Abstract
AbstractThe biodegradability, morphology, and mechanical properties of composite materials made of poly(butylene succinate adipate) (PBSA) and sugarcane bagasse (SCB) were evaluated. Composites containing maleic anhydride (MA)‐grafted PBSA (PBSA‐g‐MA/SCB) exhibited noticeably superior mechanical properties because of greater compatibility between the two components. The dispersion of SCB in the PBSA‐g‐MA matrix was highly homogeneous as a result of ester formation between the carboxyl groups of PBSA‐g‐MA and hydroxyl groups in SCB and the consequent creation of branched and crosslinked macromolecules. Each composite was subjected to biodegradation tests in a Rhizopus oryzae compost. Morphological observations indicated severe disruption of film structure after 60 days of incubation, and both the PBSA and the PBSA‐g‐MA/SCB composite films were eventually completely degraded. The PBSA‐g‐MA/SCB films were more biodegradable than those made of PBSA and exhibited a higher intrinsic viscosity, implying a strong connection between these characteristics and biodegradability. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
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