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13 C, 25 Mg and 11 B solid‐state NMR study of a fire retarded ethylene‐vinyl acetate copolymer
Author(s) -
Pécoul Nathalie,
Bourbigot Serge,
Revel Bertrand
Publication year - 1997
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19971190133
Subject(s) - copolymer , ethylene vinyl acetate , vinyl acetate , ethylene , materials science , polymer chemistry , zinc borate , hydroxide , boron , nmr spectra database , polybutadiene , nuclear chemistry , chemistry , inorganic chemistry , organic chemistry , polymer , fire retardant , catalysis , spectral line , physics , astronomy , composite material
Flame retardance of ethylene‐vinyl acetate copolymer (EVA) can be achieved using magnesium hydroxide (Mg(OH) 2 ) incorporated in the polymeric matrix. The adduct of small amount of zinc borate as synergistic agent in the formulation increases the fire‐proofing properties. Multinuclei solid‐state NMR appears as a powerful means to characterise materials before and after combustion. We show that endothermic dehydration, water vapour evolved and formation of a glassy coating provide the flame retardancy of interest to the polymeric matrix.