Solid State Behavior of Linear Polyesters and Polyamides |
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Page 79
To this author ' s knowledge , there are no measurements of radial distribution
functions in polyester melts . Nor are there extant measurements of chain
conformations or coil sizes . If one assumes , however , that the melt cannot be
more ...
To this author ' s knowledge , there are no measurements of radial distribution
functions in polyester melts . Nor are there extant measurements of chain
conformations or coil sizes . If one assumes , however , that the melt cannot be
more ...
Page 262
Fracture Toughness as a Function of Material - Related Parameters 3 . 2 . 1 .
Matrices Molecular Weight and Crystallinity It has been shown for amorphous
glassy polymers that Gic increases with the weight average molecular weight (
Mw ) in ...
Fracture Toughness as a Function of Material - Related Parameters 3 . 2 . 1 .
Matrices Molecular Weight and Crystallinity It has been shown for amorphous
glassy polymers that Gic increases with the weight average molecular weight (
Mw ) in ...
Page 292
6 Matrix 40 10 SEN - B - Ky = 5 - 11 Ky is investigated in function of the notch tip
radius . Table 2 . continued Table 2 . continued Table 2. MATRIX T ( °C ) R .
FIBER CONTENT Ve TYPE WE ( vol % ) ( wt . % ) v ( mm / min ) METHOD (
specimen ) ...
6 Matrix 40 10 SEN - B - Ky = 5 - 11 Ky is investigated in function of the notch tip
radius . Table 2 . continued Table 2 . continued Table 2. MATRIX T ( °C ) R .
FIBER CONTENT Ve TYPE WE ( vol % ) ( wt . % ) v ( mm / min ) METHOD (
specimen ) ...
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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