Morphology, mechanical and dynamic mechanical properties of recycled high density polyethylene and poly(vinyl alcohol) blends

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...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 2009, Vol.62 (1), p.33-43
Main Authors: Brandalise, Rosmary N., Zeni, Mara, Martins, Johnny D. N., Forte, Maria M.C.
Format: Article
Language:English
Subjects:
Applied sciences
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Compatibility
Compatibilizers
Complex Fluids and Microfluidics
Dynamic mechanical analysis
Dynamic mechanical properties
Exact sciences and technology
High density polyethylenes
Maleic anhydride
Mechanical properties
Organic Chemistry
Physical Chemistry
Physical tests
Polyethylene
Polymer blends
Polymer industry, paints, wood
Polymer Sciences
Polymers
Polyvinyl alcohol
Soft and Granular Matter
Technology of polymers
Tensile strength
Thermodynamic properties
Waste treatment
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Summary: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.
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-008-0989-4