Solid State Behavior of Linear Polyesters and Polyamides |
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Page 39
[ °C ] • O ODO 215 Crystallization conditions for prepolymer Do ( Amorphous ) 1 .
337 170 = 1 . 380 230 À 5 1 . 392 1 . 393 250 o 1 . 400 0 30 60 90 120 Time [ min
] Figure 8 . Dependence of the number average molecular weight Mn on the ...
[ °C ] • O ODO 215 Crystallization conditions for prepolymer Do ( Amorphous ) 1 .
337 170 = 1 . 380 230 À 5 1 . 392 1 . 393 250 o 1 . 400 0 30 60 90 120 Time [ min
] Figure 8 . Dependence of the number average molecular weight Mn on the ...
Page 152
With this model , then , the modulus of the fiber is determined solely by the
modulus of the microfibril , which in turn is determined by the combination of the
moduli of the alternating amorphous and crystalline regions when they are
loaded ...
With this model , then , the modulus of the fiber is determined solely by the
modulus of the microfibril , which in turn is determined by the combination of the
moduli of the alternating amorphous and crystalline regions when they are
loaded ...
Page 172
Factors Affecting the Shift of Amorphous , Unoriented T , to that in Crystalline
Oriented Samples Degree of crystallinity , % 67 70 Amorphous orientation (
Integral breadth in degrees of the Size of azimuthal intensity Long amorphous
distribution ...
Factors Affecting the Shift of Amorphous , Unoriented T , to that in Crystalline
Oriented Samples Degree of crystallinity , % 67 70 Amorphous orientation (
Integral breadth in degrees of the Size of azimuthal intensity Long amorphous
distribution ...
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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