The addition of 4% P-VMT and VMT to Ecobras resulted in a slight increase in thermal stability of composites S2 and S3 when compared to the pure matrix. For composites S2 and S3, the initial temperatures of thermal decomposition at 10% weight loss were 289 1C and 291 1C, respectively, compared to 272 1C for the pure matrix, suggesting that P-VMT and VMT interact preferentially with the starch phase. Interestingly, the S3 composite showed the lowest moisture absorption.