摘要
对C/PLA复合材料的体外降解特性进行了研究。考察了该复合材料在降解过程中吸水率、质量损失和宏观力学性能的变化 ,并与PLA进行了对比。结果表明 ,与PLA相比 ,C/PLA复合材料的吸水率增加 ,质量损失下降 ,弯曲强度和剪切强度的下降速率减小。在体外降解过程中 ,C/PLA复合材料的界面发生降解 。
In vitro degradation behavior of C/PLA composite has been investigated. Variations of water uptake, mass loss and mechanical properties of this composite with degradation time were compared with those of the pristine PLA. Results showed that the C/PLA composite demonstrated higher water uptake, lower mass loss and slower decreasing rate in bending strength and shear strength in comparison with the raw PLA. Interfacial bending strength of the C/PLA composite declined with degradation time. Interfacial weakening of the C/PLA was mainly responsible for its deterioration in mechanical properties.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2001年第5期553-555,共3页
Journal of Functional Materials
基金
教育部博士点基金 (990 0 560 6)
天津市自然科学基金 (99360 2 2 1 1 )项目
关键词
聚乳酸
碳纤维
复合材料
体外降解
力学性能
骨折
polylactic acid
carbon fiber
composites
degradation in vitro
mechanical properties
