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纳米羟基磷灰石-明胶复合材料的制备与表征 被引量:3

Effect of pH on Preparation and Characterization of Nanohydroxyapatite-gelation Composite
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摘要 以Ca(NO3)2、(NH4)2HPO4及明胶为原料,在30℃不同pH条件下,采用原位复合法制备纳米羟基磷灰石-明胶复合材料。用XRD、FT-IR、扫描电镜和TG-DTG对复合材料的晶相组成、化学组成、微观形貌、晶粒尺寸等进行了分析。结果表明:复合材料是由弱结晶纳米级的羟基磷灰石和明胶组成,两相分布均匀。pH=8~9条件下制备的复合材料明胶含量相对更高,晶粒尺寸更小。 A nanocomposite of hydroxyapatite[HA]-gelatin[Gel] was prepared using the biomimetic process. The hydroxya- patite nano-particles were precipitated in aqueous solution of gelation at 30℃ and different pH. Crystallite phases, chem- ical composition, chemical bond, micro-morphology, erystallite size were characterized by XRD, b^F-IR, SEM, TG-DTG. The results showed that the composite consisted of nanosize hydroxyapatite with low crystallinity and gelatin. From DT/ DTG data, the increase in decomposition temperature indicates the formation of a primary chemical bond between hydrox- yapatite and gelatin. The better composites were obtained in precipitates prepared at pH 8-9.
作者 吴楠 王坤余
出处 《皮革科学与工程》 CAS 北大核心 2013年第4期5-8,共4页 Leather Science and Engineering
关键词 羟基磷灰石 明胶 PH 复合材料 hydroxyapatite gelatin pH composite
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