Tensile properties of PLLA/PCL composites filled with nanometer calcium carbonate
Tensile properties of PLLA/PCL composites filled with nanometer calcium carbonate
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DOI：
10.1016/j.polymertesting.2013.02.008
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发表时间：
2013-05-01
期刊：
影响因子：
5.1
通讯作者：
Chen, Da-Zhu
中科院分区：
文献类型：
--
作者：
Liang, Ji-Zhao;Duan, De-Rong;Chen, Da-Zhu
研究了纳米碳酸钙（nano-CaCO 3）填充聚L-乳酸（PLLA）和聚己内酯（PCL）复合材料在室温和不同拉伸速率下的拉伸性能。随着PCL质量分数的增加，PLLA/PCL/nano-CaCO 3复合材料的拉伸弹性模量、拉伸强度和断裂拉伸强度呈非线性下降，随拉伸速率的增加略有增加。当PCL质量分数小于60%时，复合材料的断裂伸长率略有增加，然后急剧增加。这表明PCL有利于提高复合材料的拉伸断裂韧性。(C)2013爱思唯尔有限公司保留所有权利。
The tensile properties of poly (L-lactic acid) (PLLA) and polycaprolactone (PCL) composites filled with nanometer calcium carbonate (nano-CaCO3) were measured at room temperature and different tensile rates. With increase of the PCL weight fraction, the tensile elastic modulus, tensile strength and tensile strength at fracture for the PLLA/PCL/nano-CaCO3 composites decreased nonlinearly, and it increased slightly with increasing tensile rate. When the PCL weight fraction was less than 60%, the elongation at break for the composites increased slightly and then it increased sharply. This indicated that PCL was beneficial to improve the tensile fracture toughness of the composites. (C) 2013 Elsevier Ltd. All rights reserved.