简介：Aryloxy-terminatedpolydimethylsiloxanes(AOS)weresynthesizedbythetelomerizationofhexamethylcyclotrisiloxane(D3)withphenols.ThestructuresofAOSwerecharacterizedbyUV,IR,^2HNMRandelementalanalysis,Theeffectsofthereactionconditionsandthemoleratiosofthereactantsonthemolecularweightofthepolymerwerediscussed.AOS′sstructuralinfluenceonbactericidalaction,flocculationandhydrolysiswasstudied.
简介：Anepoxy-terminatedhyperbranchedaromaticpolyester(P3)wassynthesizedfromahyperbranchedaromaticpolyestercontainingcarboxylicacidendgroups(P1),whichwasderivedfromthecondensationpolymerizationoftheAB2monomer,5-acetoxyisophthalicacid.PolymerP1wasconvertedintothepolymericacidchloridebyreactionwiththionylchloride.Theacidchloridewasreactedwithethanolandglycidoltoformapoly(ethylester)(P2)andanepoxyterminatedmaterial(P3),respectively.Thereactionconditionsineachstepoftheseprocesseshadtobecontrolledverycarefullytoavoidunwantedcross-linkingreactions.Thecharacterizationofproductsandintermediates,includingmolecularweightdistributionsandthermalproperties,arereported.
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