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A novel biodegradable amphiphilic diblock copolymers based on poly（lactic acid） and hyaluronic acid
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2018-08-31 10:11 760閱讀次數(shù)
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Anovelbiodegradableamphiphilicdiblockcopolymersbasedonpoly(lacticacid)andhyaluronicacidasbiomaterialsfordrugdelivery-Springer
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A novel biodegradable amphiphilic diblock copolymers based on poly（lactic acid） and hyaluronic acid - Anovelbiodegradableamphiphilicdiblockcopolymersbasedonpoly(lacticacid)andhyaluronicacidasbiomaterialsfordrugdelivery-Springer[詳細(xì)]
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2018-08-31 10:11
產(chǎn)品樣冊
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- Synthesis and Micellar Characterization of Amphiphilic Diblock Copolymers Based on Poly(2-ethyl-2-ox
- Amphiphilicdiblockcopolymersweresynthesizedbasedonpoly(2-ethyl-2-oxazoline)(PEtOz)asahydrophilicblockandaliphaticpolyesterssuchaspoly(L-lactide)(PLA)orpoly(-caprolactone)(PCL)asahydrophobicblock.Theirmicellarcharacteristicsinanaqueousphasewereinvestigatedbyusingdynamiclightscatteringandfluorescencetechniques.Theblockcopolymersformedmicellesintheaqueousphasewithcriticalmicelleconcentrations(cmcs)intherangeof1.0-8.1mg/L.Thecmcvaluesbecomeloweruponincreasingthelengthofthehydrophobicblock.Themeandiametersofthemicelleswereintherangeof108-192nm,withanarrowdistribution.Ingeneral,themicellesizeincreasedasthehydrophobicPLAorPCLblockbecamelarger.Thepartitionequilibriumconstants,Kv,ofpyreneinthemicellarsolutionsoftheblockcopolymerswerefrom1.79105to5.88105.ForeachblockcopolymersystemofPEtOz-PLAorPEtOz-PCL,theKvvalueincreasedasthelengthofthehydrophobicblockincreased.Thesteady-statefluorescenceanisotropyvalues(r)of1,6-diphenyl-1,3,5-hexatriene(DPH)were0.265-0.284inPEtOz-PLAsolutionand0.189-0.196inPEtOz-PCLsolution.TheanisotropyvaluesofPEtOz-PLAswerehigherthanthoseofPEtOz-PCLs.Theanisotropyvalueswereindependentofthelengthofthehydrophobicblockwhenthechemicalstructuresofthehydrophobicblockswereidentical.ThemicellesunderwenthydrogenbondingatpH<3.5withpoly(acrylicacid),whichproducedpolymercomplexprecipitatesthatcouldbereversiblydispersedasmicellesatpH>3.8.[詳細(xì)]
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2018-08-31 10:11
產(chǎn)品樣冊
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- TOWARD AMPHIPHILIC DIBLOCK COPOLYMERS BY RAFT. KINETIC STUDY ON PH RESPONSIVE POLYMERS
- Reversibleadditionfragmentationtransfer(RAFT)belongstothegroupofthecontrolledradicalpolymerization(CPR)methods,intensivelyemployedinthesynthesisofpolymerswithcomplexarchitecturesandstructures.1,2pHresponsiveamphiphiliccopolymerssynthesizedbyRAFT,leadtomaterialswithversatileproperties.OptimizationofthereactionkineticsduringRAFTpolymerizationof2-(dimethylamino)ethylacrylate(DMAEA)inN,Ndimethylformamide(DMF)wasinvestigatedinthisstudy,followedbythesynthesisofDMAEA/styreneamphiphilicdiblockcopolymers,usingAutomaticContinuousOnlineMonitoringofPolymerizationreactions(ACOMP).Poly(DMAEA)isapHsensitivepolymerwithwideapplicationsinpharmaceuticalandwatertreatmentindustriesyetchallengingduetopossibleinteractionofitsaminogroupwithcatalysts.[詳細(xì)]
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2018-08-31 10:11
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其它
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期刊論文
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- Corosolic acid檢測報告
- 英文名:Corosolicacid中文別名:英文別名:2alpha-HydroxyursolicacidCas號:4547-24-4產(chǎn)品編碼：BP0395分子式:C30H48O4分子量:472.71來源:Chamaenerionangustifolium（preferredgenusnameEpilobium）,Arnebiaeuchroma,Tripetaleiapaniculataandanumberofotherplants純度:95%~99%分析方法:HPLC-DADor/andHPLC-ELSD鑒定方法:質(zhì)譜（Mass）,核磁（NMR）包裝:棕色小玻璃瓶，標(biāo)準(zhǔn)包裝10mg，20mg，50mg；可以按客戶需求包裝。[詳細(xì)]
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2018-09-25 10:08
產(chǎn)品樣冊
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- Standardisation of acid titrants with TRIS
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實驗操作
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- Total acid in wine and beverages
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選購指南
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專利
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- Free Acid in Copper Refining Solutions
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安裝說明
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- ISOLATION OF HOP ACID FROM BEER
- ISOLATION OF HOP ACID FROM BEER[詳細(xì)]
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2006-07-20 00:00
實驗操作
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- Fatty acid collectors for phosphate flotation
- Fatty acid collectors for phosphate flotation[詳細(xì)]
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2012-10-16 00:00
報價單
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- Determination of folic acid by capillary electrophor
- Determination of folic acid by capillary electrophor[詳細(xì)]
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操作手冊
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- Acid number by potentiometric titration according to
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2024-09-28 00:35
選購指南
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- Grom? Amino Acid Column Kits
- Grom? Amino Acid Column Kits[詳細(xì)]
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2024-09-19 07:53
安裝說明
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