Evaluation of Properties and Biodeterioration Potential of Polyethylene and Aliphatic Polyester Blends
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A. V. Machado
Abstract
Blends of high density polyethylene (HDPE) and biodegradable polymers – polylactic acid, PLA, poly(∊-caprolactone), PCL and Mater-Bi® (thermoplastic starch (TPS) with PLA or PCL) – were prepared in a co-rotating twin-screw extruder, together with polyethylene modified with maleic anhydride (PE-g-MA) used as compatibiliser. The mechanical and rheological properties, morphology and potential for biodeterioration of polymeric materials were evaluated. Blends with PLA showed a reduced elongation at break but an increased Young's modulus while the addition of PCL led to materials with a greater elongation at break and a lower Young modulus. The rheological results evidenced that HPDE and the blend with the highest TPS level exhibited the highest viscosity. The microbial growth test carried out to evaluate the potential for biodeterioration of the blends, using a pure culture of Pseudomonas fluorescens, indicated that HDPE/PCL had a lower resistance to bacterial attack than the blend of HDPE/PLA. This was verified by a higher cell number on its surface after 10 weeks of incubation. The addition of 30% starch to the HDPE/PLA blend enhanced its biodeterioration potential, the same was not observed in the case of the HDPE/PCL blend containing just 18% starch.
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Articles in the same Issue
- Contents
- Contents
- Editorial
- Special Issue on Biobased Polymers
- Invited Papers
- Crystallization and Mechanical Propertiesof Poly (D, L) Lactide-based Blown Films
- Rheological Behavior and Modeling of Thermal Degradation of Poly(∊-Caprolactone) and Poly(L-Lactide)
- Rheological Evaluation and Observations of Extrusion Instabilities of Biodegradable Polyesters
- Biaxial Orientation of Polylactide/Thermoplastic Starch Blends
- Effects of Starch Types on Mechanical Properties of Poly(lactic acid)/Starch Composites
- Solid and Microcellular Polylactide-Carbon Nanotube Nanocomposites
- Tapioca Starch-poly (lactic acid)-based Nanocomposite Foams as Affected by Type of Nanoclay
- Injection Molded Solid and Microcellular Polylactide Compounded with Recycled Paper Shopping Bag Fibers
- Fabrication of Porous 3-D Structure from Poly(L-lactide)-based Nanocomposite Foam via Enzymatic Degradation
- The Linear Viscoelastic Behavior of a Series of 3-Hydroxybutyrate-based Copolymers
- New Developments in Biodegradable Starch-based Nanocomposites
- Viscous Properties of Thermoplastic Starches from Different Botanical Origin
- Thermoplastic Foams from Zein and Gelatin
- Improvement of the Mechanical Properties of Soy Protein Isolate Based Plastics through Formulation and Processing
- Biocomposites Based on Bacterial Cellulose and Apple and Radish Pulp
- Preparation and Properties of Metallocene-catalyzed PE/Starch Nanocomposites: Role of Nanocompatibilizer
- Evaluation of Properties and Biodeterioration Potential of Polyethylene and Aliphatic Polyester Blends
- PPS News
- PPP News
- Seikei-Kakou Abstracts
- Seikei-Kakou Abstracts
Articles in the same Issue
- Contents
- Contents
- Editorial
- Special Issue on Biobased Polymers
- Invited Papers
- Crystallization and Mechanical Propertiesof Poly (D, L) Lactide-based Blown Films
- Rheological Behavior and Modeling of Thermal Degradation of Poly(∊-Caprolactone) and Poly(L-Lactide)
- Rheological Evaluation and Observations of Extrusion Instabilities of Biodegradable Polyesters
- Biaxial Orientation of Polylactide/Thermoplastic Starch Blends
- Effects of Starch Types on Mechanical Properties of Poly(lactic acid)/Starch Composites
- Solid and Microcellular Polylactide-Carbon Nanotube Nanocomposites
- Tapioca Starch-poly (lactic acid)-based Nanocomposite Foams as Affected by Type of Nanoclay
- Injection Molded Solid and Microcellular Polylactide Compounded with Recycled Paper Shopping Bag Fibers
- Fabrication of Porous 3-D Structure from Poly(L-lactide)-based Nanocomposite Foam via Enzymatic Degradation
- The Linear Viscoelastic Behavior of a Series of 3-Hydroxybutyrate-based Copolymers
- New Developments in Biodegradable Starch-based Nanocomposites
- Viscous Properties of Thermoplastic Starches from Different Botanical Origin
- Thermoplastic Foams from Zein and Gelatin
- Improvement of the Mechanical Properties of Soy Protein Isolate Based Plastics through Formulation and Processing
- Biocomposites Based on Bacterial Cellulose and Apple and Radish Pulp
- Preparation and Properties of Metallocene-catalyzed PE/Starch Nanocomposites: Role of Nanocompatibilizer
- Evaluation of Properties and Biodeterioration Potential of Polyethylene and Aliphatic Polyester Blends
- PPS News
- PPP News
- Seikei-Kakou Abstracts
- Seikei-Kakou Abstracts