膨胀叶丝微观结构的sem表征 - 烟草科技.pdfVIP

/TobaccoScienceTechnology /ManufacturingTechnology 2009 1( 258 ) SEM 　, 　, , , 烟草行业烟草工艺重点实验室,郑州高新技术产业开发区枫杨街 2 号　45000 1 :膨胀叶丝;扫描 镜(SEM);孔隙结构;膨胀率 :利用扫描 子显微镜 (SEM)观察了叶丝膨胀前后的表面和断面显微结构变化, 对不同膨胀强度 下叶丝断面的 SEM照片进行图像处理与数据分析,结果表明:未膨胀的叶丝组织结构紧密,表皮细胞向 内凹陷,呈褶皱状;膨胀后的叶丝组织结构疏松,表皮细胞向外凸出,表面光滑、褶皱减少;随着膨胀强度 的增加, 孔隙直径4 μm的孔隙数量减少, 孔隙直径4 μm的孔隙数量增加。 孔隙直径6 μm的孔 隙总面积减小, 孔隙直径6 μm的孔隙总面积增加。对于 CO膨胀叶丝, 孔隙直径2 μm时孔隙数量 2 和孔隙总面积与叶丝的膨胀率线性关系极显著。对于科创膨胀叶丝, 孔隙直径为 2 ～4 μm时孔隙数量 和孔隙总面积与叶丝的膨胀率线性关系极显著。 :TS412　:B　:1002 -0861 (2009 )0 1-0014-04 CharacterizationofMicrostructureofExpandedCutTobaccobySEM KONGZHEN, LIBIN, CHANGJI-HENG, LINYU-HONG, andQIAOXUE-YI KeyLaboratoryofTobaccoProcessingTechnology, CNTC, Zhengzhou450001, China Keyword:sExpandedcuttobacco;ScanningElectronMicroscope(SEM);Porestructur;eExpansionrate Abstrac:tThesurfaceandsectionalmicrostructureofcuttobaccowasobservedbySEM beforeandafter expanding, andmiageprocessingofthesectionalmicrostructurephotographsofcuttobaccoexpandedatdiffe- rentexpansionrateswerecarriedou.tTheresultsshowedtha:t1)thestructureofcuttobaccobeforeexpansion wastightandwithrecessedandwrinledepidermalcell,swhilethatofexpandedcuttobaccowasopenand withprotrudingepidermalcellsofsmoothsurfaceandlesswrinle;s2 )withtheincreaseofexpansionrate,s thenumberofpore4 μmindiameterandtheareaoccupiedbypores6 μmindiameterdecreased, while thenumberofpore4 μmindiameterandtheareaoccupiedbypores6 μmindiameterincreased;3 )for CO expandedcuttobacco, therewasasignificantlinearrelationshipbetweenexpansionrateandthenumber 2 ofandareaoccupiedbyporewhosediameterwas2 μm;andforKECHUANGexpandedcuttobacco, there wasasignificantlinearrelationshipbetweenexpansionrateandthenumberofandareaoccupiedbypore whosediameterwas2 -4 μm. [1-4] 　　 ,, , SEM, SEM : , “()