Latex-state 13C-NMR spectroscopy for poly(butyl acrylate)

The resolution and the relaxation time of poly(butyl acrylate) in latex-state C-13-NMR spectroscopy are associated with local motions of the polymer in a dispersoid. Latexes were prepared by emulsion polymerization of butyl acrylate with ammonium persulfate. The latex-state C-13-NMR spectra were measured at 323-353K with a spectrometer operating at 399.7 and 100.4MHz for H-1 and C-13, respectively. The half width of the latex-state C-13-NMR spectrum depends on the temperature. The half width and the spin-spin relaxation time, T-2, are superimposed onto the master curve with a reference temperature, T-X.