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The determination of whether two dissimilar polymers are weldable is still largely trial-and-error. Here we suggest a correlation between laser weld strength and the ratio of the equilibrium interpenetration depth (w ∞ ) of two immiscible polymers to the maximum entanglement tube diameter of the two polymers (a max ). Taking the weld strength from a published chart of qualitative weld...
Transient and steady-state deformations and breakup of viscoelastic polystyrene droplets dispersed in viscoelastic high-density polyethylene matrices were observed in a simple steady shear flow between two transparent parallel disks. By separately varying the elasticities of the individual blend components, the matrix shear viscosity, and the viscosity ratio, their effects on the transient deformation,...
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