Natural weathering evaluation of LDPE-mango starch blends by mechanical properties and high field NMR

The low-density polyethylene/mango starch blends were obtained and submitted a natural degradation. Their mechanical properties and structures changes were determined by tensile, low and high field nuclear magnetic resonance characterization after different weathering times. The exposition time and starch content could be correlated to the polymer matrix changes from void formation theories. The blend deformations were affected by the starch degradation time. The starch degradation, confirmed by nuclear magnetic resonance, could be able to form voids and improve the blends fragmentability at relative low weathering times.