Thermal behavior of aryl‐aliphatic polyamides

摘要

AbstractLow molecular weight poly(p‐phenylene sebacamides) and (m‐phenylene sebacamides) were prepared by interfacial polycondensation by varying the concentration ofp‐andm‐phenylenediamine in the initial feed. The polymers were characterized by intrinsic viscosity measurement and IR spectra. The relative thermal stability was evaluated by differential thermal analysis and dynamic thermogravimetry in air and nitrogen atmospheres. A systematic dependence of stability on intrinsic viscosity of poly(m‐phenylene sebacamide) was observed indicating an endgroup initiation of degradation. No such dependence was observed in poly(p‐phenylene sebacamide). A probable mechanism for the thermal degradation has be