Patent ID: 8906488

Claim:
A flexible thermoplastic film comprising: a tertiary blend of 1) about 1 wt. % to about 95 wt. % of a polyalkylene carbonate and 2) about 95 wt. % to about 1 wt. % of a thermoplastic cellulose derivative, respectively forming a either a major or minor component of said film, and 3) 5 wt. % to 17 wt. % of a polyhydroxyalkanoate (PHA) compatibilizer; wherein said film exhibits nanostructural features that are at least ⅓ to 1/10 of the size of corresponding structural morphology in a film formed from a binary blend of a precursor thermoplastic material of said polyalkylene carbonate and said thermoplastic cellulose derivative, absent said polyhydroxyalkanoate (PHA) compatibilizer, wherein said nanostructure features have a nano-dispersed fiber morphology and form one of two phases composed of either said polyalkylene carbonate or said thermoplastic cellulose derivative, whichever one of the two is present as a minority species in said majority component, wherein said film exhibits an elongation percent-at-break value that is increased by at least 150% to about 500% of a film formed from a binary blend of a polyalkylene carbonate and a thermoplastic cellulose derivative absent said polyhydroxyalkanoate (PHA) compatibilizer.