Poly(l-lactide)/poly(d-lactide)/bamboo fiber (BF) bio-composites with enhanced heat resistance, mechanical and rheological performance 


Vol. 25,  No. 11, pp. 4453-4467, Nov.  2024
10.1007/s12221-024-00753-8


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  Abstract

Natural-fiber-reinforced poly(lactic acid) (PLA) is a simple and effective method to improve properties with retaining the fully biodegradability and eco-friendliness. Herein, we prepared the poly(l-lactic acid) (PLLA)/poly(d-lactic acid) (PDLA)/bamboo fiber (BF) bio-composites through melt compounding. The stereocomplex PLA (SC-PLA) was formed during the melt blending. The SC-PLA crystals combined with BFs in the PLLA/PDLA/BF bio-composites had synergistic effects that could enhance crystallization rate, rheological and mechanical properties, and heat resistance. The results showed that the SC-PLA crystals drastically increased the nucleation density and accelerated the crystallization process of the bio-composites. The rheological properties of the bio-composites were obviously enhanced by the incorporation of BFs and PDLA. Mechanical properties of the bio-composites were increased compared to neat PLLA. The bio-composite with 10 wt% PDLA showed tensile strength of 72.4 MPa, and Young’s modulus of 2855 MPa, which were 9.4% and 18% higher than those of neat PLLA, respectively. Moreover, Vicat softening temperature (VST) of the bio-composites was about 90 °C higher than that of neat PLLA. Overall, this work provides an interesting strategy of fabrication of the BFs reinforced PLA composites with controllable properties.

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  Cite this article

[IEEE Style]

C. Han, Y. Li, H. Wang, H. Cheng, Y. Zhang, H. Wang, C. Han, "Poly(l-lactide)/poly(d-lactide)/bamboo fiber (BF) bio-composites with enhanced heat resistance, mechanical and rheological performance," Fibers and Polymers, vol. 25, no. 11, pp. 4453-4467, 2024. DOI: 10.1007/s12221-024-00753-8.

[ACM Style]

Changyu Han, Yi Li, Haopeng Wang, Hongda Cheng, Ye Zhang, Huan Wang, and Changyu Han. 2024. Poly(l-lactide)/poly(d-lactide)/bamboo fiber (BF) bio-composites with enhanced heat resistance, mechanical and rheological performance. Fibers and Polymers, 25, 11, (2024), 4453-4467. DOI: 10.1007/s12221-024-00753-8.

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pISSN : 1229 - 9197
eISSN : 1875 - 0052

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