scholarly journals Dynamics and rheology of a supercooled polymer melt in shear flow

2002 ◽  
Vol 117 (5) ◽  
pp. 2359-2367 ◽  
Author(s):  
Ryoichi Yamamoto ◽  
Akira Onuki
Keyword(s):  
Shear Flow ◽  
Polymer Melt

Influence of interchain interactions on the tumbling of chains in a polymer melt during shear flow

2020 ◽  
Vol 64 (4) ◽  
pp. 941-954
Author(s):  
Tingyu Xu ◽  
Xiaoliang Tang ◽  
Fucheng Tian ◽  
Wei Chen ◽  
Liangbin Li
Keyword(s):  
Shear Flow ◽  
Polymer Melt ◽  
Interchain Interactions

Measuring Normal Stress Differences in Polymer Melt Shear Flow

1989 ◽  
Vol 33 (6) ◽  
pp. 843-864 ◽  
Author(s):  
J. Meissner ◽  
R. W. Garbella ◽  
J. Hostettler
Keyword(s):  
Shear Flow ◽  
Normal Stress ◽  
Polymer Melt ◽  
Normal Stress Differences

Polymer Morphology Revealed by Staining Techniques

1981 ◽  
Vol 39 ◽  
pp. 340-341
Author(s):  
A. C. Reimschuessel ◽  
V. Kramer
Keyword(s):  
Polymer Melt ◽  
Nylon 6 ◽  
Morphological Features ◽  
Negative Staining ◽  
Polymer Morphology ◽  
Crystallizable Polymer ◽  
Staining Techniques ◽  
Long Chain

Staining techniques can be used for either the identification of different polymers or for the differentiation of specific morphological domains within a given polymer. To reveal morphological features in nylon 6, we choose a technique based upon diffusion of the staining agent into accessible regions of the polymer.When a crystallizable polymer - such as nylon 6 - is cooled from the melt, lamellae form by chainfolding of the crystallizing long chain macromolecules. The regions between adjacent lamellae represent the less ordered amorphous domains into which stain can diffuse. In this process the lamellae will be “outlined” by the dense stain, giving rise to contrast comparable to that obtained by “negative” staining techniques.If the cooling of the polymer melt proceeds relatively slowly - as in molding operations - the lamellae are usually arranged in a radial manner. This morphology is referred to as spherulitic.

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