Synthesis of a novel polyphosphate and its application with APP in flame retardant PLA英文

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1、RSCAdvancesViewArticleOnlinePAPERViewJournal

2、ViewIssueSynthesisofanovelpolyphosphateanditsapplicationwithAPPinflameretardantPLA†Citethis:RSCAdv.,2018,8,4483abababTingLiu,JianJing,YanZhang*andZhengpingFangToimprovetheflameresistanceofPLA,anovelphosphorus-containingflameretardant(PFRS)wassynthesized

3、viatheA2+B3typereactionofbisphenolicacid-basedmonomer(DPM,A2)andphosphorusoxychloride(POCl3,B3).FlameretardantPLAcompositecontaining15wt%PFRScouldachieveanLOIvalueof24.3%,aswellasaUL-94V2rating.BasedonthestructureofPFRS,here,intumescentflameretardant(IFR)systemswerepreparedbycombiningPFRSwithamm

4、oniumpolyphosphate(APP).TheresultantPLA/PFRS/APPsamplesshowedexcellentfire-resistancepropertiessuchasself-extinguishingbehaviorandextremelylowheatreleaserates.TheLOIvalueofPLAcompositewiththeadditionofReceived19thNovember20173.8wt%PFRSand11.2wt%APPcouldreach29.7%andpassUL-94V0rating,andthePHRRva

5、lueAccepted17thJanuary2018decreasedby46%comparedtopurePLA.InvestigationofthemorphologiesofthecharredresiduesbyDOI:10.1039/c7ra12582hScanningElectronMicroscopy(SEM)andRamanspectroscopyrevealedtheintrinsiccharringabilityofCreativeCommonsAttribution-NonCommercial3.0UnportedLicence.rsc.li/rsc-advan

6、cesIFRsystemstoformaheat-protectiveintumescent-likebarrieronthesurfaceofPLA.1.Introductiontendtoreleasealotofsmokeandtoxicgasesthatareharmfultohumanhealthandenvironment.17,18Asweknow,intumescentForthepastfewyears,biodegradablepolymershaveattractedameretardant(IFR)isconsideredasapromisinghaloge

7、n-freewidespreadattentionduetothelackofthepetroleumresourcesameretardantduetoitsadvantagesofhighefficiency,lowandtheincreasingenvironmentalconsciousness.1,2Polylactictoxicity,lowsmokeandnomoltendroppingduringburning.19–23However,traditionalIFRadditivesexhibitlowThisarticleislicensedunderaacid(PL

8、A),derivedfromstarchesandsugars,isregardedasoneofthemostpromisingpolymermaterialsforthemarketsofame-retardantefficiencyinPLAwithonlyUL-94V2ratingwasachieved.24Inmostcases,thehybridIFRsystemshavepackaging,textiles,coatings,biomedica