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Shear-Induced Novel Structure in Phase Separated Polybutadiene/Polyisoprene Blends



H Jeon, A Nakatani, Charles C. Han


We studied the shear-induced phase formation (SIPF) or phase inversion (SIPI) of viscoelastic polybutadiene (LPB)/polyisoprene (HPI) blends by light scattering, microscopy, and rheology. We found a coexisting structure, which is corresponding to **walnut-like** scattering pattern in Fourier-space, by small angle light scattering (SALS) and phase contrast optical microscopy (PCOM) at a fixed composition. A coexisting structure is composed of two different periodic structures: string-like domain and anisotropic domain (butterfly-like pattern in Fourier-space) with small characteristic length scales,
ACS PMSE Preprint


light scattering, microscopy, morphology, polybutadiene, polyisoprene, polymer blends, shear dependence


Jeon, H. , Nakatani, A. and Han, C. (2000), Shear-Induced Novel Structure in Phase Separated Polybutadiene/Polyisoprene Blends, ACS PMSE Preprint, [online], (Accessed May 30, 2024)


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Created January 1, 2000, Updated February 17, 2017