Rheological Behavior and Modeling of Thermal Degradation of Poly(∊-Caprolactone) and Poly(L-Lactide)
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A. López Arraiza
Abstract
Growing environmental concerns have led to the development of alternative biodegradable polymers with properties comparable to the conventional poly(ethylene), poly(propylene) or poly(ethylene terephthalate). In this paper the thermal degradation of poly(∊-caprolactone) (PCL) and poly(L-lactide) (PLLA) melts was investigated by rheometry and thermogravimetry under different temperatures and inert atmosphere. The chain scission process was modeled to explain the phenomenon. The analysis suggests that PLLA is degraded by an unzipping depolymerization process from the hydroxyl end of the polymer chains. In contrast, the thermal degradation behavior of PCL was very complex because various reactions occurred concurrently: post-polymerization, loss of structural regularities and random chain scissions.
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© 2007, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- 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
Artikel in diesem Heft
- 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