STUDY OF THE MICROSTRUCTURES OF PHENYL AND 4-FLUOROPHENYL POLYACRYLATES BY H-1 AND C-13 NMR-SPECTROSCOPY

The microstructures of phenyl and 4-fluorophenyl polyacrylates were st udied by 500 MHz H-1 and 125 MHz C-13 n.m.r. spectroscopy. The isotact icity parameters of both polyacrylates were calculated from the H-1 n. m.r. spectra, giving the values P-m = 0.44 for poly(phenyl acrylate) a nd P-m = 0.48 for poly(4-fluorophenyl acrylate). The C-13 n.m.r. spect ra recorded in deuterated benzene showed well-resolved signals for car bonyl carbon, methine carbon and methylene carbon. The assignments wer e made on the basis of Bernoullian statistics, with good agreement bet ween the experimental and calculated values for both polyacrylates.