Mechanical Properties and Morphology of Poly(l-Lactic acid)/Nano-CaCO3 Composites

J. Z. Liang; D. R. Duan; Chak Yin Tang; Chi Pong Tsui; D. Z. Chen; S. D. Zhang

doi:10.1007/s10924-014-0661-z

Mechanical Properties and Morphology of Poly(l-Lactic acid)/Nano-CaCO₃ Composites

J. Z. Liang, D. R. Duan, Chak Yin Tang, Chi Pong Tsui, D. Z. Chen, S. D. Zhang

Research output: Journal article publication › Journal article › Academic research › peer-review

20 Citations (Scopus)

Abstract

The tensile and impact properties of poly(l-lactic acid) composites filled with nanometer calcium carbonate (nano-CaCO₃) were measured at room temperature. The results showed that the tensile elastic modulus increased roughly linearly while the tensile yield strength, tensile fracture strength and tensile elongation at break (δ_b) decreased nonlinearly with increasing the nano-CaCO₃ weight fraction (W_f); when W_f was constant, the δ_b increased with increasing tensile rates. Both the V-notched Izod impact strength and V-notched Charpy impact strength showed the non-linear increase with increasing W_f. The impact fracture surface was observed by means of a scanning electronic microscope to understand the toughening mechanisms.

Original language	English
Pages (from-to)	21-29
Number of pages	9
Journal	Journal of Polymers and the Environment
Volume	23
Issue number	1
DOIs	https://doi.org/10.1007/s10924-014-0661-z
Publication status	Published - 1 Jan 2015

Keywords

Biopolymer
Mechanical properties
Particle-reinforcement
Polymer-matrix composites

ASJC Scopus subject areas

Environmental Engineering
Polymers and Plastics
Materials Chemistry

More information

10.1007/s10924-014-0661-z

Cite this

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abstract = "The tensile and impact properties of poly(l-lactic acid) composites filled with nanometer calcium carbonate (nano-CaCO3) were measured at room temperature. The results showed that the tensile elastic modulus increased roughly linearly while the tensile yield strength, tensile fracture strength and tensile elongation at break (δb) decreased nonlinearly with increasing the nano-CaCO3 weight fraction (Wf); when Wf was constant, the δb increased with increasing tensile rates. Both the V-notched Izod impact strength and V-notched Charpy impact strength showed the non-linear increase with increasing Wf. The impact fracture surface was observed by means of a scanning electronic microscope to understand the toughening mechanisms.",

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AU - Zhang, S. D.

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AB - The tensile and impact properties of poly(l-lactic acid) composites filled with nanometer calcium carbonate (nano-CaCO3) were measured at room temperature. The results showed that the tensile elastic modulus increased roughly linearly while the tensile yield strength, tensile fracture strength and tensile elongation at break (δb) decreased nonlinearly with increasing the nano-CaCO3 weight fraction (Wf); when Wf was constant, the δb increased with increasing tensile rates. Both the V-notched Izod impact strength and V-notched Charpy impact strength showed the non-linear increase with increasing Wf. The impact fracture surface was observed by means of a scanning electronic microscope to understand the toughening mechanisms.

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