LDPE/PHB blends filled with castor oil pressed cake

AUTOR(ES)

Burlein, Gustavo A. D., Rocha, Marisa C. G.

FONTE

Mat. Res.

DATA DE PUBLICAÇÃO

08/10/2013

RESUMO

Blends of PHB and LDPE were prepared by melt mixing in a twin screw extruder. Castor oil pressed cake (CC) was used as filler for the blends. The mixture design technique was used to evaluate the effect of the components proportion on the materials flexural properties. The results show that superior LDPE flexural properties may be obtained by the addition of PHB or castor oil cake to LDPE. Biodegradation was evaluated burying the samples in simulated soil for different periods of time. The ternary mixtures with higher content of PHB showed more pronounced degradation. Under the experimental conditions studied the LDPE/CC compositions presented no degradation. However, the loss of mass of the LDPE/PHB/CC ternary mixtures was higher than the loss of mass of the corresponding LDPE/PHB binary mixture. This result suggests that the castor oil cake accelerates the degradation of the LDPE/PHB mixtures.

Documentos Relacionados

• Mechanical and morphological properties of LDPE/ PHB blends filled with castor oil pressed cake
• Low Density Polyethylene (LDPE) blends based on Poly(3-Hydroxi-Butyrate) (PHB) and Guar Gum (GG) biodegradable polymers
• Heterogeneous catalysis afford biodiesel of babassu, castor oil and blends
• Evaluation of the properties of iron oxide-filled castor oil polyurethane
• Influence of Moringa oleifera derivates in blends of PBAT/PLA with LDPE