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Oxygen permeation through films of compatibilized polypropylene/polyamide 6 blends
Author(s) -
Beltrame Pier Luigi,
Citterio Cristiano,
Testa Giovanni,
Seves Alberto
Publication year - 1999
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19991121)74:8<1941::aid-app8>3.0.co;2-m
Subject(s) - polyamide , polypropylene , materials science , permeation , oxygen , compatibilization , oxygen permeability , polymer blend , composite material , polymer chemistry , chemical engineering , polymer science , copolymer , polymer , chemistry , membrane , organic chemistry , biochemistry , engineering
Abstract Polypropylene/polyamide 6 blends were prepared by melt mixing, without or with the addition of a suitable commercial product, a polypropylene grafted with 1% maleic anhydride, used as an interfacial modifier. The oxygen permeation through their films was studied as a function of temperature and the effect of the presence of the compatibilizer on the barrier properties of the material was examined. In addition, the diffusion coefficients were measured. The relationships between transport parameters and blend morphology were investigated by microscopic observations, together with chemical etchings, and a simple model was applied for interpreting the experimental permeation data. Differential scanning calorimetry was used in the determination of the degree of crystallinity of the blends. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 1941–1949, 1999