Anelastic and Dielectric Effects in Polymeric Solids |
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Page 37
... Molecular Weight and Molecular - Weight Distribution Since polymerization reactions usually yield polymers having a very broad distribution of chain lengths , a polymer is ordinarily characterized by some average molecular weight . The ...
... Molecular Weight and Molecular - Weight Distribution Since polymerization reactions usually yield polymers having a very broad distribution of chain lengths , a polymer is ordinarily characterized by some average molecular weight . The ...
Page 552
... molecular - weight range 2 × 102 to 2x 106. These materials have narrow molecular - weight distributions up to molecular weights near 104 , but at higher molecular weights narrow fractions may only be obtained by careful fractionation ...
... molecular - weight range 2 × 102 to 2x 106. These materials have narrow molecular - weight distributions up to molecular weights near 104 , but at higher molecular weights narrow fractions may only be obtained by careful fractionation ...
Page 556
... molecular weight 2.8 x 106 ( Connor and others , 1964 ) △ " melt - crystallized , molecular weight 8-4 × 105 ( Connor and others , 1964 ) O " melt - crystallized , molecular weight 2.8 x 105 ( Connor and others , 1964 ) Mechanical G ...
... molecular weight 2.8 x 106 ( Connor and others , 1964 ) △ " melt - crystallized , molecular weight 8-4 × 105 ( Connor and others , 1964 ) O " melt - crystallized , molecular weight 2.8 x 105 ( Connor and others , 1964 ) Mechanical G ...
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Anelastic and Dielectric Effects in Polymeric Solids N. G. McCrum,Bryan Eric Read,Graham Williams (Ph.D.) No preview available - 1967 |
Common terms and phrases
acrylate activation energy amorphous polymers amorphous regions annealing atactic atoms bonds Chem copolymers crosslinked crystal crystalline crystalline polymers curves decrease degree of crystallinity density dielectric constant dielectric loss dielectric relaxation dipole distribution dyn/cm² Equation experimental Ferry glass transition glass-rubber relaxation Heijboer Illers Illers and Breuer increasing Ishida isotactic kcal/mole Log f c/s loss peak loss tangent magnitude main chain maxima maximum loss McCrum measurements mechanical relaxation methacrylate polymers methyl Mikhailov molecular weight molecules motions observed obtained occurs Phys plasticizer plots PMMA polyamides polydian carbonate polyethylene polymer chain Polymer Sci polymerization polymethyl methacrylate polypropylene polystyrene polyvinyl acetate PVAc PVOH relaxation region repeat unit rotation rubber Saito sample Schmieder and Wolf shear modulus shown in Figure side-group single relaxation specimen spherulites ẞ peak ẞ process ẞ relaxation stereoregularity stress relaxation studied syndiotactic Takayanagi Temperature dependence theory tion Yamafuji