Solid State Behavior of Linear Polyesters and Polyamides |
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Page 119
Speeds up to 12 , 000 m / min have been reported , in contrast to normal
velocities of 3 , 000 - 4 , 000 m / min or lower . ( At the ... The critical speed at
which crystallization can be observed decreases with increasing molecular
weight and chain ...
Speeds up to 12 , 000 m / min have been reported , in contrast to normal
velocities of 3 , 000 - 4 , 000 m / min or lower . ( At the ... The critical speed at
which crystallization can be observed decreases with increasing molecular
weight and chain ...
Page 264
The effect of impact - modifier content on fracture toughness at different
crosshead speeds is demonstrated in Figure 12 . ... to a higher overall crystallinity
) Durethan BC 402 exhibits higher Ko values at low crosshead speed ( Figure
12a ) .
The effect of impact - modifier content on fracture toughness at different
crosshead speeds is demonstrated in Figure 12 . ... to a higher overall crystallinity
) Durethan BC 402 exhibits higher Ko values at low crosshead speed ( Figure
12a ) .
Page 281
Temperature and cross - head speed The mechanical response and thus failure
of semicrystalline thermoplastics [ 95 ] and ... A consequence of these restrictions
in segmental mobility is that increasing temperature at low crosshead speed ...
Temperature and cross - head speed The mechanical response and thus failure
of semicrystalline thermoplastics [ 95 ] and ... A consequence of these restrictions
in segmental mobility is that increasing temperature at low crosshead speed ...
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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