Continuous polymerization of polyetheramide tri-block copolymer in a modular intermeshing counter-rotating twin screw extruder

Polyetheramide tri-block copolymers have been polymerized in a modular counter-rotating twin screw extruder under a range of processing conditions, including temperature profiles and screw speeds. Polyetheramide tri-block copolymers had not been previously polymerized in a twin screw extruder. Thermal analysis and viscosity measurements clearly demonstrated that the formed copolymers have two separated domains arising from two different block segments. Studies were also made of melt: spinning polyetheramide tri-block copolymer into oriented filaments. The formed filaments were characterized using birefringence. The melt spun fibers of polyetheramide tri-block copolymer showed higher elongation than those of polyamide 6 due to the existence of elastomers.