羟基磷灰石/聚丙烯腈光接枝复合膜的制备与表征  

Preparation and characterization of hydroxyapatite/polyacrylonitrile photografting composite film

作　　者：王晓[1] 杨启鹏[1] 邵伟[1] 崔永珠[1] 徐明媚[1] 

机构地区：[1]大连工业大学纺织与材料工程学院,辽宁大连116034

出　　处：《纺织学报》2012年第4期24-28,共5页Journal of Textile Research

基　　金：辽宁省自然科学基金项目(20082151);教育部留学归国人员启动基金项目(教外司留(2009)1001号);辽宁省教育厅重点实验室项目(2008S014)

摘　　要：为改善复合材料中羟基磷灰石与聚丙烯腈间的界面结合性,采用丙烯酸对羟基磷灰石进行表面改性,且经紫外光引发含有不饱和双键的改性羟基磷灰石接枝到聚丙烯腈上复合成膜,并与共混复合膜进行对比。采用红外光谱、扫描电镜和差热分析对改性羟基磷灰石和改性羟基磷灰石/聚丙烯腈复合膜进行表征。分析复合膜的强力和吸附性能。改性羟基磷灰石在1 631 cm-1处出现的—C O振动峰表明羟基磷灰石与丙烯酸发生了酯化反应并实现表面改性。改性羟基磷灰石呈纳米级均匀地包埋于聚丙烯腈基质中。改性羟基磷灰石/聚丙烯腈光接枝复合膜的强力大于共混复合膜,吸附量略小于共混复合膜。The aim of this study is to improve the interface compatibility between hydroxyapatite and polyacrylonitrile in the composite.Surface modification of hydroxyapatite using acrylic acid is performed.The composite film is prepared via phografting the modified hydroxyapatite containing unsaturated double bond onto the polyacrylonitrile which is compared with the blended film.The modified hydroxyapatite and modified hydroxyapatite/polyacrylonitrile comoposite films are characterized using Fourier transform infrared spectroscopy,scanning electron microscopy and differential thermal analysis.The appearance of —C-O vibration peak at 1 631 cm-1 confirms the surface modification of hydroxyapatite via esterification of hydroxyapatite and acrylic acid.Well-dispersed nanoscale particles of the modified hydroxyapatite are embedded in polyacrylonitrile substrate.The tensile strength of polyacrylonitrile/modified hydroxyapatite photografting composite film is higher than the blended one except the adsorption capacity.

关 键 词：羟基磷灰石 聚丙烯腈 表面改性 紫外光接枝 复合材料 

分 类 号：TB34[一般工业技术—材料科学与工程]