欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
采用扫描电镜（SEM）、X射线衍射（XRD）和傅里叶红外光谱（FTIR）研究了凝胶体系中尿抑制剂酒石酸钠（Na2tart）的浓度和结晶温度对草酸钙（CaOxa）晶体生长的影响.当Na2tart浓度为0.01 mol·L^-1时,体系中主要生成棱角尖锐的蔷薇花状一水草酸钙（COM）聚集体,二水草酸钙（COD）含量小于5%,此时XRD图谱上主要为归属于COM的（-101）,（020）和（-202）晶面的衍射峰,FTIR光谱中COM晶体的羧基不对称伸缩振动vas（COO-）和对称伸缩振动vs（COO-）分别为1 618和1 317 cm^-1.当Na2tart浓度增加到0.10和0.50 mol·L^-1时,COD百分含量分别增加至10%和50%,COM晶体的比表面积减小.COD含量增加后,XRD图谱上归属于COD的（200）,（211）,（411）和（213）晶面的衍射峰增强.环境温度的影响比浓度的影响更为显著.高温（＞47℃）有利于COM生成,而低温（＜27℃）有利于Na2tart诱导COD.FTIR光谱中COD的vas（COO-）和vs（COO-）分别为1 647.6和1 327.7 cm^-1.
英文摘要：
Crystallization of calcium oxalate （CaOxa） was investigated in the presence of sodium tartrate （Na2tart） of different concentration in a gel system by scanning electron microscopy （SEM）, X-ray diffraction （XRD） and Fourier transform infrared （FTIR） spectroscopy. It was found that in the presence of a low concentration of Na2tart （0. 01 mol· L^-1）, calcium oxalate monohydrate （COM） is the dominant crystal phase. The percentage of calcium oxalate dihydrate （COD） is less than 5%. In the XRD pattern the main diffraction peaks are （101）, （020）, and （-↑202） planes of COM crystals. In the FTIR spectrum, the main asymmetric carbonyl stretching band vas（COO^-） and the metal-carboxylate stretch vs（COO-） of COM occur at 1 618 and 1 317 cm^-1, respectively. With the concentration of Na2tart increasing to 0.10 and 0. 50 mol · L^-1, the percentage of COD crystals increases to 10% and 50%, respectively, and the surface area of COM crystals decreases. The diffraction peaks that assigned to the （200）, （211）, （411）, and （213） planes of COD crystals become stronger and stronger. The temperature can influence the modulation of Na2tart in terms of the phase composition and morphology of CaOxa crystals. As the temperature decreases, the percentage of COD increases. At a higher temperature beyond 47℃, COM is the dominant phase; but COM is dominant when the temperature is lower than 27℃. The vas （COO^-） and vs （COO^-） of COD crystals occur at 1 647. 6 and 1 327. 7 cm^-1, respectively.
同期刊论文项目
同项目期刊论文
Mechanical properties of skeletal bone in gene-mutated stopsel dtl28d and wild-type zebrafish (Danio
Osteoblasts culture on the biomimetic bone tissue engineering Material: nano-HA/collagen/PLA composi
Controlled and uncontrolled crystallization of calcium oxalate monohydrate in presence of citric aci
Effects of LDL, cholesterol and their oxidized forms on the precipitation kinetics of calcium phosph
铜离子和pH对体外破骨细胞骨吸收功能的影响. 英文版: The effects of copper ion and pH on osteoclastic bone resorption in vitr
稀土离子对体外兔成熟破骨细胞骨吸收功能的影响. 英文版：Effects of the rare earth ions on bone resorbing function of rabbit matu
Effects of carboxyl acids on the crystal growth of calcium oxalate nanoparticles in lecithin-water l
A phenomenon of negative peak appeared in kinetic ultraviolet absorb curve of initial biomineralizat
Alterations in Mineral Properties of Zebrafish Skeletal Bone induced by liliputdtc232 Gene Mutation.
Effects of temperature and sodium carboxylate additives on mineralization of calcium oxalate in sili
Crystallization of calcium oxalate monohydrate at dipalmitoylphosphatidyl- choline monolayers in the
Ability of multifunctional carboxylates to favor crystal growth of calcium oxalate dihydrate and tri
Effect of tartrates with various counterions on the precipitation of calcium oxalate in vesicle solu
Studies on the characteristics of LB films of N, N-dimethylferrocenylmethylhexadecylammonium bromide
Biomimetic Morphogenesis of Calcium Carbonate in the presence of a new Amino-Carboxyl-Chelating-Agen
期刊信息
位置：