文献类型：期刊文献

英文题名：Calcium phosphate cement reinforced by polypeptide copolymers

作者：Lin, Jiaping[1]; Zhang, Suning[1]; Chen, Tao[1]; Liu, Changshen[1]; Lin, Shaoliang[1]; Tian, Xiaohui[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

年份：2006

卷号：76B

期号：2

起止页码：432

外文期刊名：JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS

收录：;EI(收录号：2006069680940);WOS:【SCI-EXPANDED(收录号:WOS:000234834700025)】；

语种：英文

外文关键词：calcium phosphate cement; polypeptide copolymer; micelle; composite

摘要：Water-based calcium phosphate with bone repairing capability was reinforced by polypeptide graft copolymers and micelles that were formed by polypeptide copolymers. The mechanical studies showed that the compression strength and fracture energy of the calcium phosphate cement (CPC)/polypeptide composites are appreciably higher than those of CPC. The molecular structure of the polypeptide graft copolymers and the association form of the polypeptide copolymers exhibit a marked effect on the mechanical properties of CPC/polypeptide composites. The polypeptide copolymers with more hydrophilic side chains and with core-shell micelle forms have more effective reinforcement effect. The morphological studies based on the scanning electron microscope (SEM) observations revealed that both polypeptide graft copolymers and polypeptide copolymer micelles are well dispersed in CPC matrix. According to the obtained experimental results', reinforcement mechanism was suggested. (c) 2005 Wiley Periodicals, Inc.