Characterization of Polymers

absorption bands acid amorphous Anal analysis apparatus behavior calculated CH₂ chain characterization Chem chemical chloride chromatography column components compounds concentration constant copolymers crosslinking crystalline crystallization decomposition density determination diffusion double bonds end groups end-group endothermic equation esters exothermic experimental fibers film fractions functional groups glass-transition gradient heat high polymers infrared infrared spectroscopy instrument isotactic kinetic magnetic material Mc/sec measurements melting peak melting point method methyl methylene mixture molecular weight molecular-weight distribution molecules monomer nonsolvent number-average obtained optical osmotic pressure parameters physical Plastics plot poly poly(vinyl poly(vinyl chloride polyester polyethylene Polymer Sci polymerization polypropylene polystyrene polytetrafluoroethylene precipitation procedure properties protons pyrolysis quantitative range reaction resins resonance sample saponification sedimentation shown in Figure solubility solution solvent spectra spectroscopy spectrum structure studies syndiotactic T₁ techniques temperature tests TGA curves thermogram tion usually values vapor vibration viscosity wave number York