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資料庫>Interfacial silica nanoparticles stabilize cocontinuous polymer blends
Interfacial silica nanoparticles stabilize cocontinuous polymer blends
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2018-08-31 10:11 823閱讀次數(shù)
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Weinvestigatedtheformationofcocontinuousstructuresinpolymerblends.Thesepolymericbijels(bicontinuousinterfaciallyjammedemulsiongels)werecomposedofpolystyreneoligomer,polybuteneandfluorescenthydrophobicsilicananoparticles.Amicron-sizedcocontinuousmorphologywasstabilizedbyamonolayerofsilicananoparticlesattheinterface.Real-timeobservationofcoalescencedynamicsinco-continuouspolymerblendsstabilizedbyinterfacialparticleswasforthefirsttimeachievedvialaserscanningconfocalmicroscopy.Wedemonstratedthatsuppressionofcoalescencearisesfromcoverageofinterfacesbynanoparticles.Furthermore,bycombiningconfocalmicroscopywithrheology,wecorrelatedtherheologicalresponseofacocontinuousstructurewithitsmorphologychange.Wefoundthattherheologicalbehaviorcanbeattributedtocompetitionbetweeninterfaceshrinkageandparticlenetworkformation.Inaddition,weshowedthataparticlescaffoldismaintainedevenaftertheremixingoftwopolymerphasesabovethespinodalpoint.Finally,wealsodiscusseddifferencesbetweentheshearresponseoftheparticle-stabilizedcocontinuousstructureandnormalcolloidalgels:theformeroneismorefragilethanthelatterundershear.
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Interfacial silica nanoparticles stabilize cocontinuous polymer blends
- Weinvestigatedtheformationofcocontinuousstructuresinpolymerblends.Thesepolymericbijels(bicontinuousinterfaciallyjammedemulsiongels)werecomposedofpolystyreneoligomer,polybuteneandfluorescenthydrophobicsilicananoparticles.Amicron-sizedcocontinuousmorphologywasstabilizedbyamonolayerofsilicananoparticlesattheinterface.Real-timeobservationofcoalescencedynamicsinco-continuouspolymerblendsstabilizedbyinterfacialparticleswasforthefirsttimeachievedvialaserscanningconfocalmicroscopy.Wedemonstratedthatsuppressionofcoalescencearisesfromcoverageofinterfacesbynanoparticles.Furthermore,bycombiningconfocalmicroscopywithrheology,wecorrelatedtherheologicalresponseofacocontinuousstructurewithitsmorphologychange.Wefoundthattherheologicalbehaviorcanbeattributedtocompetitionbetweeninterfaceshrinkageandparticlenetworkformation.Inaddition,weshowedthataparticlescaffoldismaintainedevenaftertheremixingoftwopolymerphasesabovethespinodalpoint.Finally,wealsodiscusseddifferencesbetweentheshearresponseoftheparticle-stabilizedcocontinuousstructureandnormalcolloidalgels:theformeroneismorefragilethanthelatterundershear.[詳細]
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2018-08-31 10:11
產(chǎn)品樣冊
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Interfacial silica nanoparticles stabilize cocontinu
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Polymer Source P13253-3HTOH說明書
- 世界ding級實驗材料供應(yīng)商polymersource正式授權(quán)上海起發(fā)為其ZG代理,polymersource在一直是行業(yè)的標桿,一直為廣大科研客戶提供Z為優(yōu)質(zhì)的產(chǎn)品和服務(wù),上海起發(fā)一直秉承為ZG科研客戶帶來**的產(chǎn)品,**的服務(wù),簽約polymersource就是為了給廣大科研客戶帶來更加完善的產(chǎn)品和服務(wù),您的滿意將是我們Zda的收獲polymersourceZG代理,polymersource上海代理,polymersource北京代理,polymersource廣東代理,polymersource江蘇代理polymersource湖北代理,polymersource天津,polymersource黑龍江代理,polymersource內(nèi)蒙古代理,polymersource吉林代理,polymersource福建代理,polymersource江蘇代理,polymersource浙江代理,polymersource四川代理,polymersource成立于1994年,是一家領(lǐng)xian的高質(zhì)量建筑控制專業(yè)級的聚合物和生物聚合物的研究產(chǎn)品供應(yīng)商。polymersource的研究團隊包括動態(tài),主管和創(chuàng)新的科學(xué)家,在各種學(xué)術(shù)和研究機構(gòu)提供yi流的服務(wù)。polymersource的科學(xué)家已經(jīng)完成了生產(chǎn)3000多嵌段共聚物,產(chǎn)品質(zhì)量得到了全世界的認可。除了提供生物/聚合物,聚合物源已經(jīng)開發(fā)了基于我們的產(chǎn)品的合成和應(yīng)用知識產(chǎn)權(quán)。SampleName:HydroxyendfuctionalizedPoly(3-hexylthiophene)Sample#:P13253-3HTOHSynthesisProcedure:Purificationofpolymer:Thecrudepolymerwasrecoveredfromreprecipitationintomethanol.TheinorganicsaltswereremovedbyusingaSoxhletextractorwithMethanol.Characterization:Themolecularweightandpolydispersityindex(PDI)areobtainedbysizeexclusionchromatography(SEC)inTHForChloroform.SECanalysiswasperformedonaVarianliquidchromatographequippedwithrefractiveandUVlightscatteringdetectors.ThreeSECcolumnsfromSupelco(G6000-4000-2000HXL)wereusedwithtripledetectorsfromViscotekCo.Themolecularweightiscalculatedbasedonpolystyrenestandards.TheNMRspectrumwasrecordedindeuteratedchloroformtodeterminethefunctionalityandthecompositionofcopolymer.Solubility:OHendterminatedPoly(3-hexylthiophene)issolubleinTHF,TolueneandCHCl3.Itprecipitatesfrommethanolandacetone.貨號品名規(guī)格生產(chǎn)廠家P13253-3HTOH-1gPoly(3-hexylthiophene-2,5-diyl),α-hydroxy-terminated1GpolymersourceP13253-3HTOH-1g現(xiàn)貨供應(yīng)我們公司Zda優(yōu)勢是強大的采購,1:基本什么都能進口,血清,抗體,耗材,還有部分限制進口的,2:貨品全,現(xiàn)經(jīng)營過700多個品牌,基本所有生物試劑耗材都可以進口,特別是冷偏的產(chǎn)品那就更有優(yōu)勢,3:提供加急服務(wù),一般1-2周到貨,超過時限加急費全免4:價格公道,絕大部分價格有優(yōu)勢,當然不能保證1**%產(chǎn)品都是價格Zdi,因為價格Zdi意味著沒有服務(wù).5:良好的信譽,大部分客戶我們提供貨到付款服務(wù),客戶包括清華,北大交大復(fù)旦,中山等100多所大學(xué),ROCHE,阿斯利康,國藥,fisher等500多家公司6:我們du家代理的品牌有:AntibodyResearchCorporation,arcticzymes,Biorelevant,AmberGen,Inc.,clemente-associates,clodronateliposomes,ColumbiaBiosciences,enzymeresearch,GeneBridgesGmbH,Genovis,AmberGen,Inc.BiotechnologyGmbH,HaematologicTechnologiesHTIHaemtech,hookelabs,Immudex,InnovativeResearchofAmerica,inspiralis,ListBiologicalLaboratories,Inc.,lumafluor,Microsurfaces,multiplicom,nanotools,Pel-FreezBiologicals,pentapharm,progen,ProteinArk,QA-Bio,Inc,QA-Bio,IncQuickZymeBiosciences,Teknova,TriLinkBioTechnologies,Inc.,ZyagenLaboratories等7:我們還是invitrogen,qiagen,MidlandBioProductsCorporationam,sigma;neb,roche,merck,rnd,BD,GE,pierce,BioLegend等知名批發(fā),歡迎合作。[詳細]
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2018-09-29 10:02
產(chǎn)品樣冊
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Polymer Source P18952-BdEO說明書
- 世界ding級實驗材料供應(yīng)商polymersource正式授權(quán)上海起發(fā)為其ZG代理,polymersource在一直是行業(yè)的標桿,一直為廣大科研客戶提供Z為優(yōu)質(zhì)的產(chǎn)品和服務(wù),上海起發(fā)一直秉承為ZG科研客戶帶來**的產(chǎn)品,**的服務(wù),簽約polymersource就是為了給廣大科研客戶帶來更加完善的產(chǎn)品和服務(wù),您的滿意將是我們Zda的收獲polymersourceZG代理,polymersource上海代理,polymersource北京代理,polymersource廣東代理,polymersource江蘇代理polymersource湖北代理,polymersource天津,polymersource黑龍江代理,polymersource內(nèi)蒙古代理,polymersource吉林代理,polymersource福建代理,polymersource江蘇代理,polymersource浙江代理,polymersource四川代理,polymersource成立于1994年,是一家領(lǐng)xian的高質(zhì)量建筑控制專業(yè)級的聚合物和生物聚合物的研究產(chǎn)品供應(yīng)商。polymersource的研究團隊包括動態(tài),主管和創(chuàng)新的科學(xué)家,在各種學(xué)術(shù)和研究機構(gòu)提供yi流的服務(wù)。polymersource的科學(xué)家已經(jīng)完成了生產(chǎn)3000多嵌段共聚物,產(chǎn)品質(zhì)量得到了全世界的認可。除了提供生物/聚合物,聚合物源已經(jīng)開發(fā)了基于我們的產(chǎn)品的合成和應(yīng)用知識產(chǎn)權(quán)。SampleName:Poly(butadiene-b-ethyleneoxide)Sample#:P18952-BdEO(polybutadieneblockrichin1,2-addition)Structureof1,2-richmicrostructure:SynthesisProcedure:Poly(butadiene[1,4-or1,2addition]-b-ethyleneoxide)canbepreparedbythedifferentroutesasreportedintheliterature(ref:Macromolecules1996,29,6994).Thedirectsynthesisofdiblockcopolymerusinglithiumcounterioninthepresenceofphosphazenebaset-BuP4isreportedinMacromolecules1999,32(8),2783785.Thepolymerscanalsobesuccessfullysynthesizedusingthedifferentend-functionalizedpolymersasinvestigatedinourlab.Thesemethodologiesareproprietary.Characterization:OH-terminatedpolybutadienepolymerwasanalyzedbysizeexclusionchromatography(SEC)toobtainthemolecularweightandpolydispersityindex(PDI).Thefinalblockcopolymercompositionwascalculatedfrom1H-NMRspectroscopybycomparingthepeakareaofthevinylicbutadieneprotonsbetweenabout5.0-5.4ppmwiththeethyleneoxideprotonsat3.6ppm.BlockcopolymerPDIisdeterminedbySEC.Note:The1H-NMRof1,2-polybutadieneiscomposedof1protonsignalat5.4ppmand2protonsignalsat5.0ppm.Signalsduetovinylic1,4-polybutadienearealsopresentat5.4ppm.Solubility:Poly(butadiene-b-ethyleneoxide)issolubleinTHF,CHCl3,andtoluene.Thepolymerhasvariablesolubilityinhexane,methanol,ethanolandwaterdependingonitscomposition.DSCthermalanalysisofP18952-BdEO:ThermalanalysisofthesampleswascarriedoutonaTAQ100differentialscanningcalorimeterataheatingrateof10oC/min.Themidpointoftheslopechangeoftheheatflowplotofthesecondheatingscanwasconsideredastheglasstransitiontemperature(Tg).Themeltingtemperature(Tm)wastakenasthemaximumoftheendothermicpeakwhereasthecrystallizationtemperature(Tc)wasconsideredastheminimumoftheexothermicpeak.貨號品名規(guī)格生產(chǎn)廠家P18952-BdEOPoly(butadiene(1,2addition)-b-ethyleneoxide)2gpolymersourceP18952-BdEO現(xiàn)貨供應(yīng)我們公司Zda優(yōu)勢是強大的采購,1:基本什么都能進口,血清,抗體,耗材,還有部分限制進口的,2:貨品全,現(xiàn)經(jīng)營過700多個品牌,基本所有生物試劑耗材都可以進口,特別是冷偏的產(chǎn)品那就更有優(yōu)勢,3:提供加急服務(wù),一般1-2周到貨,超過時限加急費全免4:價格公道,絕大部分價格有優(yōu)勢,當然不能保證1**%產(chǎn)品都是價格Zdi,因為價格Zdi意味著沒有服務(wù).5:良好的信譽,大部分客戶我們提供貨到付款服務(wù),客戶包括清華,北大交大復(fù)旦,中山等100多所大學(xué),ROCHE,阿斯利康,國藥,fisher等500多家公司6:我們du家代理的品牌有:AntibodyResearchCorporation,arcticzymes,Biorelevant,AmberGen,Inc.,clemente-associates,clodronateliposomes,ColumbiaBiosciences,enzymeresearch,GeneBridgesGmbH,Genovis,AmberGen,Inc.BiotechnologyGmbH,HaematologicTechnologiesHTIHaemtech,hookelabs,Immudex,InnovativeResearchofAmerica,inspiralis,ListBiologicalLaboratories,Inc.,lumafluor,Microsurfaces,multiplicom,nanotools,Pel-FreezBiologicals,pentapharm,progen,ProteinArk,QA-Bio,Inc,QA-Bio,IncQuickZymeBiosciences,Teknova,TriLinkBioTechnologies,Inc.,ZyagenLaboratories等7:我們還是invitrogen,qiagen,MidlandBioProductsCorporationam,sigma;neb,roche,merck,rnd,BD,GE,pierce,BioLegend等知名批發(fā),歡迎合作。[詳細]
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2018-09-29 10:02
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