PLA纤维增强HA/CS复合材料的制备与改性研究  

The Synthesis and Modification Research of Polylactic Acid Fiber Enhanced HA/CS Composite

作　　者：殷海荣[1,2] 祖全先[2] 赵高扬[1] 吴阳[2] 

机构地区：[1]西安理工大学材料科学与工程学院,陕西西安710048 [2]陕西科技大学材料科学与工程学院,陕西西安710021

出　　处：《西安理工大学学报》2012年第3期311-315,共5页Journal of Xi'an University of Technology

基　　金：国际科技合作基金资助项目(2009DFR50520)

摘　　要：采用半透性模具以原位沉析法制备了聚乳酸纤维增强的羟基磷灰石/壳聚糖(f(PLA)-HA/CS)复合板材,研究了纤维掺杂量以及戊二醛交联对复合材料性能的影响。通过红外吸收光谱、X-射线衍射、扫描电子显微镜等表征了材料结构与性能的关系。分析表明,复合物中生成了弱结晶态的羟基磷灰石,聚乳酸纤维与基体形成了较好的界面结合,材料的抗折强度明显增强,强度值随纤维量的增加先增后降,采用戊二醛交联可进一步提高复合物的抗折强度,可生产一类潜在的可完全降解型骨科材料。The hydroxyapatite/chitosan composite plate enhanced by polylactic acid fiber was synthesized via in-situ hybridization in the semipermeable mold.The fiber volume impact on the materials performance is discussed in this paper,and the effect upon glutaraldehyde and property is studied.FT-IR,XRD and SEM are used to determine the relevance between the composition and performance.The analytical results indicate that the hydroxyapatite with weak crystalline state is generated in the composites,and that a favourable interface combination is formed between the fiber and hydroxyapatite /chitosan matrix,which can obviously strengthen the flexurel strength with the intensity first increased and then decreased as an increase in fiber amount.The complex flexural strength can be further improved through the adoptation of glutaraldehyde cross-linking,so that this compostie is a potential and biodegradable orthopaedic materials.

关 键 词：羟基磷灰石 壳聚糖 聚乳酸纤维 原位沉析 戊二醛交联 

分 类 号：TB332[一般工业技术—材料科学与工程]