Microstructural study of poly(methyl methacrylate-co-n-propyl acrylate) by ¹³C NMR

Abstract

Analysis of carbonyl and β-CH₂ signals in the 100 MHz ¹³C NMR spectra of poly(methyl methacrylate-co-n-propyl acrylate) (PMMA/nPrA), provided distribution of configurational-compositional sequences for a series of the copolymer samples of different composition at pentad level for carbonyl signal and hexad level for the backbone methylene carbons. Computer simulation of the spectra based on incremental calculation of the chemical shifts for individual sequences provided very good agreement with the experimental spectra.

Keywords:

• ¹³C NMR spectroscopy
• distribution of configurational-compositional sequences
• poly(n-propyl acrylate) (PnPrA)
• poly(methyl methacrylate-co-n-propyl acrylate) (PMMA/nPrA)