Fracture toughness improvement of poly(lactic acid) with silicon carbide whiskers

2016 ◽  
Vol 24 (11) ◽  
pp. 961-964 ◽  
Author(s):  
Shan-Shan Yao ◽  
Qing-Qing Pang ◽  
Rui Song ◽  
Fan-Long Jin ◽  
Soo-Jin Park
Keyword(s):  
Fracture Toughness ◽  
Silicon Carbide ◽  
Lactic Acid ◽  
Poly Lactic Acid ◽  
Silicon Carbide Whiskers ◽  
Toughness Improvement

scholarly journals Fracture Toughness Improvement of Poly(lactic acid) Reinforced with Poly(ε-caprolactone) and Surface-Modified Silicon Carbide

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Jie Chen ◽  
Tian-Yi Zhang ◽  
Fan-Long Jin ◽  
Soo-Jin Park
Keyword(s):  
Fracture Toughness ◽  
Silicon Carbide ◽  
Lactic Acid ◽  
Poly Lactic Acid ◽  
External Energy ◽  
Solution Blending ◽  
Blending Method ◽  
Sic Whiskers ◽  
Sic Composites ◽  
Surface Modified

In this study, bio-based poly(lactic acid) (PLA)/polycaprolactone (PCL) blends and PLA/PCL/silicon carbide (SiC) composites were prepared using a solution blending method. The surface of the SiC whiskers was modified using a silane coupling agent. The effects of the PCL and SiC contents on the flexural properties, fracture toughness, morphology of PLA/PCL blends, and PLA/PCL/SiC composites were investigated using several techniques. Both the fracture toughness and flexural strength of PLA increased by the introduction of PCL and were further improved by the formation of SiC whiskers. Fracture surfaces were observed by scanning electron microscopy, which showed that the use of PCL as a reinforcing agent induces plastic deformation in the PLA/PCL blends. The SiC whiskers absorbed external energy because of their good interfacial adhesion with the PLA matrix and through SiC-PLA debonding in the PLA/PCL/SiC composites.

Effect of Annealing on Fracture Mechanism of Biodegradable Poly(lactic acid)

2004 ◽  
Vol 261-263 ◽  
pp. 105-110 ◽  
Author(s):  
Sang Dae Park ◽  
Mitsugu Todo ◽  
Kazuo Arakawa
Keyword(s):  
Fracture Toughness ◽  
Lactic Acid ◽  
Crack Growth ◽  
Fracture Mechanism ◽  
Poly Lactic Acid ◽  
Crack Growth Behavior ◽  
Annealing Conditions ◽  
Macroscopic Fracture ◽  
Biodegradable Poly ◽  
Static Fracture

Effect of annealing on the fracture behavior of poly(lactic acid) (PLA) was investigated. Fracture toughness of PLA samples prepared under different annealing conditions was measured under static and dynamic loadings. Microstructure and crack growth behavior were characterized by polarizing microscopy (POM). Crystallinity was determined by DSC analysis. Fracture surface morphology was also studied by scanning electron microscopy. It was shown that the static fracture toughness increased with increase of crystallinity, while the dynamic toughness increased as crystallinity increased. POM exhibited that craze formation played an important role in the fracture mechanism of amorphous samples. Macroscopic fracture toughness and microscopic crack growth mechanism were correlated on the basis of these experimental results, and effect of annealing on the toughness and mechanism were discussed.

Effect of annealing on the fracture toughness of poly(lactic acid)

2004 ◽  
Vol 39 (3) ◽  
pp. 1113-1116 ◽  
Author(s):  
Sang-Dae Park ◽  
M. Todo ◽  
K. Arakawa
Keyword(s):  
Fracture Toughness ◽  
Lactic Acid ◽  
Poly Lactic Acid
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