YAN Jun1， YAN Ping2， YU Danyan1，WANG Mengqing1， HU Xianchao3
(1. Inspection Center of Gold and Gem， Zhejiang Institute of Quality Inspection Science，Hangzhou 310013； 2. Clinical Laboratory，Chinese Medicine Orthopedic Hospital of Fuyang， Hangzhou 311400； 3. Research Center of Analysis and Measurement， Zhejiang University of Technology， Hangzhou 310014，China）
Abstract: HRTEM, FESEM, FTIR, XRD were employed to characterize the microstructure of biological aragonite in freshwater cultured pearls from Hyriopsis Cumingii shell and study the effect of mechanical treatment on the absorption bands of aragonite. The results show that during the preparation of pearl powders, with the increase of grinding intensity, the frequency of antisymmetric stretching vibration band of aragonite in pearl shows clearly red shift. The out plane bending vibration band shows blue shift. Based on the FTIR study on aragonite heated under different temperatures, the heat energy from the grinding process is accredited to the direct factor resulting in the frequency shift of absorption bands in aragonite. In the initial stage of mechanical treatment, lamellar pearl powders gradually disperse and refine further. With the increase of grinding intensity, the powders refine further but appear re-aggregation due to the high surface energy of active particles.
Keywords: pearl powder; mechanochemical effect; aragonite; frequency shift
中图分类号：Q819 文献标志码：A
文章编号：1008-5548（2014）02-0013-05
DOI:10.13732/j.issn.1008-5548.2014.02.003
收稿日期：2013-07-21，修回日期：2013-08-08，在线出版时间：2014-05-04。
基金项目：国家自然科学基金项目，编号：21173193； 浙江省教育厅项目，编号：Y201225711； 浙江省质量技术监督系统公益科研项目，编号：20110103。
第一作者简介：严俊（1981—），男，博士后，工程师，研究方向为矿物功能材料。 E-mail: yanj_zjut@163.com。
通信作者简介：胡仙超（1981—），男，博士,助理研究员，研究方向为纳米复合功能材料。 E-mail: huxc@zjut.edu.cn。
