Table 1.

Flexural modulus and relative density of some samples.

Reference	Sample Type	Texp (°C)	Pexp (Mpa)	Specific Stiffness, E/ρ (GPa/g·cm−3)
PHB	Matrix	-	-	1.11
Untreated/PHB	Precursor	-	-	1.78
	Foam	120	10	1.40
		140	10	1.47
		140	20	1.43
C/PHB	Precursor	-	-	1.75
	Foam	120	10	1.81
		140	10	1.74
		140	20	1.44
C-Ar20/PHB	Precursor	-	-	1.66
	Foam	120	10	1.23
		140	10	1.50
		140	20	1.43
CE-PHB	Matrix	-	-	1.41
Untreated/CE-PHB	Precursor	-	-	2.21
	Foam	120	10	1.48
		140	10	1.58
		140	20	1.37
C/CE-PHB	Precursor	-	-	2.42
	Foam	120	10	1.62
		140	10	1.64
		140	20	1.45
C-Ar20/CE-PHB	Precursor	-	-	2.04
	Foam	120	10	1.70
		140	10	1.65
		140	20	1.65