Gas-chromatographic determination of methylester end groups in polyethylene terephthalate (PET) and ester-interchange products

摘要: A method for the determination of methylester end groups in polyester and ester-interchange product is described. The sample decomposed by boiling with hydrazine hydrate. methanol liberated determined gas chromatography using Tenax GC as column packing ethanol internal standard. chromatographic has passed through a number development stages, viz. backflush run methods.