RT info:eu-repo/semantics/article
T1 New Insights in the Synthesis of High-Molecular-Weight Aromatic Polyamides-Improved Synthesis of Rod-like PPTA
A1 Hernández, Guiomar
A1 Ferrero, Sergio
A1 Reinecke, Helmut
A1 Bartolomé Albistegui, María del Camino
A1 Martínez de Ilarduya Martínez de Ilarduya, Jesús María
A1 Álvarez Colomo, Cristina
A1 Lozano, Ángel E.
K1 Polyamidation
K1 DFT molecular simulation
K1 Poliamidación
K1 Simulación molecular DFT
K1 23 Química
AB By employing a variation of the polyamidation method using in situ silylated diamines and acid chlorides, it was possible to obtain a rod-type polyamide: poly(p-phenylene terephthalamide) (PPTA, a polymer used in the high-value-added material Kevlar), with a molecular weight much higher than that obtained with the classical and industrial polyamidation method. The optimization of the method has consisted of using, together with the silylating agent, a mixture of pyridine and a high-pKa tertiary amine. The research was complemented by a combination of nuclear magnetic resonance and molecular simulation studies, which determined that the improvements in molecular weight derive mainly from the formation of silylamide groups in the growing polymer.
PB MDPI
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/59404
UL https://uvadoc.uva.es/handle/10324/59404
LA eng
NO International Journal of Molecular Sciences, 2023, 24(3), 2734;
NO Producción Científica
DS UVaDOC
RD 25-nov-2024