Gel formation of solutions of fibrillar proteins during flow in a longitudinal field |
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| Authors: | A A Kholmuminov S O Eshbekova A Ya Malkin |
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| Institution: | 1.Institute of Polymer Chemistry and Physics,Uzbek Academy of Sciences,Tashkent,Uzbekistan;2.Topchiev Institute of Petrochemical Synthesis,Russian Academy of Sciences,Moscow,Russia |
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| Abstract: | The effect of gel formation in the jets of salt-containing solutions of fibrillar proteins (silk fibroin and wool keratin)
in a longitudinal hydrodynamic field modeling the process of natural-silk formation in silk glands is studied. Structural
transformations in macromolecules are monitored via birefringence measurements, optical rotatory dispersion, and polarization
ultramicroscopy. Gel formation under the action of a longitudinal rate gradient is accompanied by the α → β-conformation transition
and by the attainment of high degrees of orientation. |
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