| Autor: |
Rosmary N. Brandalise, Mara Zeni, Johnny D. N. Martins, Maria M.C. Forte |
| Předmět: |
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| Zdroj: |
Polymer Bulletin; Jan2009, Vol. 62 Issue 1, p33-43, 11p |
| Abstrakt: |
Summary Blends of post-consumer high density polyethylene (HDPEr) and poly(vinyl alcohol) (PVA) were prepared with maleic anhydride-grafted HDPEr (HDPEr-AM), as the compatibilizer, to evaluate the effectiveness of the PVA as a modifier for polyethylene and influence of PVA concentration on the blend properties. Films of polyethylene having biodegradable polymers could be a good solution for agricultural purpose since they can degrade more easily. The blends HDPEr/HDPEr-AM/PVA were investigated by physical tests, dynamic-mechanical analysis (DMA) and scanning electron microscopy (SEM). Thermal properties were measured by means of differential scanning calorimetry (DSC). The blend HDPEr/HDPEr-AM/PVA (50/10/40) with 10wt% of compatibilizer showed the highest tensile strength (28 MPa) compared to the blends (60/40) without compatibilizer (11 MPa). On the other hand, morphologic analysis showed synergism of the polymers in the blend HDPEr/HDPEr-AM/PVA (30/10/60), with 10wt% of compatibilizer. Overall, it was observed that the blend HDPEr/HDPEr-AM/PVA with composition of (70/10/20) showed the best properties for agricultural films processing application. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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