In this review we compare the biodegradation rates and mechanisms of the bioplastics thermoplastic starch, cellulose acetate and lignin based bioplastics with the biodegradation rates and mechanisms of starch, cellulose and lignin, which are the unmodified biopolymers from which these bioplastics are produced.  A change in higher level structure, as found in thermoplastic starch, only resulted in a limited number of differences in the biodegradation process. 
THERM