Structure of n,3 Polyamides, a Group of Nylons with Two Spatial Hydrogen-Bond Orientations

Models are presented for the family of n,3 polyamides. They have an organization in space quite different from the usual α and γ forms of polyamides. Hydrogen-bonded sheets are not present in the n,3 polyamides. The molecules are linked by an unique network of hydrogen bonds with two spatial orienta...

Full description

Saved in:
Bibliographic Details
Published in:Macromolecules 1996-12, Vol.29 (25), p.8170-8179
Main Authors: Puiggalí, J, Aceituno, J. E, Navarro, E, Campos, J. L, Subirana, J. A
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Structure, morphology and analysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Models are presented for the family of n,3 polyamides. They have an organization in space quite different from the usual α and γ forms of polyamides. Hydrogen-bonded sheets are not present in the n,3 polyamides. The molecules are linked by an unique network of hydrogen bonds with two spatial orientations which form an angle of about 120°. The different organization of the molecules when n = odd (orthorhombic) and n = even (monoclinic) is shown to be due to the optimization of the hydrogen-bond geometry. The polymethylene segments deviate somewhat from an all-trans conformation.
ISSN:0024-9297
1520-5835
DOI:10.1021/ma960069k