Correlation between impact strength and fractal dimensions of fracture surface for PLLA/nano-CaCO3 composites

被引：10

作者：

Liang, Ji-Zhao ^{[1
]}

Duan, De-Rong ^{[1
]}

Tang, Chak-Yin ^{[2
]}

Tsui, Chi-Pong ^{[2
]}

机构：

[1] S China Univ Technol, Sch Mech & Automot Engn, Res Div Green Funct Mat & Equipment, Guangzhou 510640, Guangdong, Peoples R China

[2] Hong Kong Polytech Univ, Dept Ind & Syst Engn, Hong Kong, Hong Kong, Peoples R China

来源：

POLYMER TESTING | 2014年 / 35卷

关键词：

Polymer-matrix composites; Fracture toughness; Statistical method; Fractography; NANOMETER CALCIUM-CARBONATE; MECHANICAL-PROPERTIES; TENSILE PROPERTIES; NANOCOMPOSITES; ROUGHNESS;

D O I：

10.1016/j.polymertesting.2014.03.004

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The V-notched Izod impact strength of poly-L-lactide composites filled with nanosized calcium carbonate was measured at room temperature. The fractal dimensions of the impact fracture surface were determined by means of the structure function method, and the relationship between the measured impact strength and the fractal dimensions of the specimen fracture surface was investigated. The results showed that the fractal dimensions of the fracture surface were within the range of about 1.76 to 1.97, all of the correlation coefficients were higher than 0.9, the strong linear correlation indicated that the fractal characterization of the fracture surface for the composites was significant, the measured impact strength increased obviously with increasing fractal dimension of the fracture surface and the correlation between them was roughly linear when the fractal dimension was more than 1.88. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：109 / 115

页数：7

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