PA-3 polyamide-3 to PZ polyphosphazene

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1、PA-3polyamide-3PARAMETERUNITVALUEREFERENCESGENERALCommonname-polyamide-3,poly(imino-1-oxotrimethylene),poly(b-alanine)ACSname-poly[imino(1-oxo-1,3-propanediyl)]Acronym-PA-3CASnumber-24937-14-2SYNTHESISMonomer(s)structure-CH=CHC(O)NH22Monomer(s)CASnumber(s)-79-06-1Monomer(s)molecularweight(s)dalton,g

2、/71.08mol,amuMethodofsynthesis-hydrogentransferpolymerizationofacrylamideinthepres-Masamoto,J,MemoirsofFukuienceofanioniccatalyst;vinylpolymerizationissidereac-UniversityofTechnology,3,1,291,tion,whichcanbepreventediftert-BuOKcatalystisfinely2003.dispersedinpolymerizationsolventsTemperatureofpolymeri

3、zationoC80-200Catalyst-t-BuONaYield%98-99Massaveragemolecularweight,dalton,g/90,000-140,000Mmol,amuwSTRUCTURECrystallinity%38Wolfe,E;Stoll,B,ColloidPolym.Sci,.258,300,1980.Celltype(lattice)-monoclinic(formI);orthorhombic(formII)Celldimensionsnma:b:c=0.933:0.478:0.873Masamoto,J,MemoirsofFukuiUniversi

4、tyofTechnology,3,1,291,2003.Unitcellanglesdegree=60Spacingbetweencrystallitesnm0.378Polymorphs-I,IIChainconformation-planarzigzagPHYSICALPROPERTIESDensityat20oCgcm-31.33(theoretical=1.39)Meltingtemperature,DSCoC330-340(decomposition)GlasstransitiontemperatureoC111Dielectricconstantat100Hz/1-4.7/-MHz

5、MECHANICAL&RHEOLOGICALPROPERTIESElongation%10-20Young’smodulusGPa374-414(theoretical)Peeters,A;vanAlsenoy,C;Bartha,F;Bogar,F;Zhang,M-L;vanDoren,VE,Int.J.QuantumChem.87,303-10,2002.Waterabsorption,equilibriumin%9(similartosilk)waterat23oCHANDBOOKOFPOLYMERS/Copyrights2012;ChemTecPublishing201PA-3polya

6、mide-3PARAMETERUNITVALUEREFERENCESCHEMICALRESISTANCEAciddilute/concentrated-poorAlcohols-goodAliphatichydrocarbons-goodAromatichydrocarbons-goodHalogenatedhydrocarbons-poorGoodsolvent-dichloroaceticacid,formicacid,phenol,sulfuricacid,trifluoro-ethanolNon-solvent-chloroform,butanol,methanol,waterTOXIC

7、ITYCarcinogeniceffect-notlistedbyACGIH,NIOSH,NTPPROCESSINGTypicalprocessingmethods-becausepolyamide3meltswithdecomposition,meltspinningMasamoto,J,MemoirsofFukuicannotbeusedbutwetordryspinningisused;we