13C and 15N Solid State MMR Characterization of Aramid-Containing Nylon-6 by In Situ Polymerization 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 the comonomers. The solid-state CP/MAS 13C NMR were consistent with solution studies. Detailed interpretation was difficult due to large linewidth and number of resonances. Natural abundance CP/MAS 15N spectra were found to less complicated. Based on these results and 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
- ADA188953
Entities
People
- Allison M. Sikes
- Douglas G. Powell
- Lon J. Mathias
Organizations
- University of Southern Mississippi