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Preparation of Crystallites for Oriented Poly(Lactic Acid) Films Using a Casting Method under a Magnetic Field
Shuta Hara1, Shuto Watanabe2, Kohki Takahashi3
1Department of Materials and Applied Chemistry, College of Science and Technology, Nihon University, 1-8-14 Kandasurugadai, Chiyoda-ku, Tokyo 101-8308, Japan. hara.shuta@nihon-u.ac.jp.
Polymers
|April 10, 2019
Summary
This study introduces a novel magnetic casting technique to orient Poly-l-lactic acid (PLLA) crystals. This method enhances PLLA
Area of Science:
- Materials Science
- Polymer Science
- Biomedical Engineering
Background:
- Poly-l-lactic acid (PLLA) possesses biocompatibility and piezoelectric properties, making it attractive for environmental, biomedical, and electronic applications.
- Recent research focuses on orienting PLLA crystals to unlock new applications, including high-strength fiberization and enhanced piezoelectric effects.
Purpose of the Study:
- To develop a new technique for orienting PLLA crystalline structures.
- To improve the crystallinity and orientation of PLLA films.
- To investigate the effect of magnetic irradiation on PLLA in a low-viscosity environment.
Main Methods:
- Developed a novel casting technique utilizing magnetic irradiation to orient PLLA crystals.
- Optimized heat treatment conditions to enhance low initial crystallinity.
- Prepared PLLA/1-butyl-3-methylimidazolium dibutylphosphate (bmimjdbp) composite films under identical conditions.
Main Results:
- Successfully produced PLLA films with a high degree of crystalline orientation and improved crystallinity.
- Demonstrated the effectiveness of magnetic irradiation in low-viscosity PLLA.
- Achieved further crystallinity enhancement in PLLA/bmimjdbp composite films.
Conclusions:
- The magnetic casting technique offers a viable method for orienting PLLA crystals, enhancing material properties.
- Optimized heat treatment and composite formation further improve PLLA crystallinity and orientation.
- This technique holds promise for advanced PLLA applications in various fields.
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