Factorial Study of Compressive Mechanical Properties and Primary In Vitro Osteoblast Response of PHBV/PLLA Scaffolds

Table 1

Low levels (−) and high levels (+) of variables in the fractional factorial design.

Levels
Factors	−	+
(A) Polymer concentration (%)	7.5	10
(B) Water phase fraction	0.5	0.66
(C) Composition of PLLA in PHBV	50/50	75/25
(D) Amount of HA (%)	5	10
(E) Molecular weight of PLLA (dL g^−1)	1.6	1.9