Journal of Polymer Science Part A-1 Polymer Chemistry · 1971 · 35 citations · 8 references
Natural SciencesChemistryMaterials ScienceOrganic ChemistryPolymer ChemistryPolymer MaterialsFree-radical PolymerizationPolymer FunctionalizationPolymer ProductionPolymer SynthesisPolymerization ChemistryPolymerization ProcessesCarboxyl FunctionalizationInitiator DesignPolymer Initiators
Abstract Butadiene, isoprene, and chloroprene have been polymerized in dioxane under free‐radical initiation to give liquid prepolymers containing terminal carboxyl groups. 4,4′‐Azobis(4‐cyanovaleric acid) was employed as the initiator. The prepolymers were obtained with molecular weights of 12,000 to 2000 and with functionalities usually greater than 2.0. Experimental parameters were studied to determine their effect on prepolymer yields and properties. The general preparative procedure and prepolymer characterization are described.
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