Molecular Motions in Low Molar-Mass Alkyl Amides: Models for Molecular Motions in Polyamides
Abstract
Sub-melting transitions are well known for normal alkanes fatty acids, biological lipid membranes, and normal alkyl ammonium salts. The transitions are thought to involve crystallographic changes, formation of rotator phases, the onset of conformational disorder, or partial melting of portions of the alkyl residues before collapse of the crystal occurs. Understanding these transitions is fundamental to knowing what gives rise to lipid membrane fluidity or crystal-crystal transitions in commercial thermoplastics. Several techniques used in the analysis of these transitions are variable temperature FT-IR, Raman, DSC, X-ray, and solid-state NMR. Each technique gives a particular piece of evidence leading to a better understanding of molecular-level events
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 15, 1994
- Accession Number
- ADA283966
Entities
People
- C. G. Johnson
- J. Muthiah
- Lon J. Mathias
Organizations
- University of Southern Mississippi