A blend of polystyrene by weight$)$ and polybutadiene by weight$)$ is

produced. Do you think that phase separation should take place? Which

morphology do you expect? Estimate a value of Young modulus of the final

product, considering ideal moduli of ${10}^9\frac{N}{m^2}$ and ${10}^6\frac{N}{m^2}$ for each one of

the polymers. What would be the module if the composition was the opposite?

What would be the moduli of a polystyrene to which $10\%$ of aligned glass

fibers were added $($modulus of $30{10}^9\frac{N}{m^2}).$