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Influence of EVA molar mass on preparation of EVA-g-PCL biobased copolymers

The rapid growth of plastic production is considered as a serious source of environment pollution. Approximately 100 million tons of plastics are produced each year and within a short period of time almost half are disposed to the environment. A way to overcome this problem would be the use of biodegradable polymers. Several attempts are made to replace synthetic polymers by biodegradable ones. Nevertheless, th...

UV stability of biobased copolymers

Diagnóstico do espaço turístico e das propostas de gestão no município de Cacho...

2009

Uso e cobertura da terra da bacia hidrográfica do rio Guapi - Macacu.

2008

Biodegradability assessment of aliphatic polyesters using standard methods

Important information concerning polymer’s final fate in the environment can be achieved in biodegradation studies performed in the aquatic environment. In this context, the focus of the present work was to evaluate the biodegradability level of blends containing aliphatic polyesters using standard methods. Blends of high density polyethylene (HDPE) and five biodegradable polymers (poly(lactic acid) (PLA), poly...

Preparation of biodegradable materials by reactive extrusion

This work aimed to prepare biodegradable polymeric materials based on blends of a synthetic high density polyethylene (HDPE) and biodegradable polymers such as polylactic acid (PCL) and poly(caprolactone) (PLA), in a co-rotating twin-screw extruder. A polyethylene modified with maleic anhydride was used as compatibiliser. The mechanical results showed that the addition of PLA improves the blends stiffness while...

Estoque de carbono nos solos do Brasil.

O presente trabalho foi desenvolvido com o objetivo de estimar o estoque de carbono no solo no Brasil considerando os diferentes tipos de solo sob diferentes sistemas de uso e distribuídos nos diversos biomas brasileiros. ; 2007

Estoque de Carbono nos solos do Brasil.

2007

Preparation of biodegradable materials by reactive extruction

Evaluation of the biodegradability of blends of polyethylene and aliphatic poly...