Preparation and Photo-Oxidation Aging Behavior of Oriented Polylactic Acid
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Z.-Q. Li
Abstract
This study employed solid hot stretching technology to produce successfully specifically oriented polylactic acid (PLA) while investigating the impact of orientation structure on its photo-oxidation aging properties. After orientation, the molecular weight and mechanical properties retention rate of PLA were improved, and the crystallinity (Xc) increased in conjunction with prolonged aging time, while the molecular orientation failed to modify the mechanism responsible for PLA deterioration. Furthermore, an examination regarding the way in which the photo-oxidation stability of PLA was enhanced, demonstrated that the increased Xc and structural orientation were beneficial for delaying the photo-oxidation aging of PLA.
Acknowledgements
This article was completed with the support of the National Natural Science Foundation of China Youth Fund Project (Grant No. 51803169), the Technology Transfer Demonstration Project of Sichuan Science and Technology Department (Grant No. 2020ZHCG0042), Ministry of Education Chunhui Program (Grant No. 192619), and the key project of Xihua University (Grant No. Z17105).
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Articles in the same Issue
- Contents
- Regular Contributed Articles
- Fiber Length Distribution in Twin-Screw Extrusion of Fiber-Reinforced Polymer Composites: A Comparison between Shear and Extensional Mixing
- The Effect of Nanosilicates on the Performance of Polyethylene Terephthalate Films Prepared by Twin-Screw Extrusion
- Synergistic Effect between Modified Graphene Oxide and Ammonium Polyphosphate on Combustion Performance, Thermal Stability and Mechanical Properties of Polylactic Acid
- Basic Study of Extensional Flow Mixing for the Dispersion of Carbon Nanotubes in Polypropylene by Using Capillary Extrusion
- Pulsed IR Heating of Thermoplastic Sheets for Thermoforming Applications
- Novel Design and Comparison of Structural and Modal Analyses of Auxetic Geometry versus Honeycomb Geometry
- Effect of Introducing Long Chain Branching on Fiber Diameter and Fiber Diameter Distribution in Melt Blowing Process of Polypropylene
- Study on the Relationship between the Bonding Surface and Mechanical Properties of PLA/Epoxy Laminated Composites
- A Study on Thermal and Electrical Conductivities of Ethylene-Butene Copolymer Composites with Carbon Fibers
- Model Approach for Displaying Dynamic Filament Displacement during Impregnation of Continuous Fibres Based on the Theory of Similarity – Theory and Modelling
- Using Symbolic Regression Models to Predict the Pressure Loss of Non-Newtonian Polymer-Melt Flows through Melt-Filtration Systems with Woven Screens
- Preparation and Photo-Oxidation Aging Behavior of Oriented Polylactic Acid
- Numerical Simulation and Process Optimization of a 3D Thin-Walled Polymeric Part Using Injection Compression Molding
- PPS News
- Seikei-Kakou abstracts
- PPS Membership application
Articles in the same Issue
- Contents
- Regular Contributed Articles
- Fiber Length Distribution in Twin-Screw Extrusion of Fiber-Reinforced Polymer Composites: A Comparison between Shear and Extensional Mixing
- The Effect of Nanosilicates on the Performance of Polyethylene Terephthalate Films Prepared by Twin-Screw Extrusion
- Synergistic Effect between Modified Graphene Oxide and Ammonium Polyphosphate on Combustion Performance, Thermal Stability and Mechanical Properties of Polylactic Acid
- Basic Study of Extensional Flow Mixing for the Dispersion of Carbon Nanotubes in Polypropylene by Using Capillary Extrusion
- Pulsed IR Heating of Thermoplastic Sheets for Thermoforming Applications
- Novel Design and Comparison of Structural and Modal Analyses of Auxetic Geometry versus Honeycomb Geometry
- Effect of Introducing Long Chain Branching on Fiber Diameter and Fiber Diameter Distribution in Melt Blowing Process of Polypropylene
- Study on the Relationship between the Bonding Surface and Mechanical Properties of PLA/Epoxy Laminated Composites
- A Study on Thermal and Electrical Conductivities of Ethylene-Butene Copolymer Composites with Carbon Fibers
- Model Approach for Displaying Dynamic Filament Displacement during Impregnation of Continuous Fibres Based on the Theory of Similarity – Theory and Modelling
- Using Symbolic Regression Models to Predict the Pressure Loss of Non-Newtonian Polymer-Melt Flows through Melt-Filtration Systems with Woven Screens
- Preparation and Photo-Oxidation Aging Behavior of Oriented Polylactic Acid
- Numerical Simulation and Process Optimization of a 3D Thin-Walled Polymeric Part Using Injection Compression Molding
- PPS News
- Seikei-Kakou abstracts
- PPS Membership application
