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PECH-amine的合成及其在棉织物靛蓝染色中的应用.docx

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PECH-amine的合成及其在棉织物靛蓝染色中的应用 Introduction Indigodyeisapopularandwell-knownplant-baseddyeusedtodyecottonfabric.However,thedyehasseveralenvironmentalandeconomicissuesassociatedwithitthathaveledtothecreationofsyntheticdyessuchasPECH-amine.ThesynthesisofPECH-amineanditsapplicationindyeingcottonfabricwithindigoisaneco-friendlyandeconomicalalternativetotraditionalmethods.ThispaperwilldiscussthesynthesisofPECH-amineanditsapplicationinindigodyeingofcottonfabric. SynthesisofPECH-amine PECH-amineisasyntheticdyethatisproducedbythereactionof4,4'-diaminodiphenyletherand4,4'-oxydiphthalicanhydride.Thereactioniscarriedoutinasolventmediumtofacilitatetheformationofthefinalproduct.Thesolventusedistypicallyanorganicsolventsuchasxyleneortoluene.ThereactionproceedsinseveralstepstoproducePECH-aminewithhighpurityandyield. ThefirststepinthesynthesisofPECH-amineinvolvesreacting4,4'-diaminodiphenyletherwith4,4'-oxydiphthalicanhydride.Thetworeactantsaremixedtogetherinanorganicsolventandheatedtoahightemperature.Thetemperatureandreactiontimearecarefullycontrolledtoensurethatthereactionproceedstocompletion. Next,themixtureiscooledandtheprecipitateisfilteredtocollecttheresultingproduct.Theproductiswashedwithasuitablesolventtoremoveanyimpurities.Finally,theproductisdriedtoobtainthepurePECH-amine. ApplicationofPECH-amineinCottonFabricDyeing Cottonisapopularfabricforclothing,anditsdyeingwithindigoisatraditionalmethodthathasbeenusedforcenturies.Indigodyeisobtainedfromplants,anditsproductionprocessistime-consumingandinvolvesseveralsteps.Inaddition,indigodyesarenoteasilysolubleinwater,makingtheirapplicationtocottonfabricdifficult. PECH-amineisasyntheticdyethatiseco-friendlyandeconomicalandhasbeenfoundtobeeffectiveinthedyeingofcottonfabricwithindigo.Thedyeiswater-soluble,whichmakesiteasiertoapplytocottonfabric.TheprocessofdyeingcottonfabricwithPECH-amineissimpleandinvolvesseveralsteps. Thefirststepistopreparethecottonfabricbywashingittoremoveanyimpurities.ThefabricisthenimmersedinasolutionofPECH-amineand