采用3-甲基丙烯酸丙酯-三甲氧基硅烷(A-174)、聚丙烯酸(PAA)分别对羟基磷灰石(HA)表面进行改性处理,通过溶液共混、取向模压成型技术制备出直径为3.2 mm的聚DL-丙交酯(PDLLA)/HA复合棒材.上述方法由于增进了复合材料在界面的相互作用,从而引起复合材料玻璃化转变温度升高,力学性能也得到了明显的改善.
Hydroxyapatite particles were modified by 3-(trimethoxysilyl) propyl methacrylate (A-174) and polyacrylic acid (PAA) in aqueous solutions respectively. Poly(DL-lactide)/hydroxyapatite(PDLLA/HA) composites were prepared by solution-dispersion compounding and composites rods with diameter 3.2 mm were achieved by oriented molding. Results showed that the glass transition temperature of PDLLA in composites and the bending strength of the composites were increased because of enhancement of the interfacial bonding of the composites.
参考文献
| [1] | Ylinen P. Filling of bone defects with porous hydroxyapatite reinforced with polylactide or polyglycolide fibres[J].J Mater Sci: Mater in Med, 1994,5(9): 522-528. |
| [2] | Verheyen C C P M, de Wijn J R, Van Blitterswijk C A, et al. Evaluation of hydroxyapatite / poly (l-lactide) composites:Mechanical behavior[J].J Biomed Mater Res, 1992,26: 1277-1296. |
| [3] | 全大萍, 李世普, 袁润章.聚DL-丙交酯/羟基磷灰石(PDLLA/HA)复合材料&&Ⅱ:硅烷偶联剂处理羟基磷灰石表面的作用研究[J].复合材料学报,2000,17(4):114-118. |
| [4] | Kulkarni P K, Paani K C, Neuman C, et al. polylactic acid for surgical implants[J].Arch Surg, 1966,93:839-843. |
| [5] | Torml P, Vasenius J, Vainionp S, et al. ultra-high-strength absorbable self-reinforced polyglycolide(SR-PGA) composite rod for internal fixation of bone fracture:in vitro and in vivo study[J].J Biomed Mater Res, 1991,25:1-22. |
| [6] | Van der Meer S A T, de Wijn J R A, Wolke J G C. The influence of basic siller materials on the degradation of amorphous d-and L-lactide copolymer.J Mater Sci: Mater in Med, 1996,7(9):359-361. |
| [7] | 全大萍, 卢泽俭, 廖凯荣, 等. 聚oll-丙交酯/羟磷灰石复合材料Ⅲ. 体内外降解性能研究. 功能高分子学报,2000,13(1):41-45. |
| [8] | Liu Q, de Wijn J R A, Bakker D, et al. Surface modification of hydroxyapatite to introduce interfacial bonding with polyactiveTM 70/30 in a biodegradabable composite[J]. J Mater Sci: Mater in Med, 1996,7(9):551-557. |
| [9] | Dupraz A M P, Van der Meer S A T, de Wijn J R A, et al. Biocompatibility screening of silane-treated hydroxyapatite powders, for use as filler in resorbable lomposites[J]. J Mater Sci: Mater in Med, 1996,7(12):731-738. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%