A perspective on biodegradable polymer biocomposites - from processing to degradation

Functional Composite Materials

Table 4 Hildebrand solubility parameters for a range of polymers (where PBAT is poly(butylene adipate-co-terephthalate)

Polymer	Hildebrand solubility parameter (MPa^1/2)	Reference
Cellulose	32.0	[40]
Kraft lignin	24–31	[41]
PHB	18.7–19.3	[42]
PLA	20.7 19.9	[43] [44, 45]
PBAT	21.9	[43]
PCL	19.1	[40, 45]
PE	16.6	[40]