Synthesis of an inorganic-organic polymer blend from orthoboric acid and caprolactam

• Published in: Polymer Science. Series A Vol. 48; no. 3; pp. 228 - 233
• Main Authors: Shaulov, A. Yu, Skachkova, V. K., Salamatina, O. B., Rudnev, S. N., Shchegolikhin, A. N., Lomakin, S. M., Eichhoff, U., Steuernagel, S., Samoilenko, A. A., Berlin, A. A.
• Format: Journal Article
• Language: English
• Published: Oxford Springer Nature B.V 01.03.2006
• Subjects: Acids; Polymer blends; Solid solutions
• ISSN: 0965-545X; 1555-6107
• DOI: 10.1134/S0965545X06030035

The possibility of modifying boron polyoxide with an oligomeric amide upon thermal dehydration of orthoboric acid and oligomerization of caprolactam in a common melt is shown. The products obtained after thermal pretreatment of the initial blend containing 30 wt % caprolactam are investigated. It is shown that the main processes at T < 200°C are dehydration of orthoboric acid and hydrolysis of caprolactam with the formation of ε-aminocaproic acid. At temperatures of 225-260°C, the predominant process is the formation of boron polyoxide and a caprolactam-based oligomeric product. The data of ^sup 11^B NMR spectroscopy show that the chemical transformations of caprolactam occur against the background of the N:B donor-acceptor interaction. The two-dimensional [^sup 11^B-^sup 1^H] heteronuclear correlation spectrum indicates that the systems obtained upon thermal treatment are solid solutions.[PUBLICATION ABSTRACT]