You are tasked with designing composite $3$D printed alginate$/$PCL

scaffolds for a tissue engineering application $($Fig Q$1$c$).$ The compressive

moduli of the alginate hydrogel and PCL polymer are $50$ kPa and $60$ MPa,

respectively.

i$.$ Estimate how much alginate and PCL should be included in the

scaffold $($in relative terms$)$ to match native compressive modulus

of articular cartilage $(2$ MPa$).$ State all assumptions you make for

your estimation.

$[8]$

ii$.$ Based on your scaffold design, estimate how much strain

chondrocytes embedded in the alginate bioink phase will

experience under an applied stress of $0\mathrm{.}03$ MPa