第6期(总第323期)烟梗、烟末和烟棒的纤维特性刘晓峰,李友明。侯轶,陈冬海,陈景添华南理工大学制浆造纸工程国家重点实验室,广州市天河区五山路381号510640摘要:为研究造纸法再造烟叶原料——烟梗、烟末及烟棒的纤维特性,测定了它们的化学成分含量,分析了其纤维显微结构和纤维质量,考察了热水抽提前后原料表面形貌变化。结果表明:烟末和烟棒的纤维特性相近,与烟梗差别较大:①烟末和烟棒的灰分、热水抽出物和综纤维素在10%,59%和27%左右.与烟梗相差较大(
2、分别为12.30%,53.72%和27.04%);3种原料的聚戊糖和木质素含量相近,均在7%和9%左右。②3种原料经热水完全抽提后,细胞表面蜡质层消失,细胞壁明显变薄,纤维轮廓更清晰。③3种原料的纤维长度均较短,细小组分含量均较高。相比烟末和烟棒,烟梗原料的纤维质量较高,其质量平均长度为0.76mm,细小组分含量为20.6%。④根据再造烟叶原料的纤维特性差异,在再造烟叶制浆过程中,可以用不同的打浆条件处理不同纤维特性的原料,从而获得高质量的浆料;另外,在打浆过程中需控制浆料打浆力度,避免重度打浆。关键词:烟梗;烟末;烟棒;化学成分;表面形貌;显微结构;纤维形态;造纸法再造烟叶
3、中图分类号:TS452.6文献标识码:A文章编号:1002—0861(2014)06—0008—07FiberPropertiesofTobaccoStems,PowderandRodsLIUXiaofeng,LIYouming,HOUYi,CHENDonghai,andCHENJingtianStateKeyLaboratoryofPulpandPaperEngineering,SouthChinaUniversityofTechnology,Guangzhou510640,ChinaAbstract:Inordertostudythefiberpropertiesofra
4、wmaterialforpaper—makingprocessreconstitutedtobacco,thechemicalcomponentintobaccostems,powderandrodsweredetermined,theirfibermicrostructureandfiberqualitywereanalyzed,andthechangeoftheirsurfaceappearanceafterhotwaterextractionwasobserved.Theresultsshowedthatthefiberpropertyoftobaccopowderwa
5、ssimilartothatoftobaccorods,butdifferedfromthatoftobaccostemsobviously:1)Theash,hotwaterextracts,holocellulosecontentintobaccopowderandrodswerearound10%,59%,27%incontrastto12.3%,53.72%,27.04%instem,respectively.Thecontentsofpentosanandlignininthethreekindsofmaterialweresimilar(about7%and9%,
6、respectively).2)Uponthecompletionofhotwaterextraction,thewaxlayeroncellsurfacedisappeared,cellwallbecamethinner,andfiberprofilebecameclearer.31Thefiberlengthofthementionedmaterialwasshorter.thefinescontentwashigher.Comparingwithtobaccopowderandrods,thefiberqualityoftobaccostemswashigherwith
7、theweightedaveragelengthof0.76mmandthefinescontentof20.6%.41Theprocessofreconstitutedtobaccomakingatdifferentbeatingconditionsshouldadapttomaterial’Sfiberpropertiestoobtainqualitypulp.Inaddition,thebeatingdegreeshouldbecarefullycontrolledtoavoidover-beat
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