Accession Number : ADA188953


Title :   13C and 15N Solid State MMR Characterization of Aramid-Containing Nylon-6 by In Situ Polymerization with Benzoyl Caprolactam Derivatives.


Descriptive Note : Technical rept.,


Corporate Author : UNIVERSITY OF SOUTHERN MISSISSIPPI HATTIESBURG DEPT OF POLYMER SCIENCE


Personal Author(s) : Powell, Douglas G ; Sikes, Allison M ; Mathias, Lon J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a188953.pdf


Report Date : 01 Dec 1987


Pagination or Media Count : 12


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.


Descriptors :   *AMIDES , *AROMATIC COMPOUNDS , *POLYMERIZATION , *NYLON , HYDRIDES , MICROSTRUCTURE , MODELS , RATIOS , RESONANCE , RESPONSE , SODIUM , SOLUTIONS(GENERAL) , SPECTRAL LINES


Subject Categories : Polymer Chemistry
      Organic Chemistry


Distribution Statement : APPROVED FOR PUBLIC RELEASE