国家自然科学基金31070859,31370979;黑龙江省自然科学基金重点项目ZD201008;黑龙江省高校创新团队建设计划项目2012TD010生物医用材料及其表面改性Funding:the National Natural Science Foundation of China, No.31070859,31370979;the Natural Science Foundation of Heilongjiang Province, No. ZD201008;the Innovation Team Construction Plan in High Education of Heilongjiang Province, No.2012TD010