Highly Enhanced Mechanical, Thermal, and Crystallization Performance of PLA/PBS Composite by Glass Fiber Coupling Agent Modification

To improve the toughness and heat resistance of polylactic acid (PLA), polybutylene succinate (PBS) was sufficiently blended with PLA as the base matrix, and the glass fiber (GF) that was modified with 3-aminopropyltriethoxysilane (KF-GF) was added as the reinforcement. The results demonstrated a no...

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Bibliographic Details
Published in:Polymers 2023-07, Vol.15 (15), p.3164
Main Authors: Fan, Zhiqiang, Gao, Junchang, Wu, Yadong, Yin, Dewu, Chen, Shunxing, Tu, Hua, Wei, Tiantian, Zhang, Chaoran, Zhu, Haoxiang, Jin, Huile
Format: Article
Language:English
Subjects:
Acid resistance
Aminopropyltriethoxysilane
Biodegradable materials
Biodegradation
Bioplastics
Chemical bonds
Composite materials
Coupling agents
Crystallinity
Crystallization
Glass fiber reinforced plastics
Heat resistance
Impact strength
Injection molding
Interfacial bonding
Mechanical properties
Plastics
Polybutylenes
Polylactic acid
Polymers
Research methodology
Temperature
Tensile strength
Textiles
Thermal resistance
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Summary:To improve the toughness and heat resistance of polylactic acid (PLA), polybutylene succinate (PBS) was sufficiently blended with PLA as the base matrix, and the glass fiber (GF) that was modified with 3-aminopropyltriethoxysilane (KF-GF) was added as the reinforcement. The results demonstrated a noteworthy boost in both mechanical and heat resistance properties when employing KH-GF, in comparison to pristine GF. When the content of KH-GF reached 20%, the tensile, flexural, and IZOD impact strength of the composites were 65.53 MPa, 83.43 MPa, and 7.45 kJ/m , respectively, which were improved by 123%, 107%, and 189% compared to the base matrix, respectively. This enhancement was primarily attributed to the stronger interfacial adhesion between KH-GF and the PLA/PBS matrix. Furthermore, the Vicat softening temperature of the composites reached 128.7 °C, which was a result of increased crystallinity. In summary, the incorporation of KH-GF into PLA/PBS composites resulted in notable enhancements in their mechanical properties, crystallinity, and thermal characteristics. The high performance KH-GF-reinforced PLA/PBS composite showed a broad application potential in the field of biodegradable packaging, biodegradable textiles, and biodegradable plastic bags.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym15153164