简介：Thetreatmentandresourcereuseof1,2,4-acidproducingwastewaterbyself-mademacroporousadsorptionresinND,A-107wasstudiedinthispaper.Optimumadsorptionanddesorptionprocessparameterswereacquiredbysystematicallystudy.ThepolymericresinNDA-107indicatedgoodadsorption&desorptionof1,2,4-acidinthewastewater.Theremovalefficiencyof1,2,4-acid,CODerisabout78%,72%respectively.Itisevidentthatthisadsorptionprocessisanefficienttreatmentmethodfor1,2,4-acidproducingwastewater.Atthesametime,theaccumulationandresourcereuseofl,2,4-acidcanberealizedinthisprocess.
简介：Inthiswork,DSCandSEMstudiesindicatethation-ligandinteractioncanbeutilizedtoenhancetheinteractionofpoly(styrene-block-2-vinylpyridine)[P(S-b-2VP)]andpolyethylenebasedionomer(Surlyn).Thecompatibilityforthisblendingsystemcanbeimprovedbythisspecialinteractionand20/80wtistheoptimumblendingcompositionwithgoodcompatibility.FTIRresultsfurthercertifythatstronginteractionsexistintheblendingsystem.
简介：Anovelhydrophilicnanocompositeadditive(TiO2-g-PNIPAAm)wassynthesizedbythesurfacemodificationoftitaniumdioxide(TiO2)withN-isopropylacrylamide(NIPAAm)via"graft-from"technique.Andthenanocompositemembraneofpoly(vinylidenefluoride)(PVDF)/TiO2-g-PNIPAAmwasfabricatedbywetphaseinversion.Thegraftdegreewasobtainedbythermo-gravimetricanalysis(TGA).Fouriertransforminfraredattenuatedreflectionspectroscopy(FTIR-ATR)andX-rayphotoelectronicspectroscopy(XPS)characterizationresultssuggestedthatTiO2-g-PNIPAAmnanoparticlessegregatedonmembranesurfaceduringthephaseseparationprocess.Scanningelectronmicroscopy(SEM)wasconductedtoinvestigatethesurfaceandcross-sectionofthemodifiedmembranes.ThewatercontactanglemeasurementsconfirmedthatTiO2-g-PNIPAAmnanoparticlesendowedPVDFmembranesbetterhydrophlilicityandthermo-responsivepropertiescomparedwiththoseofthepristinePVDFmembrane.Thewatercontactangledecreasedfrom92.8°ofthePVDFmembraneto61.2°ofthenanocompostiemembrane.Bovineserumalbumin(BSA)staticanddynamicadsorptionexperimentssuggestedthatexcellentantifoulingpropertiesofmembraneswasacquiredafteraddingTiO2-gPNIPAAm.ThemaximumBSAadsorptionat40°Cwasabout3timesthanthatat23°C.ThepermeationexperimentsindicatedthewaterfluxrecoverratioandBSArejectionratiowereimprovedatdifferenttemperatures.
简介：Asupercriticalcarbondioxide(ScCO2)assistedphaseinversionwasdevelopedtoproducemicroporouspoly(vinylidenefluoride)(PVDF)membraneswhosemorphologycharacteristicsarisefrombothliquid-liquiddemixingandsolid-liquiddemixing(crystallization).ThisresultwasconfirmedbyFouriertransforminfraredspectroscopy(FTIR),fromwhichbothαandβcrystalswerefound.Asrevealedbycontactangleexperiment,thePVDFmembranespreparedviaScCO2assistedphaseinversionweremorehydrophobiccomparedwiththecontrolmembraneproducedviaconventionalimmersionprecipitationtechnique.Inparticular,thesamplewith15wt%PVDFpreparedat45°Cand13MPaexhibitedacontactangleof142°,whichwasmainlycausedbythemultilevelmicro-andnano-structure.Theeffectsofpolyethyleneglycol(PEG),polyvinylpyrrolidone(PVP)andlithiumchloride(LiCl)onthestructuresandcrystalformwereinvestigated.PVPpromotedtheformationofβphasecrystalform,whilePEGbooststheevolutionofαphase.LiClrestrainedthecrystallizationdegreeofPVDFmembraneunderScCO2.
简介：penta醚混合物被di(trimethylolpropane)的反应作为烷基卤化物作为强壮的底和甲基碘化物与钠氢化物综合。这混合物被NMR，FTIR，和GC技术描绘。MgCl2-supported钛催化剂与作为内部施主改变penta醚化合物的数量被合并，也，没有内部施主的催化剂被综合。综合催化剂和常规Ziegler-Natta催化剂被描绘。钛内容被spectrophotometry决定，由由argentometric滴定的complexometric滴定和氯化物的镁。有准备MgCl2-supportedZiegler-Natta催化剂的丙烯聚合上的新内部施主的效果被调查然后这些结果与用常规diisobutylphthalate-besed-Ziegler-Natta催化剂获得的结果相比。聚丙烯的最高的crystallinity度，融化的温度，和isotacticity与penta-ether/Mg用催化剂被获得臼齿的比率平等者到0.21。
简介：TiCl_4/MgCl_2/claycompoundcatalystwaspreparedbychemicalreaction.Exfoliatedpolypropylene(PP)/claynanocompositesweresynthesizedbyinsitupolymerizationwiththiscompoundcatalyst.Effectsofpolymerizationtemperature,polymerizationtime,propylenepressure,solventconsumptionandpre-treattimeofcatalystoncatalystactivityandcatalyticstereospecificitywerestudied.Underoptimalconditions,activityofthenano-compoundcatalystisabout88.3kg/(molTi·h).IsotacticityofPPobtainedinthenanocompositesisintherangeof89%-99%,anditsmeltingtemperatureisabout159℃.Theweight-averagemolecularweightofPPcanreach6.7×10~5-7.8×10~5,andthemolecularweightdistributionisbetween7.7and7.9.
简介：Anewdi-functionadsorbent(JN-3)waspreparedbysulfhydrylmodified.ComparingwithAmberliteXAD-4andNDA-150,theequilibriumadsorptionforphenolontheJN-3fromaqueoussolutionswastested,perfectadsorptioncapacitywasshown.Pb2+canbealsoremovedbyJN-3becauseofthechelateinteractionbetweensulfhydrylgroupsandmetalions.Thisadsorbentcouldbeusedinremovalofcombinepollutantssuchasphenoliccompoundsandheavymetalionsfromwastestreams.
简介：新印离子的聚合物(IIP)被4-vinylpyridine(单体)的copolymerization综合，ethyleneglycoldimethacrylate(cross-linker)和2,2-azobis-isobutyronitrile(开始者)面对Cd2+和quinaldic酸(complexing代理人)。IIP和空白的聚合物的吸附能力分别地是45.0和6.2mgg1，这被发现。为不同二进制混合的印的聚合物的相对选择系数也是计算的。比作非印的聚合物(捏)，IIP为Cd(II)有更高的选择。IIP被使用一个简单的批抽取过程从水样品为镉抽取用作吸着剂。从IIP的Cd2+抽取和它的恢复上的不同参数的效果被使用试验性的设计方法论评估并且优化。优化吸附/解吸附作用过程被申请从真实的水样品的镉移动。获得的恢复证明这IIP能从水样品被用于踪迹镉离子的移动。
简介：LigandeffectofthecatalyticsystemWCl6-Et2AlClforringopeningmetathesispolymerization(ROMP)ofdicyclopentadiene(DCPD)wasinvestigated.Theexperimentalresultsshowthataddingstericallyhinderedphenol-2.6-di-tert-butylcresylol(DTBC)inthecatalyticsystemnotonlycanobviouslyincreasethemonomerconversionofpolymerizationbutalsoimprovethemechanicalproperties,suchasnotchedimpactstrength(NIS),tensilestrength(TS)ect.,ofthesynthesizedpolydicyclopentadiene(PDCPD),Asimilareffectcanbeobservedbyusingastericallyhinderdpolymericphenol-linearphenolformaldehyderesin(LPF)asaligand.
简介：Kineticsofchloride/sulfate,chloride/nitrateandnitrate/sulfateforwardexchangesandreverseexchangesatsolutionconcentrationsof1N,0.2Nand0.02Non201×7strongbaseanionexchangeresin,respectively,havebeenexaminedat25℃.Itisfoundthattheforwardandthereverseexchangeratesofthetwogivenionsatlowsolutionconcentration,respectively,underidenticalconditionscanbecontrolledbydifferentmechanisms,whilethoseathighsolutionconcentrationareallcontrolledbyparticlediffusion.Theternaryexchangeratesofsulfate/(chloride+nitrate)andnitrate/(chloride+sulfate)havealsobeenexamined.
简介：Cobaltandnickelcomplexes(1a-1dand2a-2d,respectively)supportedby2-imidate-pyridineligandsweresynthesizedandusedfor1,3-butadienepolymerization.ThecomplexeswerecharacterizedbyIRandelementanalysis,andcomplex1awasfurthercharacterizedbysingle-crystalX-raydiffraction.Thesolidstatestructureofcomplex1adisplayedadistortedtetrahedralgeometry.Uponactivationwithethylaluminumsesquichloride(EASC),allthecomplexesshowedhighactivitiestoward1,3-butadienepolymerization.Thecobaltcomplexesproducedpolymerswithhighcis-1,4contentsandhighmolecularweights,whilethenickelcomplexesdisplayedlowcis-1,4selectivityandtheresultingpolymershadlowmolecularweights.Thecatalyticactivitiesofthecomplexeshighlydependedontheligandstructure.Withtheincrementofpolymerizationtemperature,thecis-1,4contentandthemolecularweightoftheresultingpolymerdecreased.
简介：Two-dimensional(2D)materialshavebeendemonstratedtoexhibituniquepropertiesoriginatingfromits2Dnature.Inrecentyears,theconstructionof2Dmaterialshasbecomeatopicofgreatinterest.Thisarticlesummarizestherecentadvanceof2Dsupramolecularorganicframeworks(SOFs)whicharehomogeneouslyconstructedinsolutionphasethroughself-assemblyofrationallydesignedbuildingblocks.These2DSOFsaresolubleandstillmaintainstablenetworkstructuresinsolutions,whichexhibituniquenessnotonlyinstructuresbutalsoinproperties.Inthisconcisereview,theSOFs-relatedbackgroundisbrieflyintroducedfirstly,followedbyoutliningtheresearchprogressofsoluble2DSOFsfromtheperspectiveofmonomerdesign,assembly,andstructuralcharacterization.Thearticleendswithapersonaloutlookonthefuturedevelopmentofthisnewclassofsupramolecularpolymers.
简介：Theefficiencyofthepoly（3-hexylthiophene）（P3HT）and[6,6]-phenylC61-butyricacidmethylester(PC61BM)basedorganicsolarcellswasenhancedbyusing1,2,4-trichlorobenzene（TCB）asaprocessingadditivetocontroltheblendmorphology.TheadditionofTCBimprovedthearrangementofP3HTwhichresultedingoodphaseseparatedblendfilms.Correspondingly,theoptimizedsolarcellsshowedapowerconversionefficiency（PCE）of4.17%withafillfactor（FF）of0.69,whichwerehigherthanthoseofcommonthermalannealingdevices（PCE3.84%,FF0.67）.Theefficiencywasfurtherimprovedto4.74%bythermalannealingat150°Cfor10minwithahigherFFof0.74.
简介：一个非水的暂停polycondensation方法被建议继续为准备的p-phenylenediamine和terephthaloyl氯化物的反应poly(p苯撑terephthalamide)(PPTA)。系统与NMP-CaCl被操作<潜水艇class=“a-plus-plus”>是的2答案驱散的阶段和是的惰性的液体石蜡连续阶段。每NMP-CaCl<潜水艇class=“a-plus-plus”>在石蜡推迟的2答案microdroplet用作polycondensation发生了的microreactor。根据TGA，XRD，红外，SEM和EA的结果，有好质量的PPTA通过这个新奇方法被获得，并且影响这个过程的很多个主要因素被调查为PPTA的准备决定最佳条件。而且，这个二阶段的polycondensation系统与常规解决方案polycondensation方法相比带给许多唯一的优点，包括使反应物离开氧和水的封上的反应环境，HCl到的容易的移动支持更少的精力花费了工具的反应，控制得好的温度和低粘性。
简介：TheSiO2nanoparticleswerecoatedonthesurfaceofgrapheneoxide(GO)bysol-gelmethodtogettheSiO2-Gcompound.TheSiO2-GwasrestoredandoleophylicallymodifiedtopreparehydrophobicmodifiedSiO2-G(HM-SiO2-G)whichwassubsequentlyaddedtosiliconerubbermatrixtopreparetwo-componentroomtemperaturevulcanized(RTV-2)thermalconductivesiliconerubber.Themorphology,chemicalstructureanddispersityofthemodifiedgraphenewerecharacterizedwithSEM,FTIR,Raman,andXPSmethods.Inaddition,theheat-resistancebehavior,mechanicalproperties,thermalconductivity,andelectricalconductivityoftheRTV-2siliconerubberwerealsostudiedsystematically.TheresultsshowedthattheSiO2nanoparticleswerecoatedongrapheneoxidesuccessfully,andHM-SiO2-GwasuniformlydispersedinRTV-2siliconerubber.TheadditionofHM-SiO2-Gcouldeffectivelyimprovethethermalstability,mechanicalpropertiesandthermalconductivityofRTV-2siliconerubberandhadnogreatinfluenceontheelectricalinsulationperformance.
客服QQ：30444492琼网文【2021】1550-113号
增值电信业务经营许可证：琼B2-20210322
出版物经营许可证：新出发龙华出字第(2021)009号
广播电视节目制作经营许可证：(琼)字第00779号
版权所有 ©2002-2024 期刊网(www.qikanchina.com) 琼ICP备2021005105号
![New Polymer Syntheses Part 60： A Facile Synthetic Route to Polyamides Based on Thieno[<b style='color:red'>2</b>,3-b]thiophene and Their Corrosion Inhibition Behavior](/image/thesis16 "New Polymer Syntheses Part 60： A Facile Synthetic Route to Polyamides Based on Thieno[<b style='color:red'>2</b>,3-b]thiophene and Their Corrosion Inhibition Behavior")
