Microhardness of condensation polymers and copolymers. 2. Poly(ester ether carbonate) thermoplastic terpolymers

Modeling of Chain Sequence Distribution in Thermoplastic Condensation Terpolymers

This paper presents a kinetic model for the calculation of polymer chain sequence length distribution in a multi-component step-growth polymerization toward the synthesis of bisphenol A co-polycarbonate. The polymerization system consists of three different types of monomers with two kinds of reactive end groups (e.g. A = phenyl carbonate group, B = hydroxyl group), AR1A, BR2B, and BR3B. The ki...

Understanding Rheology of Thermoplastic Polymers

1 AAN013 shear rate behavior. For example, gauge variation can be caused by variable post-extrusion die swell, and warpage can occur from non-uniform relaxation during cooling of an improperly formulated injection molding compound. Also, by testing at low enough shear rates so that the measurements are in the melt’s linear viscoelastic region, the data can be linked directly to the polymer’s mo...

Properties and performance of flax yarn/ thermoplastic polyester composites

Aiming at demonstrating the potential of unidirectional natural fiber-reinforced thermoplastic composites in structural applications, textile flax yarn/thermoplastic polyester composites with variable fiber volume fractions have been manufactured by a filament-winding process followed by a vacuum-assisted compression molding process. The microstructure of the composites shows that the flax fibe...

Mechanical Behavior of Filled Thermoplastic Polymers

Characterization of Thermo-Mechanical and Fracture Behaviors of Thermoplastic Polymers

In this paper the effects of the strain rate on the inelastic behavior and the self-heating under load conditions are presented for polymeric materials, such as polymethyl methacrylate (PMMA), polycarbonate (PC), and polyamide (PA66). By a torsion test, it was established that the shear yield stress behavior of PMMA, PC, and PA66 is well-described by the Ree-Eyring theory in the range of the co...