文献名:effectofionicliquidsontheaggregationbehaviorofpeo-ppo-peoblockcopolymersinaqueoussolution
作者:lilyzheng,chenguo,*jingwang,xiangfengliang,shuchen,junhema,binyang,yangyangjiang,andhuizhouliu*
laboratoryofseparationscienceandengineering,statekeylaboratoryofbiochemicalengineering,instituteofprocessengineering,chineseacademyofsciences,p.o.box353,beijing100080,china,andgraduateschoolofthechineseacademyofsciences,beijing100039,china
摘要:effectof1-butyl-3-methyl-imidazoliumbromide(bmimbr)ontheaggregationbehaviorofpeo-ppo-peopluronicp104aqueoussolutionwasstudiedbyfouriertransforminfrared(ftir)spectroscopy,freezefracturetransmissionelectronmicroscopy(ff-tem),dynamiclightscattering(dls),andnmrspectroscopy.whenthebmimbrconcentrationwasbelow1.232mol/l,thecriticalmicelletemperature(cmt)ofpluronicp104remainedconstant,whilethesizeofmicellesincreasedwithincreasingthebmimbrconcentration;abovethisconcentration,thecmtofpluronicp104decreasedabruptly,andbiggerclustersofbmimbrwereformed.theselectivenuclearoverhausereffect(noe)spectrumindicatesthatthepoblockofthep104interactswiththebutylgroupofthebmim+cationbyhydrophobicinteraction.itsuggeststhatwhentheconcentrationofbmimbrisbelow1.232mol/l,therearep104micellesintheaqueoussolutionwithbmimbrembeddingtothemicellarcore,whileabovethisconcentration,p104micellesandbmimbrclusterscoexistinthesystem.
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