13C and 14N Solid State NMR Characterization of Aramid-Containing Nylon-6 Polymers Synthesized by In Situ Polymerization of Caprolactam with Benzoyl Caprolactam Derivatives.
Abstract
Copolyamides were prepared by in situ polymerization from p-Aminobenzoylcaprolactam and caprolactam systems initiated with sodium hydride. The microstructure of the copolymers as determined by 13C solution NMR varied from alternating to blocks of aliphatic and/or aromatic units depending on the reaction conditions and the ratio of th comonomers. The solid-state CP/MAS 13C NMR were consistent with solution studies. Detailed interpretation was difficult due to large linewidth and number resonances. Natural abundance CP/MAS 15N spectra were found to less complicated. Based on these results an 15N studies with model amides, 15N CP/MAS was shown to be a useful technique for probing copolymer composition and microstructure.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1987
- Accession Number
- ADA187067
Entities
People
- Allison M. Sikes
- Douglas G. Powell
- Lon J. Mathias
Organizations
- University of Southern Mississippi