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壳聚糖分子对共沉淀法合成羟基磷灰石/壳聚糖粉体材料晶体形貌的影响
引用本文:杨辉,张园园.壳聚糖分子对共沉淀法合成羟基磷灰石/壳聚糖粉体材料晶体形貌的影响[J].人工晶体学报,2012,41(1):209-214.
作者姓名:杨辉  张园园
作者单位:陕西科技大学生命科学与工程学院,西安,710021
基金项目:陕西省教育厅自然科学专项基金项月,陕西科技大学博士科研启动基金
摘    要:采用沸腾水浴共沉淀法,以尿素为pH调节剂制备羟基磷灰石/壳聚糖(HA/CS)复合粉体材料,通过XRD、FTIR和SEM对晶体组成、形貌进行表征,考察了壳聚糖平均分子量、添加量及反应物浓度对HA/CS晶体形貌的影响。结果表明,沸腾水浴共沉淀法可在较短时间内制备HA/CS复合粉体,改变反应物浓度可使晶体形貌由针状与球状同时存在转变为几乎全部是球状晶体,而CS平均分子量和添加量的影响较小。

关 键 词:羟基磷灰石/壳聚糖复合粉体材料  共沉淀法  壳聚糖  晶体形貌

Effects of CS Molecules on the Morphology of HA/CS Composite Powders Prepared by Co-precipitation Method
YANG Hui , ZHANG Yuan-yuan.Effects of CS Molecules on the Morphology of HA/CS Composite Powders Prepared by Co-precipitation Method[J].Journal of Synthetic Crystals,2012,41(1):209-214.
Authors:YANG Hui  ZHANG Yuan-yuan
Institution:(School of Life Science and Engineering,Shaanxi University of Science and Technology,Xi’an 710021,China)(Received 28 November 2011,accepted 28 December 2011)
Abstract:A co-precipitation method and urea as pH regulator were used in boiling water bath to prepare HA/CS composite powders.The crystal component,chemical composition and morphologies of the composite were characterized by XRD,FTIR and SEM.The effects of CS average molecular weight,CS addition and concentration of reaction solution on the crystal morphology were investigated.The results indicated that HA/CS composite powders can be prepared in short time by boiling water bath co-precipitation.The concentration of reaction solution has significant influence on the crystal morphology,and the morphology of HA/CS composite crystal changed from needle-like and sphere to almost all spherical shape.CS average molecular weight and CS addition have slight effect on the morphology of HA/CS.
Keywords:HA/CS composite powders  co-precipitation  chitosan  crystal morphology
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