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Influence of co‐monomer structure on properties of co‐polyamide packaging films
Author(s) -
Scarfato P.,
Di Maio L.,
Incarnato L.,
Acierno D.,
Mariano A.
Publication year - 2002
Publication title -
packaging technology and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 50
eISSN - 1099-1522
pISSN - 0894-3214
DOI - 10.1002/pts.561
Subject(s) - polyamide , monomer , caprolactam , materials science , rheology , polymerization , polymer , polymer chemistry , composite material , chemical engineering , engineering
In this work a series of co‐polyamides were prepared by random polymerization of ϵ‐caprolactam in presence of four different co‐monomers at a percentage of 5% w/w, with the aim of verifying their suitability as film‐forming materials. The effects of structural changes induced in the ϵ‐caprolactam homopolymer by co‐monomers were evaluated in both molten and solid states. Rheological tests in shear and elongational flow were performed to evaluate the processability of co‐polyamides. Cast films were obtained and their thermal, mechanical and transport properties were evaluated to establish the performances of the co‐polyamides in view of packaging applications. The results indicate that co‐polyamide films having a partially aromatic structure display the best mechanical performances and show a significant improvement in barrier properties to gases compared to the homopolymer. Copyright © 2002 John Wiley & Sons, Ltd.