Accession Number:

ADA282497

Title:

A CRAMPS and 13C CP/MAS NMR Examination of Solid-Solid Transitions in n- Hexatriacontane (C36H74)

Descriptive Note:

Technical rept. 1 Jun 1993-31 May 1994

Corporate Author:

UNIVERSITY OF SOUTHERN MISSISSIPPI HATTIESBURG DEPT OF POLYMER SCIENCE

Personal Author(s):

Report Date:

1994-07-15

Pagination or Media Count:

3.0

Abstract:

The normal paraffins can undergo several transitions before melting and may thus serve as interesting model compounds for polyethylene, which also undergoes solid-solid transitions, the strongest and best-known being the so- called alpha transition. Our examination of n-Hexatriacontane C36 has been greatly furthered by the use of the solid-state 1H NMR technique known as CRAMPS Combined Rotation And Multiple Pulse Spectroscopy. This technique, combined with DSC and 13C CPMAS NMR, has allowed us to make tentative assignments for the molecular motions occurring at different temperatures below the melting point.

Subject Categories:

  • Organic Chemistry
  • Physical Chemistry
  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE