Solid State Behavior of Linear Polyesters and Polyamides

achieved acid additional amorphous annealing Appl applied aspect average behavior block bonding changes Chem chemical composites conclusion constant crack crystallinity crystallization curves decreases deformation density depends determined diameter diffusion direction distribution domains draw ratio drawn effect element energy Equation experiments extrusion factor fatigue fiber Figure fracture fracture toughness function given groups growth healing heat higher important increasing indicated initial length linear load lower material matrix maximum measurements mechanical melt method microfibrils microstructure modulus molded molecular weight molecules nylon nylon 66 observed obtained occurs orientation peak phase Phys polyamides polycondensation polyesters Polymer Sci polymerization properties range reaction regions reported Reprinted from Ref respectively samples SAXS scattering shows solid solid state polycondensation solid-state specimen speed stage strain strength stress structure studied Table temperature tensile units values yield