Shear Rate Dependeuce of Flow Birefringence of Polymer Solutions

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概要

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• The shear rate dependence of flow birefringence of polymer solutions is discussed by making use of the recent statistical theory of flexible random coiling molecule with an assumption of optical interaction between molecular segments in solvent. The result of calculation shows that the form anisotropy of polymer molecule decreases relatively to the intrinsic anisotropy with increasing shear rate and this property explains the anomalous shear rate dependences of birefringence and extinction angle, observed recently with dioxane solutions of large molecular weight polystyrene by Frisman and Tsvetkov. The molecular configuration obtained by calculation shows a non-coin-cidence between the anisotropy of segments-orientation and that of molecular shape-deformation in solution shear, and this confirms the anomaly of extinction angle calculated. The same calculation also shows the expansion of molecular volume by the shear, which accounts for the decrease of form anisotropy due to optical interaction in large shear rates.

• 社団法人日本物理学会の論文
• 1964-09-05

著者

• Koyama Ryuzo

  Institute For Chemical Research Kyoto University:(present) Department Of Physics School Of Liberal A

関連論文

• Shear Rate Dependeuce of Flow Birefringence of Polymer Solutions

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