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简介：Tetradecyldimethylbenzylammoniumsalt(TDMBA)cationswereintercalatedintosodiummontmorillonite(Na-MMT)byanionexchangereaction.TheresultingTDMBA-MMTwascharacterizedbyFourier-transforminfraredspectroscopy(FTIR),thermogravimetricanalysis(TGA),andX-raydiffraction(XRD).Moreover,theantibacterialactivityandwater-resistanceofTDMBA-MMTwereinvestigated.TheresultsshowthatTDMBAcationsareintercalatedintotheNa-MMT.TheonsettemperatureofdecompositionofTDMBAcationsinTDMBA-MMTisraisedabout60℃higherthanthatoftetradecyldimethylbenzylammoniumchloride(TDMBACl),andthed_((001))spacingenlargedfrom1.23nmto2.10nm.0.1mg/mLTDMBA-MMTisfullyenoughtokillalltheStaphylococciaureus(S.aureus)andmorethan99.99%oftheEscherichiacoli(E.coli)inasamplesolutionwithin6.0htouch,andtheTDMBA-MMTalsoshowslongactingproperties.

简介：Bothinorganicandorganicpillaredmontmorilloniteswereusedtoadsorbphenol.BatchkineticsandisothermstudieswerecarriedouttoevaluatetheeffectofequilibriumtimeandpHonadsorptionofphenolbymontmorillouitesandre-adsorbingcharacteristicsofpillaredmontmorillonites.TheadsorptionofphenolincreasedwithincreasingsolutionpHvalues.Theeliminationratioofphenolfromthesolutionbytheabsorptionoforganicmodifiedpillaredmontmorillonite(OrPMt)reachedequilibriumquicklyaftervibratingfor5minutes.Meanwhilefororganicmontmorillonite(OrMt),pillaredmontmorillouite(PMt)andmontmorillonite(Mt),thetimetoreachphenol-absorptionequilibriumwere20,30and90minutes,respectively.Theadsorbingcapacityofthepillaredmontmorillonitemodifiedwithsurfactantimprovedgreatly.Thephenol-adsorbingcapacityofpillaredmontmorillonitesmainlydependedonmicroporousstructureandsurfacecomponentofthemodifiedclays.Aftercalcinationat500℃,thepillarstructureandthebasalspacing(1.83nm)werestillstable.Sothepillaredmontmorillonitecouldberecycled,anditwasapotentialmaterialforadsorbingenvironmentalpollutants.

简介：Al-pillaredinterlayeredmontmorillonite(Al-PILM)waspreparedusingtheartificialNa-montmorillonitefromtheQingfengshanbentonitemineasastartingmaterialmixedwithAl-pillaringsolutions.ThemicrostructureofthematerialswasstndiedbyanX-raypowderdiffractometerandaFouriertransforminfrared(FTIR)spectrometer.Theresultsindicatedthatthebasalspacing[d(001)value]ofthematerialswasincreasedsignificantlyto1.9194nmrelativetoNa-montmorillonite(1.2182nm).Aftercalcinedfor2hat300℃,thebasalspacingwasstabilizedat1.8394nmandthelayeredstructureofthematerialswasnotdestroyed.Thermalanalysiswasconductedbyathermalgravimetryanddifferentialthermalanalysis(TG-DTA)instrument,itshowedthatAl-PILMlostphysicallyadsorbedwaterbelow230.6℃andwaterformedbydehydroxylationofthepillarsataround497.1℃,withapeakofthephasetransformationat903.0℃.

简介：Tensiledeformationandfracturecharacteristicsofpolyimide/montmorillonitenanocompositefilmsareinvestigatedtoenhancetheparticularmechanicalpropertiesandunderstandtheeffectivefactorsindominatingthemechanicalpropertiesofnanocomposites,suchasthenanolayer,matrixandnanolayer/matrixinterface.Howtocontributetothemechanicalpropertiesofnanocompositefilmisaverycomplexproblem.Inthispaper,thesefactorsareanalyzedbasedontheadditionamountandfracturemechanics.Theresultsindicatethatthespecimenat20wt%MMTbreaksprematurelywithafracturestrength(σb=78MPa)muchlowerthanthat(σb=128MPa)atthe1wt%MMT.However,theYoung'smodulus(3.2GPa)oftheformerishigherthanthat(1.9GPa)ofthelatter.Fractographyalsoindicatesthatthebrittlecrackingformedinhighcontentadditionisthemaincauseoffailurebutmicroscopicallyductilefracturemorphologystillexistslocally.Andforthetraceelementaddition,thesmallerthreadingslippingveinsareevenlydistributedontheentirefracturesectionofthesefilms.Therefore,thesecharacteristicswouldpresumablybeassociatedwithboththeconcentrationeffectsofsizeofnanocompositesheetsandtheincreasingdeformationharmonyinnanolayers.

简介：Theepoxynanocompositeswithsimilaramines(CH_3(CH_2)_(17)NH_2andCH_3(CH_2)_(17)N(CH_3)_3CI)treatedmontmorilloniteclayshavebeeninvestigatedbywide-angleX-rayscattering,transmissionelectronmicroscopy(TEM),differentialscanningcalorimetry(DSC)andthermalgravimetricanalysis(TGA).Differentnanocompositestructures,intercalationandexfoliationwereformedbythereactionofoctadecyltrimethylammoniumchloride-exchangedandoctadecylamine-exchangedclayswithepoxyresinandphenalkamineasthecuringagent,respectively.Resultsshowedthattheexfoliatednanocompositecanbeobtainedwhenoctadecylaminewiththelowerpolaritywasusedasamodifier.However,theintercalatednanocompositecanbeobtainedwhenoctadecyltrimethylammoniumchloridewithhigherpolaritywasusedasamodifier.

简介：Thisstudyinvestigatedtheinfluenceofvariousorganicallymodifiedmontmorillonites(organoclays)onthestructureandpropertiesofrigidpolyurethanefoam(RPUF)nanocomposites.Theorganoclaysweremodifiedwithcetyltrimethylammoniumbromide(CTAB),methyltallowbis(2-hydroxyethyl)quaternaryammoniumchloride(MT2ETOH)andtris(hydroxymethyl)aminomethane(THMA)anddenotedasCMMT,Cloisite30BandOMMT,respectively.MT2ETOHandTHMAcontainhydroxylgroups,whileTHMAdoesnothavelongaliphatictailinitsmolecule.X-raydiffractionandtransmissionelectronmicroscopyshowthatOMMTandCloisite30BcanbepartiallyexfoliatedintheRPUFnanocompositesbecausetheirintercalatingagentsMT2ETOHandTHMAcanreactwithisocyanate.However,CMMTmodifiedwithnonreactiveCTABismainlyintercalatedintheRPUFmatrices.Atarelativelylowfillercontent,theRPUF/CMMTcompositefoamhasahigherspecificcompressivestrength(theratioofcompressivestrengthagainsttheapparentdensityofthefoams),whileatrelativelyhighfillercontents,RPUF/Cloisite30BandRPUF/OMMTcompositeshavehigherspecificcompressivestrengths,highermodulusandmoreuniformporesizethantheRPUF/CMMTcomposite.

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简介：一种慢版本装载药的microspheres被一个乳化/化学药品cross-linking方法作为是的crosslinking代理人和acyclovir用glutaraldehyde与明胶，chitosan和montmorillonite(MMT)准备模型药。microspheres被X光检查衍射(XRD)描绘，Fourier变换红外线(英尺红外)并且分别地扫描电子显微镜学(SEM)。形态学，药内容，封装效率和药版本行为与不同MMT内容被调查。试验性的结果显示那设置的microspheres能被准备，microspheres的形态学被MMT显著地影响。因为MMT的物理cross-linking，使不交叉连接microspheres的成球状表演被改进。当增加时，药内容和封装效率被减少MMT的内容，而是爆炸版本和药版本cantly是signifi与MMT的增加减少了。当增加的MMT，和MMT能减少有毒的化学cross-linking代理人的内容时，有效物理cross-linking能被形成。

简介：Amontmorilloniteinorgano-intercalationcompound(MIIC)wassynthesizedbyusingapurifiedNa-exchangedbentonite(PNaB)asamatrixandAl-pillaringionasanintercalatingreagentundermicrowaveirradiation.ThesynthesizedproductswerecharacterizedbyX-raydiffraction(XRD),27Almagicanglesample-spinningnuclearmagneticresonance(27AlMASNMR),specificsurfacearea(BET)measurement,andadsorptiondensitydetermination.Theresultsshowthat,at5%solid(PNaB)concentrationand7minutesirradiationina130Wmicrowaveoven,thebasalspacingd(001)ofthesynthesizedMIICincreasesto1.740nmfromtheoriginal1.218nmofPNaB.TheMIIChasmuchhigheradsorptivedensitiestoF-andCr6+fromaqueoussolutionthanthePNaB.TheadsorptionisothermofF-ontheMIICfollowstheFreundlichequation,andtheincreasedadsorptionismainlyduetotheporousstructureoftheMIICwhichcreatedlargeradsorptionsurfaces.TheadsorptionisothermofCr6+onMIICfollowstheLangmuirequationandtheadsorptionismainlymonolayerasaresultofchemisorptions.

简介：Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/Organophilicmontmorillonite(PHBV/OMMT)nanocompositeswerepreparedandthebiodegradabilityofthePHBV/OMMTnanocompositeswasstudiedbyacultivationdegradingmethodinsoilsuspension.TherelationshipbetweenstructureandbiodegradabilityofPHBV/OMMTnanocompositeswasinvestigated.TheresultsshowedthatthebiodegradabilityofPHBV/OMMTnanocompositesdecreasedwithincreasingamountofOMMTanditwasrelatedtothenumberofPHBVdegradingmicroorganismsindegradationenvironment,theanti-microbialpropertyofOMMTandthedegreeofcrystallinityofthenanocomposites.

简介：与超声的助理混合方法，polyol/organo的设置的混合物反应montmorillonite(ORMMT)是pretreated。prepolymer填写了MMT泥土被polyol/ORMMT混合的反应与甲苯diisocyanate(TDI)准备。结果的prepolymer与扩展程序(DMTDA)然后polyurethane-urea/organo反应了反应montmorillonite(PUU/ORMMT)nanocomposites被获得。PUU/ORMMTnanocomposites的结构，形态学和性质被英尺红外，TEM，AFM，紧张压力机器，TGA，和动态机械分析(直接存储器存取)描绘。结果证明当OMMT内容是3%时，PUU/ORMMTnanocomposities执行了超级机械性质。因为ORMMT的存在，两T<潜水艇class=“a-plus-plus”>软片断的g并且黝黑增加的PUU，和为第一步和第二步的分解温度分别地增加了。TEM图象证明在PUU合成展览的organophilicMMT粒子置闰和脱落的高度。

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简介：Oximeswereoxidizedtothecorrespondingcarbonylcompoundsingoodtohighyieldsbyenvironmentallyfriendlyandgreenoxidant,H_2O_2catalyzedbymontmorilloniteK-10supportedcobalt(Ⅱ)chloride.