Solid State Behavior of Linear Polyesters and Polyamides |
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Page 134
ially oriented polymer structures suggest that microfibrils are essential and
probably unavoidable products of the conversion ... In the microfibrilar structure ,
the crystallite length along the microfibril aris is always about 2 , 3 of the loag
period .
ially oriented polymer structures suggest that microfibrils are essential and
probably unavoidable products of the conversion ... In the microfibrilar structure ,
the crystallite length along the microfibril aris is always about 2 , 3 of the loag
period .
Page 136
microfibrillar model , according to which the modulus is dependent on degree of
crystallinity only , cannot be applied to ... Peterlin proposes that the PE fiber ,
strength should be attributed primarily to the strength of the microfibrils , with the ...
microfibrillar model , according to which the modulus is dependent on degree of
crystallinity only , cannot be applied to ... Peterlin proposes that the PE fiber ,
strength should be attributed primarily to the strength of the microfibrils , with the ...
Page 149
In a drawing process where ( 1 ) the stretching of the microfibrils equals the
macroscopic stretching of the fiber , and ( 2 ) the fiber is incompressible , the
microfibril diameter and fiber length changes correlate according to D2 , L1 = Dm
. 2L2 ...
In a drawing process where ( 1 ) the stretching of the microfibrils equals the
macroscopic stretching of the fiber , and ( 2 ) the fiber is incompressible , the
microfibril diameter and fiber length changes correlate according to D2 , L1 = Dm
. 2L2 ...
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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