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1、SynthesisandCharacterizationofBiodegradablePoly(1,4-butanediolsuccinate)DAEKYUNGSONGandYONGKlELSUNG*DepartmentofChemistry,DonggukUniversity,Seoul100-715,KoreaSYNOPSISBiodegradablepoly(1,4-butanediolsuccinate)wassynthesizedfrom1,4-butanediolandsuccinicanhydride.Th
2、esynthesizedpolymerwasidentifiedby'H-NMRspectrometerandFT-IRspectrophotometer.Theweightaveragemolecularweightswerebetween4,600and29,000,andmolecularweightdistributionswereintherangeof1.7and1.9.Theglasstransitiontemperatureofpoly(1,4-butanediolsuccinate)wasreveale
3、dat73'C.Thecrys-tallizationandcoldcrystallizationofthepolymerswereinvestigatedasafunctionofheatingrate,coolingrate,reheatingrate,andmolecularweight.Thebiodegradationbehaviorofpoly(1,4-butanediolsuccinate)inmicro-organismssuchasfungi,actinomycetes,andbacteriawasst
4、udiedbyusingmodifiedASTMmethod.Baseduponvisualobservation,thecrystallinestructureoffilmscomposedoflargermolecularweightpolymersretainedtheircrystallinitylongerthansimilarstructuresinlowmolecularweightsamples.01995JohnWiley&Sons.Inc.paredusingKrebscycleacid,andpol
5、y(P-malicacid)INTRODUCTIONderivertivesthathavehydrophilicityandhydropho-bicityweresynthesizedandcharacterized.14-17Biodegradablepolyestersderivedfroma-hydroxyTheKrebscycleacidsaregoodcandidatesfortheacidsandlactonesarebeingusedinanincreasinglydevelopmentofnewpoly
6、esters.14-17Thetricarboxyliclargenumberofbiomedicalapplications,suchasacidcycle,orKrebscycle,istheprocessduringwhichabsorbableboneplatesandothersurgicalfixationacetalmoiety,inacetalCoA,isoxidizedcompletelydevices,bioabsorbablesurgicalsuture,andcarriertocarbondiox
7、ideandwater.Itisexpectedthatsystemsforthecontrolledreleaseofdrugs.'-6polyesterpreparedusingKrebscycleacidderivativesThegreatimportanceofabiodegradablematerialisbiocompatibleandbiodegradable,andthedeg-relatestothebiocompatibility,toxicity,andim-radationresiduewill
8、benontoxic.munogenicity.'~~AdditionalrequirementsforsomeInthisstudy,poly(1,4-butanediolsuccinate)wasapplicationsarepredictablerateofbiodegradationsynthesizedfr
