Study of the propagation centre in the anionic polymerization of lactams, 1. Spectroscopic and theoretical study of the activated monomer in dimethyl sulfoxide | Zendy

Kříž Jaroslav | Zendy; Stehlíček Jaroslav | Zendy; Dybal Jiří | Zendy; Hauer Jan | Zendy; Schmidt Pavel | Zendy

Premium

Study of the propagation centre in the anionic polymerization of lactams, 1. Spectroscopic and theoretical study of the activated monomer in dimethyl sulfoxide

Author(s) -

Kříž Jaroslav,

Stehlíček Jaroslav,

Dybal Jiří,

Hauer Jan,

Schmidt Pavel

Publication year - 1996

Publication title -

macromolecular chemistry and physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.57

H-Index - 112

eISSN - 1521-3935

pISSN - 1022-1352

DOI - 10.1002/macp.1996.021970204

Subject(s) - chemistry , dimethyl sulfoxide , dimer , monomer , solvation , dissociation (chemistry) , mndo , polymer chemistry , raman spectroscopy , anionic addition polymerization , nuclear magnetic resonance spectroscopy , sulfoxide , polymerization , photochemistry , polymer , molecule , organic chemistry , physics , optics

Solutions of Li, Na and K salts of 3,3‐dimethyl‐2‐piperidone and ε‐caprolactam in dimethyl sulfoxide‐ d 6 were studied by 6 Li, 7 Li, 23 Na, 1 H and 13 C NMR, Raman spectroscopy and MNDO molecular orbital calculations. Using NMR relaxation, the dynamics and equilibrium states of solvation, dissociation and cation exchange were clarified. At concentrations above, 0,1 mol/L, molecular aggregation to a dimer and possibly higher aggregates has been found.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research