蔗渣礦質(zhì)元素的分布、轉(zhuǎn)移及蔗稈皮層超微結(jié)構(gòu)的研究.pdf

1、華南理工大學(xué)碩士學(xué)位論文蔗渣礦質(zhì)元素的分布、轉(zhuǎn)移及蔗稈皮層超微結(jié)構(gòu)的研究姓名：黃斌申請學(xué)位級別：碩士專業(yè)：制漿造紙工程指導(dǎo)教師：邱玉桂20030501華南理工大學(xué)工學(xué)碩士學(xué)位論文AbstractBagasse，asourresearchobject，isscreenedanditscommonchemicalcompositionsareanalyzedBymeansofatomic—absorptionspectrometerandS

2、EMEDAX，wedeterminethemineralelementsofrawmaterial，pulpscreenedandwithoutscreeningaswellastheirblackliquorWithSEM—EDAX，themicrostructures，thedistributionofmineralelementsandtheirchangesduringpulpingprocessareallstudiedTwo

3、kindsofpulpsscreenedandwithoutscreeningarecomparedfromaspectsoftheircommonqualitiesandphysicalpropertiesBeside，thecarboxylandseveralchromophoresofcarbohydratearemeasuredAtlast，wemakeaprimaryresearchontheorganicsilicongro

4、upsofbagassecuticleutilizinginfraredabsorbancespectrumExperimentresultsshowthatthechemicalcompositionsofrawmaterialsfromdifferentscreengradechangeinaregularwayWithincreasingofscreenmesh，thegranularityofsamplefinesaway，si

5、multaneouslythecontentsofashes，extractsandmineralelementsareimprovedTherefore，it’Snecessarytoenhancethepretreatmentofrawmaterialsandtrytemovetheparenchymawithmuchmineralelements，whichwillbenefitthepulping，bleachingandalk

6、alinerecovery，etcIt’Srevealedthat，thereexistacomplexsystemofmineralionsinunbleachedpulp，anditsspeciesandcontentsseemtobeincloserelationshipwithrawmaterialsAftercookingandwashing，mineralelementswilltransferfromrawmaterial

7、stoblackliquorindifferentdegreesSiandAIhavethehighesttransferrateThecontentsofmineralelementsinunbleachedpulp，whichhaveanimportanteffectonbleaching，declineduetobeingscreenedWhenthecookingtimeextended，HexAandsomeotherchro

8、mophoresofcarbohydratearedecreasing，whileit’ScontrarytocarboxylThehigherthefibercontentinscreenedpulpis，thebetterpulpqualitiesaresuchaswhitebrightness，KappanumberandyieldcomparedwiththepulpwithoutscreeningTheimprovedaver

9、agelengthoffibersincreasesthefiltrationproperty，tensilestrength，tearingstrength，burstingstrength，elongationandSOonThestudyofbagassecuticlewithSEM—EDAXtellsthat，asacomplicatedandcompactlamella，thebagassecuticleismadeupofs