摘要
利用羟基磷灰石(HA)表面的羟基与甲基丙烯酸发生酯化反应,在HA表面化学键合地引入了可进一步发生聚合反应的活性双键,然后在紫外光引发作用下与甲基丙烯酸发生自由基聚合。研究了经表面有机化改性HA与聚乙烯醇共混材料的力学性能和断面结构。结果表明,光引发方法成功地在HA表面引入了聚甲基丙烯酸接枝聚合物,实现了HA粒子的表面有机化改性。与纯HA相比,表面有机化改性的HA能够有效的改善聚乙烯醇的力学性能并且在聚乙烯醇基体中分散均匀,团聚程度减小,与基体界面相互作用增加,相容性能得到显著改善。
Unsaturated double bond functional group was chemically inserted onto the surface of hydroxypatite （HA） particles by esterification reaction with methacrylic acid, then the surface organic modificated hydroxypatite particals were prepared through UV irradiation polymerization reation of methacrylic acid onto its surface. The results of ESCA, FTIR, particle size analysis and SEM tests showed the surfaces of hydroxypatite particles were successfully free-radical polymerized with methacrylic acid. Compared with pure HA, the modified HA could effectively improve the mechanical properities of PVA, and disperse homogeneously in PVA matrix, resulted in decreasing of aggregation, increasing of interracial action with the matrix, and obvious improving of compatibility..
出处
《塑料工业》
CAS
CSCD
北大核心
2008年第1期14-16,24,共4页
China Plastics Industry
关键词
羟基磷灰石
甲基丙烯酸
表面有机化改性
光引发
Hydroxypatite
Methacrylic Acid
Surface Organic Modification
Photoinitiation
