CN108727056B - 一种镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的制备方法 - Google Patents

一种镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的制备方法 Download PDF

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CN108727056B
CN108727056B CN201810691939.5A CN201810691939A CN108727056B CN 108727056 B CN108727056 B CN 108727056B CN 201810691939 A CN201810691939 A CN 201810691939A CN 108727056 B CN108727056 B CN 108727056B
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宋魏
张晶晶
张建波
夏庆欣
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Abstract

本发明公开了一种镁掺杂羟基磷灰石‑氧化锆生物陶瓷材料的制备方法,包括:(1)向二氯氧化锆溶液中加入碱溶液,调节溶液的pH值为10~12,在30~40℃水浴条件下进行磁力搅拌,反应2~3h,得到氢氧化锆溶胶;(2)将羟基磷灰石配制成3~5g/mL的羟基磷灰石乙醇溶液,然后加入球磨过的纳米碳酸镁粉末,搅拌均匀后,置入超声波中超声振荡20~40min,得到羟基磷灰石‑碳酸镁悬浮液;(3)将所述羟基磷灰石‑碳酸镁悬浮液滴加至所述氢氧化锆溶胶中,搅拌均匀后于室温下陈化24~48h,抽滤,分别采用无水乙醇和去离子水洗涤3~5次,干燥,于850~1100℃条件下熔融煅烧2~3h,得到镁掺杂羟基磷灰石‑氧化锆生物陶瓷材料。本发明中镁掺杂羟基磷灰石‑氧化锆生物陶瓷材料的孔隙率较高、力学性能好。

Description

一种镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的制备方法
技术领域
本发明涉及生物材料技术领域,特别是涉及一种镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的制备方法。
背景技术
羟基磷灰石(hydroxyapatite,HAP或HA)是一种生物活性陶瓷,其化学组成和结晶结构类似于人体骨骼中的磷灰石。HA分子中的Ca2+可以与含有羧基的氨基酸、蛋白质、有机酸等发生交换反应,具有良好的骨传导性能和生物活性,能与骨组织形成牢固的骨性结合促进骨骼生长,并且相态比较稳定,无毒性、发炎性,是公认的性能良好的骨修复替代材料。但单一组分的羟基磷灰石脆性大、韧性较差、力学性能不足,降解缓慢且易从植入位点迁移,这都限制了其作为人体材料种植体的使用。
与羟基磷灰石复合的增强体可分为陶瓷材料和金属材料,如:Al2O3、ZrO2、TiO2和生物玻璃等。但是,上述材料在与羟基磷灰石进行复合后,其孔隙率不理想。
为此,有必要针对上述问题,提出一种镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的制备方法,其能够解决现有技术中存在的问题。
发明内容
本发明的目的在于提供一种镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的制备方法,以克服现有技术中的不足。
为实现上述目的,本发明提供如下技术方案:
一种镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的制备方法,包括:
(1)向二氯氧化锆溶液中加入碱溶液,调节溶液的pH值为10~12,在30~40℃水浴条件下进行磁力搅拌,反应2~3h,得到氢氧化锆溶胶;
(2)将羟基磷灰石配制成3~5g/mL的羟基磷灰石乙醇溶液,然后加入球磨过的纳米碳酸镁粉末,搅拌均匀后,置入超声波中超声振荡20~40min,得到羟基磷灰石-碳酸镁悬浮液;
(3)将所述羟基磷灰石-碳酸镁悬浮液滴加至所述氢氧化锆溶胶中,搅拌均匀后于室温下陈化24~48h,抽滤,分别采用无水乙醇和去离子水洗涤3~5次,干燥,于850~1100℃条件下熔融煅烧2~3h,得到镁掺杂羟基磷灰石-氧化锆生物陶瓷材料。
优选的,步骤(1)中,所述碱溶液选自氨水溶液、氢氧化钠溶液、氢氧化钾溶液中的一种。
优选的,步骤(1)中,所述二氯氧化锆的制备方法包括:将锆酸钙溶解在浓盐酸中,加入硫酸和氨水生成碱式硫酸锆,将所述碱式硫酸锆悬浮于水中并加入氨水,所得氢氧化锆沉淀,溶于盐酸中制得二氯氧化锆水溶液,经过蒸发浓缩,再加浓盐酸,冷却至室温及过滤步骤,得到由此生成的二氯氧化锆晶体。
优选的,步骤(2)中,所述羟基磷灰石乙醇溶液的浓度为4g/mL。
优选的,步骤(2)中,所述纳米碳酸镁粉末的粒径为20~50nm。
优选的,步骤(2)中,每1L所述羟基磷灰石-碳酸镁悬浮液中含有所述纳米碳酸镁10~30g。
优选的,步骤(2)中,每1L所述羟基磷灰石-碳酸镁悬浮液中含有所述纳米碳酸镁20g。
优选的,步骤(3)中,所述羟基磷灰石-碳酸镁悬浮液与所述氢氧化锆溶胶的体积之比为1~5:1。
优选的,所述羟基磷灰石-碳酸镁悬浮液与所述氢氧化锆溶胶的体积之比为3:1。
与现有技术相比,本发明的优点在于:本发明中的方法制备得到的镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的孔隙率较高、力学性能好。
具体实施方式
本发明通过下列实施例作进一步说明:根据下述实施例,可以更好地理解本发明。然而,本领域的技术人员容易理解,实施例所描述的具体的物料比、工艺条件及其结果仅用于说明本发明,而不应当也不会限制权利要求书中所详细描述的本发明。
本发明公开一种镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的制备方法,包括:
(1)向二氯氧化锆溶液中加入碱溶液,调节溶液的pH值为10~12,在30~40℃水浴条件下进行磁力搅拌,反应2~3h,得到氢氧化锆溶胶;
(2)将羟基磷灰石配制成3~5g/mL的羟基磷灰石乙醇溶液,然后加入球磨过的纳米碳酸镁粉末,搅拌均匀后,置入超声波中超声振荡20~40min,得到羟基磷灰石-碳酸镁悬浮液;
(3)将所述羟基磷灰石-碳酸镁悬浮液滴加至所述氢氧化锆溶胶中,搅拌均匀后于室温下陈化24~48h,抽滤,分别采用无水乙醇和去离子水洗涤3~5次,干燥,于850~1100℃条件下熔融煅烧2~3h,得到镁掺杂羟基磷灰石-氧化锆生物陶瓷材料。
在一实施例中,所述二氯氧化锆的制备方法包括:将锆酸钙溶解在浓盐酸中,加入硫酸和氨水生成碱式硫酸锆,将所述碱式硫酸锆悬浮于水中并加入氨水,所得氢氧化锆沉淀,溶于盐酸中制得二氯氧化锆水溶液,经过蒸发浓缩,再加浓盐酸,冷却至室温及过滤步骤,得到由此生成的二氯氧化锆晶体。
下述以具体地实施例进行说明,以制备本发明中的镁掺杂羟基磷灰石-氧化锆生物陶瓷材料。
实施例1
(1)向二氯氧化锆溶液中加入碱溶液,调节溶液的pH值为10,在30℃水浴条件下进行磁力搅拌,反应2h,得到氢氧化锆溶胶;
(2)将羟基磷灰石配制成3g/mL的羟基磷灰石乙醇溶液,然后加入球磨过的纳米碳酸镁粉末,搅拌均匀后,置入超声波中超声振荡20min,得到羟基磷灰石-碳酸镁悬浮液,其中,每1L所述羟基磷灰石-碳酸镁悬浮液中含有所述纳米碳酸镁10g;
(3)将1体积所述羟基磷灰石-碳酸镁悬浮液滴加至1体积所述氢氧化锆溶胶中,搅拌均匀后于室温下陈化24h,抽滤,分别采用无水乙醇和去离子水洗涤3~5次,干燥,于850℃条件下熔融煅烧2h,得到镁掺杂羟基磷灰石-氧化锆生物陶瓷材料。
对实施例1中的方法制备得到的镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的抗压强度和断裂韧性进行测试,结果表明,上述实施例中的镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的抗压强度可达到565MPa,断裂韧性可达6.5MPa·m1/2,能够满足骨缺陷修复材料的要求。
实施例2
(1)向二氯氧化锆溶液中加入碱溶液,调节溶液的pH值为11,在35℃水浴条件下进行磁力搅拌,反应2.5h,得到氢氧化锆溶胶;
(2)将羟基磷灰石配制成4g/mL的羟基磷灰石乙醇溶液,然后加入球磨过的纳米碳酸镁粉末,搅拌均匀后,置入超声波中超声振荡30min,得到羟基磷灰石-碳酸镁悬浮液,其中,每1L所述羟基磷灰石-碳酸镁悬浮液中含有所述纳米碳酸镁20g;
(3)将3体积所述羟基磷灰石-碳酸镁悬浮液滴加至1体积所述氢氧化锆溶胶中,搅拌均匀后于室温下陈化36h,抽滤,分别采用无水乙醇和去离子水洗涤3~5次,干燥,于950℃条件下熔融煅烧2.5h,得到镁掺杂羟基磷灰石-氧化锆生物陶瓷材料。
对实施例2中的方法制备得到的镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的抗压强度和断裂韧性进行测试,结果表明,上述实施例中的镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的抗压强度可达到458MPa,断裂韧性可达5.9MPa·m1/2,能够满足骨缺陷修复材料的要求。
实施例3
(1)向二氯氧化锆溶液中加入碱溶液,调节溶液的pH值为12,在40℃水浴条件下进行磁力搅拌,反应3h,得到氢氧化锆溶胶;
(2)将羟基磷灰石配制成5g/mL的羟基磷灰石乙醇溶液,然后加入球磨过的纳米碳酸镁粉末,搅拌均匀后,置入超声波中超声振荡40min,得到羟基磷灰石-碳酸镁悬浮液,其中,每1L所述羟基磷灰石-碳酸镁悬浮液中含有所述纳米碳酸镁30g;
(3)将5体积所述羟基磷灰石-碳酸镁悬浮液滴加至1体积所述氢氧化锆溶胶中,搅拌均匀后于室温下陈化48h,抽滤,分别采用无水乙醇和去离子水洗涤3~5次,干燥,于1100℃条件下熔融煅烧3h,得到镁掺杂羟基磷灰石-氧化锆生物陶瓷材料。
对实施例3中的方法制备得到的镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的抗压强度和断裂韧性进行测试,结果表明,上述实施例中的镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的抗压强度可达到493MPa,断裂韧性可达5.8MPa·m1/2,能够满足骨缺陷修复材料的要求。
由上述实施例可知,本案实施例获得制备得到的镁掺杂羟基磷灰石-氧化锆生物陶瓷材料中,通过加入氧化锆,有效改善了该生物陶瓷材料的力学性能,而且发明人经大量实验意外的发现,实施例1的力学性能明显高于其他实施例。
综上所述,本发明中的方法制备得到的镁掺杂羟基磷灰石-氧化锆生物陶瓷材料中,通过加入氧化锆,有效改善了该生物陶瓷材料的力学性能;同时,通过加入碳酸镁,在高温熔融状态时碳酸镁可产生分解的气孔,从而能够改善该生物陶瓷材料的孔隙率。
最后,还需要说明的是,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。

Claims (4)

1.一种镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的制备方法,其特征在于,包括:
(1)向二氯氧化锆溶液中加入碱溶液,调节溶液的pH值为10~12,在30~40℃水浴条件下进行磁力搅拌,反应2~3h,得到氢氧化锆溶胶;
(2)将羟基磷灰石配制成3g/mL的羟基磷灰石乙醇溶液,然后加入球磨过的纳米碳酸镁粉末,搅拌均匀后,置入超声波中超声振荡20~40min,得到羟基磷灰石-碳酸镁悬浮液,其中,每1L所述羟基磷灰石-碳酸镁悬浮液中含有所述纳米碳酸镁10g;
(3)将所述羟基磷灰石-碳酸镁悬浮液滴加至所述氢氧化锆溶胶中,搅拌均匀后于室温下陈化24~48h,抽滤,分别采用无水乙醇和去离子水洗涤3~5次,干燥,于850~1100℃条件下熔融煅烧2~3h,得到镁掺杂羟基磷灰石-氧化锆生物陶瓷材料,所述羟基磷灰石-碳酸镁悬浮液与所述氢氧化锆溶胶的体积之比为1:1。
2.根据权利要求1所述的镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的制备方法,其特征在于,步骤(1)中,所述碱溶液选自氨水溶液、氢氧化钠溶液、氢氧化钾溶液中的一种。
3.根据权利要求1所述的镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的制备方法,其特征在于,步骤(1)中,所述二氯氧化锆的制备方法包括:将锆酸钙溶解在浓盐酸中,加入硫酸和氨水生成碱式硫酸锆,将所述碱式硫酸锆悬浮于水中并加入氨水,所得氢氧化锆沉淀,溶于盐酸中制得二氯氧化锆水溶液,经过蒸发浓缩,再加浓盐酸,冷却至室温及过滤步骤,得到由此生成的二氯氧化锆晶体。
4.根据权利要求1所述的镁掺杂羟基磷灰石-氧化锆生物陶瓷材料的制备方法,其特征在于,步骤(2)中,所述纳米碳酸镁粉末的粒径为20~50nm。
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