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Several different solvent systems are commonly used to dissolve Bombyx mori silk fibroin to prepare regenerated silk membranes and fibers though differences in the behavior of these solvents have not been fully investigated. Here we compare the effects of four of these on the rheology of silk fibroin solutions and on protein secondary structure as revealed by FTIR spectroscopy of cast membranes. The...
Spider silks are composite materials with often complex microstructures. They are spun from liquid crystalline dope using a complicated spinning mechanism which gives the animal considerable control. The material properties of finished silk are modified by the effects of water and other solvents, and spiders make use of this to produce fibres with specific qualities. The surprising sophistication...
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