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Preparation and properties of terpolymers of ethylene, vinyl acetate and vinyl alcohol
Author(s) -
Pérez Ernesto,
Luján Margarita,
Martínez de Salazar Javier
Publication year - 2000
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 - 10.1002/1521-3935(20000801)201:12<1323::aid-macp1323>3.0.co;2-7
Subject(s) - vinyl acetate , crystallinity , vinyl alcohol , ethylene vinyl acetate , polymer chemistry , copolymer , ethylene , polyethylene , vinyl polymer , alcohol , chemistry , materials science , organic chemistry , polymer , catalysis , crystallography
Several terpolymers of ethylene, vinyl acetate and vinyl alcohol have been prepared by controlled transformation into hydroxyls of the acetate groups of an ethylene‐vinyl acetate copolymer (with 28 wt.‐% in vinyl acetate). The degree of transformation has been determined by 1 H NMR. Samples covering the entire range of transformations have been obtained, and their properties have been analyzed by DSC and X‐ray diffraction. The results show a marked increase of both melting temperature and crystallinity as the degree of transformation increases, owing to the fact that the vinyl alcohol units are able to cocrystallize in the polyethylene lattice, while the acetate groups are excluded.