Study of oriented block copolymers films obtained by roll-casting
作者： Marcelo A Villar , Daniel R Rueda , Fernando Ania , Edwin L Thomas
DOI: 10.1016/S0032-3861(02)00388-9
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摘要: Abstract Roll-casting orientation of cylinder microphase separated poly(styrene- b -butadiene- -styrene) triblock copolymers, was analyzed. The mechanical anisotropy roll-cast films, defined as the ratio Young's modulus obtained parallel and perpendicular to poly(styrene) cylinders, is similar for samples prepared using a dimensionless minimum gap between rolls higher than approximately 0.02. also characterized by measuring full width at half intensity maximum small angle X-ray scattering circle profiles showed good correlation with measurements. Blends diblock up 60 wt[percnt] show neat sample.
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